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Dušková M. The Effects of Different Types of Diets on Steroid Hormone Concentrations. Physiol Res 2023; 72:S323-S337. [PMID: 38116769 DOI: 10.33549/physiolres.935209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Abstract
The great popularity of various diets in recent years has led us to reflect on their suitability for our health. The aim of this communication is to review current knowledge on the influence of the most well-known diets on the concentrations of the main steroids and to consider possible mechanisms. The influence of diet on hormone concentrations is expected, but the literature data on this topic are inconsistent and yield conflicting results. The main problem in evaluating these influences is the change in weight that a change in diet induces. This effect needs to be filtered out in order to discover interesting associations between diet and steroid hormones. This is illustrated by the example of the effects of ketogenic diets on testosterone levels in men, where the direct effect of the diet is to reduce testosterone levels, but a number of papers have described increases that are due to diet-related weight loss and the modification of obesity-induced changes. A second major driver is the change in circadian rhythm, and it is necessary to assess hormonal changes induced by changing the time of day of the diet. Such shifts within the circadian rhythm rather than due to a particular type of diet itself are documented by changes in the circadian rhythm of cortisol.
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Affiliation(s)
- M Dušková
- Institute of Endocrinology, Prague, Czech Republic
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Masood MA, Khatoon R, Veenstra TD. Quantitative analysis of specific androgens in serum and urine samples from male, pre, and postmenopausal subjects using LC-MRM-MS. Steroids 2022; 185:109060. [PMID: 35690120 DOI: 10.1016/j.steroids.2022.109060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 05/09/2022] [Accepted: 06/02/2022] [Indexed: 10/18/2022]
Abstract
Androgens are endogenous hormones that play a crucial role in the paracrine and intracrine hormone system to perform and maintain vital physiological functions. Altered levels of androgens are implicated in many diseases such as sexual dysregulation, breast cancer, prostate cancer, and heart diseases etc. In this manuscript we describe a liquid chromatography-mass spectrometry (LC-MS) method using multiple reaction monitoring (MRM) for quantitatively measuring specific androgens such as dehydroepiandrosterone, testosterone, androsterone sulphate, androstenedione, and dihydrotestosterone in serum and urine samples. Serum acquired from nine different subjects (three pre-menopausal women, three postmenopausal women, and three healthy males) were used to evaluate the developed methods. In the sample preparation methods for serum either protein precipitation or liquid-liquid extraction (LLE) was used while the analysis of urinary androgens used LLE. The extracted androgens were quantitatively measured using LC-MRM-MS to which known amounts of stable isotope labeled standards were added. This manuscript also presents a LC-MRM-MS method mode for the analysis of oxime derivatized androgens potentially to enhance the sensitivity of the assay if required, from urine and venous-drawn serum samples.
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Affiliation(s)
- M Athar Masood
- Laboratory of Proteomics and Analytical Technologies, Advanced Technology Program, NCI-Frederick, MD 21702-1201, USA.
| | - Rafia Khatoon
- Novavax Inc, 21 Firstfield Rd, Gaithersburg, MD 20878, USA
| | - Timothy D Veenstra
- Present Address: School of Pharmacy, Cedarville University, 251 N Main St, Cedarville, OH 45314, USA
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Obermayer-Pietsch B, de Ramon M, Reichmuth C, Bendig G, Hutzler S, Taibon J, Rank CM, Findeisen P. Multicenter Evaluation of a New, Fully Automated Androstenedione Electrochemiluminescence Immunoassay: Precision Analysis, Method Comparison, and Determination of Reference Ranges. J Appl Lab Med 2021; 7:503-514. [PMID: 34662384 DOI: 10.1093/jalm/jfab107] [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: 02/11/2021] [Accepted: 07/26/2021] [Indexed: 11/12/2022]
Abstract
BACKGROUND Androstenedione (ASD) levels can aid diagnosis of hyperandrogenism together with other clinical/laboratory findings. We evaluated performance of the new, automated Elecsys® ASD assay vs an ASD isotope dilution-liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS) reference measurement procedure and determined reference ranges. METHODS Repeatability/intermediate precision were assessed using 3 control levels and 5 human serum pools (n = 75 each; Clinical and Laboratory Standards Institute EP05-A3). Method comparisons vs commercially available immunoassays [IMMULITE ASD (Siemens) and LIAISON ASD (DiaSorin)] and an ID-LC-MS/MS measurement procedure method were conducted using 421 serum samples; Passing-Bablok regression and Pearson's correlation coefficients were calculated. Reference ranges and distribution of values associated with polycystic ovary syndrome (PCOS) were determined in five clinical cohorts using samples from several sites/vendors. RESULTS Repeatability/intermediate precision coefficients of variation across all sites were 2.01% to 3.91% and 2.43% to 4.30%, respectively (mean ASD: 7.80-34.7 nmol/L). The Elecsys ASD assay showed poor agreement with IMMULITE ASD (slope = 0.459; r = 0.856; n = 320), fair agreement with LIAISON ASD (slope = 0.625; r = 0.984; n = 327), and very good agreement with ID-LC-MS/MS (slope = 1.040; r = 0.996; n = 332). Reference ranges (2.5th-97.5th percentiles) were: children (≤8 years; n = 140), <0.525 to 1.81 nmol/L; males (≥18 years; n = 138), 0.979 to 5.32 nmol/L; and postmenopausal females (n = 140), 0.654 to 3.74 nmol/L. Reference range (5th-95th percentiles) for females with fertile cycle (≥18 years; n = 84) was 1.71 to 4.58 nmol/L. The distribution of values (2.5th-97.5th percentiles) in females with PCOS (n = 125) was 2.26 to 12.1 nmol/L. CONCLUSIONS Elecsys ASD assay demonstrated excellent precision and very good agreement with ID-LC-MS/MS. Reference ranges were established to support results interpretation in routine practice.
