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Pan JJ, Zhu HT, Chen J, Ma XQ, Wang AJ, Yuan PX, Feng JJ. The dual ECL signal enhancement strategy of Pd nanoparticles attached covalent organic frameworks and exonuclease cycling reaction for the ultrasensitive detection of progesterone. Talanta 2024; 274:125934. [PMID: 38574533 DOI: 10.1016/j.talanta.2024.125934] [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: 02/08/2024] [Revised: 03/11/2024] [Accepted: 03/15/2024] [Indexed: 04/06/2024]
Abstract
Nowadays, novel and efficient signal amplification strategy in electrochemiluminescence (ECL) platform is urgently needed to enhance the sensitivity of biosensor. In this work, the dual ECL signal enhancement strategy was constructed by the interactions of Pd nanoparticles attached covalent organic frameworks (Pd NPs@COFs) with tris (bipyridine) ruthenium (RuP) and Exonuclease III (Exo.III) cycle reaction. Within this strategy, the COFs composite was generated from the covalent reaction between 2-nitro-1,4-phenylenediamine (NPD) and trialdehyde phloroglucinol (Tp), and then animated by glutamate (Glu) to attach the Pd NPs. Next, the "signal on" ECL biosensor was constructed by the coordination assembly of thiolation capture DNA (cDNA) onto the Pd NPs@COFs modified electrode. After the aptamer recognition of progesterone (P4) with hairpin DNA 1 (HP1), the Exo. III cycle reaction was initiated with HP2 to generate free DNA, which hybridized with cDNA to form double-stranded DNA (dsDNA). For that, the RuP was embedded into the groove of dsDNA and achieved the ultrasensitive detection of P4 with a lower limit of detection (LOD) down to 0.45 pM, as well as the excellent selectivity and stability. This work expands the COFs-based materials application in ECL signal amplification and valuable DNA cyclic reaction in biochemical testing field.
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Affiliation(s)
- Jin-Jie Pan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Hao-Tian Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Jun Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Xiao-Qi Ma
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Ai-Jun Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Pei-Xin Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
| | - Jiu-Ju Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
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Kitahara CM, Surcel HM, Falk R, Pfeiffer RM, Männistö T, Gissler M, Trabert B. Early-pregnancy sex steroid and thyroid function hormones, thyroid autoimmunity, and maternal papillary thyroid cancer incidence in the Finnish Maternity Cohort. Int J Cancer 2024. [PMID: 38693841 DOI: 10.1002/ijc.34974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 04/02/2024] [Accepted: 04/09/2024] [Indexed: 05/03/2024]
Abstract
Thyroid cancer more commonly affects women than men and is the third most frequently diagnosed cancer among women of reproductive age. We conducted a nested case-control study within the Finnish Maternity Cohort to evaluate pre-diagnostic sex steroid and thyroid function markers in relation to subsequent maternal papillary thyroid cancer. Cases (n = 605) were women ages 18-44 years, who provided an early-pregnancy (<20 weeks gestation) blood sample and were diagnosed with papillary thyroid cancer up to 11 years afterward. Controls (n = 1185) were matched to cases 2:1 by gestational age, mother's age, and date at blood draw. Odds ratios (ORs) for the associations of serum thyroid peroxidase antibodies (TPO-Ab), thyroglobulin antibodies (Tg-Ab), thyroid stimulating hormone (TSH), free thyroxine (fT4), free triiodothyronine (fT3), progesterone, and estradiol with papillary thyroid cancer were estimated using conditional logistic regression. TPO-Ab and Tg-Ab positivity (>95th percentile among controls) were associated with more than 3-fold (OR = 3.32, 95% confidence interval [CI] 2.33-4.72) and 2-fold (OR = 2.03, 95% CI 1.41-2.93) increased odds of papillary thyroid cancer, respectively. These associations were similar by time since blood draw, parity, gestational age, smoking status, and age and stage at diagnosis. In models excluding TPO-Ab or Tg-Ab positivity, TPO-Ab (quartile 4 vs. 1: OR = 1.66, 95% CI 1.17-2.37, p-trend = .002) and Tg-Ab (quartile 4 vs. 1: OR = 1.74, 95% CI 1.22-2.49, p-trend = .01) levels were positively associated with papillary thyroid cancer. No associations were observed for estradiol, progesterone, TSH, fT3, or fT4 overall. Our results suggest that thyroid autoimmunity in early pregnancy may increase the risk of maternal papillary thyroid cancer.