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Affiliation(s)
- Barbara Obermayer-Pietsch
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Endocrinology Lab Platform, Medical University of Graz, Graz, Austria
| | - Marta de Ramon
- Clinical Biochemistry, Hormones and Tumor Markers Section, Laboratori de Referència de Catalunya, Barcelona, Spain
| | - Claudia Reichmuth
- Agent from TRIGA-S representing Roche Diagnostics GmbH, Penzberg, Germany
| | | | | | | | | | - Peter Findeisen
- Study Department, MVZ Labor Dr. Limbach & Kollegen, Heidelberg, Germany
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Šimková M, Vítků J, Kolátorová L, Vrbíková J, Vosátková M, Včelák J, Dušková M. Endocrine disruptors, obesity, and cytokines - how relevant are they to PCOS? Physiol Res 2021; 69:S279-S293. [PMID: 33094626 DOI: 10.33549/physiolres.934521] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
As environmental and genetic components contribute to the PCOS expression, we compared levels of endocrine disruptors, steroid hormones, cytokines, and metabolic parameters in twenty healthy, nine normal-weight PCOS women, and ten obese PCOS women. Steroid hormones, bisphenols (BPA, BPS, BPF, BPAF) and parabens (methyl-, ethyl-, propyl-, butyl-, benzyl-parabens) were measured by liquid chromatography-tandem mass spectrometry. Differences between the groups were assessed using the Mann-Whitney U test. Spearman correlation coefficients were calculated for the individual parameters relationship. Significantly higher levels of BPA, anti-Müllerain hormone, lutropine, lutropine/folitropine ratio, testosterone, androstenedione, 7beta-OH-epiandrosterone, and cytokines (IL-6, VEGF, PDGF-bb), were found in normal-weight PCOS women compared to controls. Between normal-weight and obese PCOS women, there were no differences in hormonal, but in metabolic parameters. Obese PCOS women had significantly higher insulin resistance, fatty-liver index, triglycerides, cytokines (IL-2, IL-13, IFN-gamma). In healthy, but not in PCOS, women, there was a positive correlation of BPA with testosterone, SHBG with lutropine, and folitropine, while testosterone negatively correlated with SHBG. In obese women with PCOS, insulin resistance negatively correlated with SHBG and estradiol. No differences were observed in the paraben exposure. Levels of BPA were higher in PCOS women, indicating its role in the etiology. Obesity significantly worsens the symptoms.
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Affiliation(s)
- M Šimková
- Institute of Endocrinology, Prague, Czech Republic. ,
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Jia X, Sun C, Tang O, Gorlov I, Nambi V, Virani SS, Villareal DT, Taffet GE, Yu B, Bressler J, Boerwinkle E, Windham BG, de Lemos JA, Matsushita K, Selvin E, Michos ED, Hoogeveen RC, Ballantyne CM. Plasma Dehydroepiandrosterone Sulfate and Cardiovascular Disease Risk in Older Men and Women. J Clin Endocrinol Metab 2020; 105:dgaa518. [PMID: 32785663 PMCID: PMC7526732 DOI: 10.1210/clinem/dgaa518] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/05/2020] [Indexed: 01/08/2023]
Abstract
CONTEXT Lower dehydroepiandrosterone-sulfate (DHEA-S) levels have been inconsistently associated with coronary heart disease (CHD) and mortality. Data are limited for heart failure (HF) and association between DHEA-S change and events. OBJECTIVE Assess associations between low DHEA-S/DHEA-S change and incident HF hospitalization, CHD, and mortality in older adults. DESIGN DHEA-S was measured in stored plasma from visits 4 (1996-1998) and 5 (2011-2013) of the Atherosclerosis Risk in Communities study. Follow-up for incident events: 18 years for DHEA-S level; 5.5 years for DHEA-S change. SETTING General community. PARTICIPANTS Individuals without prevalent cardiovascular disease (n = 8143, mean age 63 years). MAIN OUTCOME MEASURE Associations between DHEA-S and incident HF hospitalization, CHD, or mortality; associations between 15-year change in DHEA-S (n = 3706) and cardiovascular events. RESULTS DHEA-S below the 15th sex-specific percentile of the study population (men: 55.4 µg/dL; women: 27.4 µg/dL) was associated with increased HF hospitalization (men: hazard ratio [HR] 1.30, 95% confidence interval [CI], 1.07-1.58; women: HR 1.42, 95% CI, 1.13-1.79); DHEA-S below the 25th sex-specific percentile (men: 70.0 µg/dL; women: 37.1 µg/dL) was associated with increased death (men: HR 1.12, 95% CI, 1.01-1.25; women: HR 1.19, 95% CI, 1.03-1.37). In men, but not women, greater percentage decrease in DHEA-S was associated with increased HF hospitalization (HR 1.94, 95% CI, 1.11-3.39). Low DHEA-S and change in DHEA-S were not associated with incident CHD. CONCLUSIONS Low DHEA-S is associated with increased risk for HF and mortality but not CHD. Further investigation is warranted to evaluate mechanisms underlying these associations.
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Affiliation(s)
| | | | - Olive Tang
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | | | - Vijay Nambi
- Baylor College of Medicine, Houston, Texas
- Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
| | - Salim S Virani
- Baylor College of Medicine, Houston, Texas
- Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
| | | | | | - Bing Yu
- University of Texas Health Science Center at Houston, Houston, Texas
| | - Jan Bressler
- University of Texas Health Science Center at Houston, Houston, Texas
| | - Eric Boerwinkle
- University of Texas Health Science Center at Houston, Houston, Texas
| | - B Gwen Windham
- University of Mississippi School of Medicine, Jackson, Mississippi
| | | | | | - Elizabeth Selvin
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Erin D Michos
- Johns Hopkins School of Medicine, Baltimore, Maryland
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DUŠKOVÁ M, KOLÁTOROVÁ L, ŠIMKOVÁ M, ŠRÁMKOVÁ M, MALÍKOVÁ M, HORÁČKOVÁ L, VÍTKŮ J, STÁRKA L. Steroid Diagnostics of 21st Century in the Light of Their New Roles and Analytical Tools. Physiol Res 2020; 69:S193-S203. [DOI: 10.33549/physiolres.934517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The determination of steroid hormones and subsequent interpretation of results is accompanied by a range of difficulties. The amount of information that current technology can provide on the circulating concentrations of more than a hundred various steroid compounds can lead to problems with interpretation. The aim of this study is to help provide orientation in this maze of data on steroid hormones. First we focus on specific aspects arising from the pre-analytical phase of steroid determination that need to be considered when planning sampling, whether for diagnostics or research. Then, we provide a brief summary of the characteristics and diagnostic relevance of several steroid hormones and/or their metabolites: pregnenolone, 17α-hydroxy-pregnenolone, dehydroepiandrosterone, hydroxyderivatives of dehydroepiandrosterone, androstenedione, testosterone, estrone, estradiol, estriol, cortisol, cortisone, which in our institute are determined with validated LC-MS/MS methods. For these steroids, we also provide newly calculated reference values in fertile women according to the phase of their menstrual cycle.
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Affiliation(s)
- M. DUŠKOVÁ
- Institute of Endocrinology, Prague, Czech Republic
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Stárka L, Dušková M, Vítků J. 11-Keto-testosterone and other androgens of adrenal origin. Physiol Res 2020; 69:S187-S192. [PMID: 33094617 DOI: 10.33549/physiolres.934516] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The adrenal glands produce significant amounts of steroid hormones and their metabolites, with various levels of androgenic activities. Until recently, the androgenic potency of these adrenal-derived compounds were not well known, but some recent studies have shown that the production of 11-oxo- and 11beta-hydroxy-derived testosterone and dihydrotestosterone evidently have high androgenic activity. This fact has clinical importance, for instance, in various types of congenital adrenal hyperplasia with androgenization or polycystic ovarian syndrome, and laboratory determinations of these substances could help to better evaluate the total androgen pressure in patients with these disorders. Another area of concern is the treatment of prostate cancer with androgen deprivation, which loses effectiveness after a certain time. The concurrent blocking of the secretion of adrenal C(19)-steroids, whether using corticoids or adrenostatics, could increase the effectiveness of androgen-deprivation therapy.