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Affiliation(s)
- Cari M Kitahara
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, Maryland, USA
| | - Heljä-Marja Surcel
- Faculty of Medicine, University of Oulu, Oulu, Biobank Borealis of Northern Finland, Oulu, Finland
| | - Roni Falk
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, Maryland, USA
| | - Ruth M Pfeiffer
- Biostatistics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, Maryland, USA
| | - Tuija Männistö
- Nordlab, Oulu, Finland and Translational Medicine Research Unit, University of Oulu, Oulu, Finland
| | - Mika Gissler
- Department of Molecular Medicine and Surgery, Finnish Medical Birth Registry, Finnish Institute for Health and Welfare, Helsinki, Finland & Region Stockholm, Academic Primary Health Care Centre, Stockholm, Sweden & Karolinska Institutet, Stockholm, Sweden
| | - Britton Trabert
- Obstetrics and Gynecology Department, University of Utah School of Medicine, Huntsman Cancer Institute at the University of Utah, Salt Lake City, Utah, USA
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Madrigal JM, Troisi R, Surcel HM, Öhman H, Kivelä J, Kiviranta H, Rantakokko P, Koponen J, Medgyesi DN, Kitahara CM, McGlynn KA, Sampson J, Albert PS, Ward MH, Jones RR. Prediagnostic serum concentrations of per- and polyfluoroalkyl substances and risk of papillary thyroid cancer in the Finnish Maternity Cohort. Int J Cancer 2024; 154:979-991. [PMID: 37902275 DOI: 10.1002/ijc.34776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/07/2023] [Accepted: 09/25/2023] [Indexed: 10/31/2023]
Abstract
Human exposure to per- and polyfluoroalkyl substances (PFAS) occurs globally through contaminated food, dust, and drinking water. Studies of PFAS and thyroid cancer have been limited. We conducted a nested case-control study of prediagnostic serum levels of 19 PFAS and papillary thyroid cancer (400 cases, 400 controls) in the Finnish Maternity Cohort (pregnancies 1986-2010; follow-up through 2016), individually matched on sample year and age. We used conditional logistic regression to estimate odds ratios (OR) and 95% confidence intervals (CI) for log2 transformed and categorical exposures, overall and stratified by calendar period, birth cohort, and median age at diagnosis. We adjusted for other PFAS with Spearman correlation rho = 0.3-0.6. Seven PFAS, including perfluoroctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), N-ethyl-perfluorooctane sulfonamidoacetic acid (EtFOSAA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), and perfluorohexane sulfonic acid (PFHxS) were detected in >50% of women. These PFAS were not associated with risk of thyroid cancer, except for PFHxS, which was inversely associated (OR log2 = 0.82, 95% CI: 0.70-0.97). We observed suggestive but imprecise increased risks associated with PFOA, PFOS, and EtFOSAA for those diagnosed at ages <40 years, whereas associations were null or inverse among those diagnosed at 40+ years (P-interaction: .02, .08, .13, respectively). There was little evidence of other interactions. These results show no clear association between PFAS and papillary thyroid cancer risk. Future work would benefit from evaluation of these relationships among those with higher exposure levels and during periods of early development when the thyroid gland may be more susceptible to environmental harms.
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Affiliation(s)
- Jessica M Madrigal
- Occupational & Environmental Epidemiology Branch, Division of Cancer Epidemiology & Genetics (DCEG), National Cancer Institute (NCI), Rockville, Maryland, USA
| | - Rebecca Troisi
- Trans-Divisional Research Program, DCEG, NCI, Rockville, Maryland, USA
| | - Heljä-Marja Surcel
- Biobank Borealis of Northern Finland, Oulu University Hospital, Oulu, Finland
- Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Hanna Öhman
- Biobank Borealis of Northern Finland, Oulu University Hospital, Oulu, Finland
- Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Juha Kivelä
- Biobank Borealis of Northern Finland, Oulu University Hospital, Oulu, Finland
- Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Hannu Kiviranta
- Finnish Institute for Health and Welfare/Environmental Health Unit, Kuopio, Finland
| | - Panu Rantakokko
- Finnish Institute for Health and Welfare/Environmental Health Unit, Kuopio, Finland
| | - Jani Koponen
- Finnish Institute for Health and Welfare/Environmental Health Unit, Kuopio, Finland
| | - Danielle N Medgyesi
- Occupational & Environmental Epidemiology Branch, Division of Cancer Epidemiology & Genetics (DCEG), National Cancer Institute (NCI), Rockville, Maryland, USA
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York, USA
| | - Cari M Kitahara
- Radiation Epidemiology Branch, DCEG, NCI, Rockville, Maryland, USA
| | | | - Joshua Sampson
- Biostatistics Branch, DCEG, NCI, Rockville, Maryland, USA
| | - Paul S Albert
- Biostatistics Branch, DCEG, NCI, Rockville, Maryland, USA
| | - Mary H Ward
- Occupational & Environmental Epidemiology Branch, Division of Cancer Epidemiology & Genetics (DCEG), National Cancer Institute (NCI), Rockville, Maryland, USA
| | - Rena R Jones
- Occupational & Environmental Epidemiology Branch, Division of Cancer Epidemiology & Genetics (DCEG), National Cancer Institute (NCI), Rockville, Maryland, USA
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Nimptsch K, Aydin EE, Chavarria RFR, Janke J, Poy MN, Oxvig C, Steinbrecher A, Pischon T. Pregnancy associated plasma protein-A2 (PAPP-A2) and stanniocalcin-2 (STC2) but not PAPP-A are associated with circulating total IGF-1 in a human adult population. Sci Rep 2024; 14:1770. [PMID: 38245583 PMCID: PMC10799854 DOI: 10.1038/s41598-024-52074-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 01/12/2024] [Indexed: 01/22/2024] Open