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Affiliation(s)
- L Stárka
- Institute of Endocrinology, Prague, Czech Republic.
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Abstract
PURPOSE OF REVIEW Adrenarche is the pubertal maturation of the innermost zone of the adrenal cortex, the zona reticularis. The onset of adrenarche occurs between 6 and 8 years of age when dehydroepiandrosterone sulfate (DHEAS) concentrations increase. This review provides an update on adrenal steroidogenesis and the differential diagnosis of premature development of pubic hair. RECENT FINDINGS The complexity of adrenal steroidogenesis has increased with recognition of the alternative 'backdoor pathway' and the 11-oxo-androgens pathways. Traditionally, sulfated steroids such as DHEAS have been considered to be inactive metabolites. Recent data suggest that intracellular sulfated steroids may function as tissue-specific intracrine hormones particularly in the tissues expressing steroid sulfatases such as ovaries, testes, and placenta. SUMMARY The physiologic mechanisms governing the onset of adrenarche remain unclear. To date, no validated regulatory feedback mechanism has been identified for adrenal C19 steroid secretion. Available data indicate that for most children, premature adrenarche is a benign variation of development and a diagnosis of exclusion. Patients with premature adrenarche tend to have higher BMI values. Yet, despite greater knowledge about C19 steroids and zona reticularis function, much remains to be learned about adrenarche.
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Sun S, Jiao M, Han C, Zhang Q, Shi W, Shi J, Li X. Causal Effects of Genetically Determined Metabolites on Risk of Polycystic Ovary Syndrome: A Mendelian Randomization Study. Front Endocrinol (Lausanne) 2020; 11:621. [PMID: 33013699 PMCID: PMC7505923 DOI: 10.3389/fendo.2020.00621] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 07/30/2020] [Indexed: 12/16/2022] Open
Abstract
Background: Polycystic ovary syndrome (PCOS) is a heterogeneous endocrine disorder that is influenced by both genetic and environmental factors. However, the etiology of PCOS remains unclear. Methods: We conducted a two-sample Mendelian randomization (MR) analysis to assess the causal effects of genetically determined metabolites (GDMs) on the risk of PCOS. We used summary level data of a genome-wide association study (GWAS) on 486 metabolites (n = 7,824) as exposure and a PCOS GWAS consisting of 4,138 cases and 20,129 controls as the outcome. Both datasets were obtained from publicly published databases. For each metabolite, a genetic instrumental variable was generated to assess the relationship between the metabolite and PCOS. For MR analysis, we primarily used the standard inverse variance weighted (IVW) method, while three additional methods-the MR-Egger, weighted median, and MR-PRESSO (pleiotropy residual sum and outlier) methods-were performed as sensitivity analyses. Results: Using genetic variants as predictors, we observed a robust relationship between epiandrosterone sulfate (EPIA-S) and PCOS (PIVW = 0.0186, PMR-Egger = 0.0111; PWeighted-median = 0.0154, and PMR-PRESSO = 0.0290). Similarly, 3-dehydrocarnitine, 4-hydroxyhippurate, hexadecanedioate, and β-hydroxyisovalerate may also have causal effects on PCOS development. Conclusions: We identified metabolites that might have causal effects on PCOS development. Our study emphasizes the role of genetic factors underlying the causal relationships between metabolites and PCOS and provides novel insights through the integration of metabolomics and genomics to better understand the mechanisms involved in human disease pathogenesis.
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Affiliation(s)
- Shuliu Sun
- Department of Obstetrics and Gynecology, Northwest Women's and Children's Hospital, Xi'an, China
| | - Minjie Jiao
- Department of Obstetrics and Gynecology, Northwest Women's and Children's Hospital, Xi'an, China
| | - Chengcheng Han
- Department of Obstetrics and Gynecology, Northwest Women's and Children's Hospital, Xi'an, China
| | - Qian Zhang
- Department of Obstetrics and Gynecology, Northwest Women's and Children's Hospital, Xi'an, China
| | - Wenhao Shi
- The Assisted Reproductive Centre, Northwest Women's and Children's Hospital, Xi'an, China
| | - Juanzi Shi
- The Assisted Reproductive Centre, Northwest Women's and Children's Hospital, Xi'an, China
| | - Xiaojuan Li
- Department of Obstetrics and Gynecology, Northwest Women's and Children's Hospital, Xi'an, China
- *Correspondence: Xiaojuan Li
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Hána V, Ježková J, Kosák M, Kršek M, Hána V, Hill M. Novel GC-MS/MS Technique Reveals a Complex Steroid Fingerprint of Subclinical Hypercortisolism in Adrenal Incidentalomas. J Clin Endocrinol Metab 2019; 104:3545-3556. [PMID: 30896752 DOI: 10.1210/jc.2018-01926] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 03/15/2019] [Indexed: 02/02/2023]
Abstract
CONTEXT Improvement of imaging methods has led to more incidental adrenal tumor findings, especially adenomas. Routine hormonal evaluation uses only a few steroids to evaluate possible hormonal hypersecretion of these adenomas, but a wide spectrum of serum steroid hormone changes has not been published. OBJECTIVE To measure the serum levels of 83 steroids from patients with unilateral and bilateral adrenal incidentalomas to uncover full steroid profile changes in patients with subclinical hypercortisolism (SH). DESIGN Cross-sectional study. SETTING The study was conducted at a tertiary inpatient clinic. PATIENTS Fifty-two patients with adrenal incidentalomas (unilateral, n = 29; bilateral, n = 23), including nonfunctioning (n = 11) vs SH (n = 41), and 26 age- and sex-matched controls from the general population were included. MAIN OUTCOME MEASURES Eighty-three serum steroids were measured by gas chromatography-tandem mass spectrometry (GC-MS/MS) before and after 1 mg dexamethasone, ACTH, midnight serum cortisol, and urinary free cortisol/24 hour. RESULTS Of 83 measured steroids, 10 were significantly decreased in patients with SH, including dehydroepiandrosterone sulfate (DHEAS), androsterone sulfate, epiandrosterone sulfate, androstenediol sulfate, conjugated 5α-androstane-3β,17β-diol, and conjugated 5α-androstane-3α,17β-diol. This finding was observed even when unilateral, bilateral, male, and female subgroups were analyzed separately. When we compared routine clinical methods and GC-MS/MS‒measured steroids, the most discriminatory was DHEAS followed by midnight serum cortisol, epiandrosterone sulfate, androsterone sulfate, ACTH, and 16α-hydroxypregnenolone. CONCLUSIONS SH was associated with decreased levels of adrenal androgens, their metabolites, and pregnenolone metabolite. GC-MS/MS is a powerful tool for measuring serum levels of these undescribed changes in steroid metabolism, which are characteristic of SH in adrenal incidentalomas.
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Affiliation(s)
- Václav Hána
- 3rd Department of Internal Medicine, General University Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jana Ježková
- 3rd Department of Internal Medicine, General University Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Mikuláš Kosák
- 3rd Department of Internal Medicine, General University Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Michal Kršek
- 3rd Department of Internal Medicine, General University Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Václav Hána
- 3rd Department of Internal Medicine, General University Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Martin Hill
- Steroid Hormone Unit, Institute of Endocrinology, Prague, Czech Republic
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Adamcová K, Kolátorová L, Škodová T, Šimková M, Pařízek A, Stárka L, Dušková M. Steroid hormone levels in the peripartum period - differences caused by fetal sex and delivery type. Physiol Res 2018; 67:S489-S497. [PMID: 30484675 DOI: 10.33549/physiolres.934019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Progesterone, estrogens, androgens and glucocorticoids all play important roles during pregnancy, from implantation to delivery. Focusing on selected steroid hormones in the peripartum period, we defined reference ranges measured using LS-MS/MS, and assessed relationships with maternal age, pregnancy weight gain, delivery type, and fetal sex. Samples were taken from 142 healthy women with physiological gravidity at the 37th week, during the first period of labor, and from newborn mixed cord blood. We found higher cortisol and 17-OH-pregnenolone plasma levels in mothers at the 37th week that carried male fetuses (p=0.03), but no significant differences in any studied hormones in newborns of different sex. Neither maternal age nor weight gain nor newborn birth weight had any relationships to any of the studied hormones. However, there were differences depending on vaginal versus planned cesarean section deliveries. In women carrying a male fetus we found significantly higher levels of 17-OH-pregnenolone, progesterone, cortisol, corticosterone and significantly lower levels of estradiol in those undergoing spontaneous vaginal delivery. However, we found no significant differences in the cord blood of newborn males from either delivery type. We established reference ranges for our analysis methods, which should be useful for further studies as well as in standard clinical practice.
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Affiliation(s)
- K Adamcová
- Department of Obstetrics and Gynecology of the First Faculty of Medicine and General Teaching Hospital, Prague, Czech Republic, Institute of Endocrinology, Prague, Czech Republic.
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