Abstract
The pappalysins pregnancy associated plasma protein-A (PAPP-A) and -A2 (PAPP-A2) act as proteinases of insulin-like growth factor-1 (IGF-1) binding proteins, while stanniocalcin-2 (STC2) was identified as a pappalysin inhibitor. While there is some evidence from studies in children and adolescents, it is unclear whether these molecules are related to concentrations of IGF-1 and its binding proteins in adults. We investigated cross-sectionally the association of circulating PAPP-A, PAPP-A2 and STC2 with IGF-1 and its binding proteins (IGFBPs) in 394 adult pretest participants (20-69 years) of the German National Cohort Berlin North study center. Plasma PAPP-A, PAPP-A2, total and free IGF-1, IGFBP-1, IGFBP-2, IGFBP-3, IGFBP-5 and STC2 were measured by ELISAs. The associations of PAPP-A, PAPP-A2 and STC2 with IGF-1 or IGFBPs were investigated using multivariable linear regression analyses adjusting for age, sex, body mass index and pretest phase. We observed significant inverse associations of PAPP-A2 (difference in concentrations per 0.5 ng/mL higher PAPP-A2 levels) with total IGF-1 (- 4.3 ng/mL; 95% CI - 7.0; - 1.6), the IGF-1:IGFBP-3 molar ratio (- 0.34%; 95%-CI - 0.59; - 0.09), but not free IGF-1 and a positive association with IGFBP-2 (11.9 ng/mL; 95% CI 5.0; 18.8). PAPP-A was not related to total or free IGF-1, but positively associated with IGFBP-5. STC2 was inversely related to total IGF-1, IGFBP-2 and IGFBP-3 and positively to IGFBP-1. This first investigation of these associations in a general adult population supports the hypothesis that PAPP-A2 as well as STC2 play a role for IGF-1 and its binding proteins, especially for total IGF-1. The role of PAPP-A2 and STC2 for health and disease in adults warrants further investigation.
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Affiliation(s)
- Katharina Nimptsch
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Straße 10, 13125, Berlin, Germany.
| | - Elif Ece Aydin
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Rafael Francisco Rios Chavarria
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Straße 10, 13125, Berlin, Germany
| | - Jürgen Janke
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Straße 10, 13125, Berlin, Germany
- Biobank Technology Platform, Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
- Core Facility Biobank, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Matthew N Poy
- John Hopkins University, All Children's Hospital, St. Petersburg, FL, USA
| | - Claus Oxvig
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Astrid Steinbrecher
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Straße 10, 13125, Berlin, Germany
| | - Tobias Pischon
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Straße 10, 13125, Berlin, Germany
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Biobank Technology Platform, Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
- Core Facility Biobank, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
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Uldbjerg CS, Sørensen KM, Lindh CH, Rantakokko P, Hauser R, Juul A, Andersson AM, Bräuner EV. Evaporation of serum after long-term biobank storage: A chemical analysis of maternal serum from a large Danish pregnancy screening registry. PLoS One 2023; 18:e0293527. [PMID: 37883412 PMCID: PMC10602309 DOI: 10.1371/journal.pone.0293527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 10/15/2023] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND Relying on freezer stored biospecimens is preferred in epidemiolocal studies exploring environmental pregnancy exposures and later offspring health. Storage duration may increase the pre-analytical variability, potentially adding measurement uncertainty. We investigated evaporation of maternal serum after long-term biobank storage using ions (sodium, Na+; chloride, Cl-) recognized for stability and relatively narrow normal biological reference ranges in human serum. METHODS A chemical analysis study of 275 biobanked second trimester maternal serum from a large Danish pregnancy screening registry. Serum samples were collected between 1985-1995 and stored at -20°C. Ion concentrations were quantified with indirect potentiometry using a Roche Cobas 6000 analyzer and compared according to storage time and normal biological ranges in second trimester. Ion concentrations were also compared with normal biological variation assessed by baseline Na+ and Cl- serum concentrations from a separate cohort of 24,199 non-pregnant women measured before freezing with the same instrument. RESULTS The overall mean ion concentrations in biobanked serum were 147.5 mmol/L for Na+ and 109.7 for Cl-. No marked linear storage effects were observed according to storage time. Ion concentrations were consistently high across sampling years, especially for specific sampling years, and a relatively large proportion were outside respective normal ranges in second trimester: 38.9% for Na+ and 43.6% for Cl-. Some variation in concentrations was also evident in baseline serum used as quality controls. CONCLUSIONS Elevated ion concentrations suggest evaporation, but independent of storage duration in the present study (27-37 years). Any evaporation may have occurred prior to freezer storage or during the first 27 years. Other pre-analytical factors such as low serum volume have likely influenced the concentrations, particularly given the high within year variability. Overall, we consider the biobanked serum samples internally comparable to enable their use in epidemiological studies.
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Affiliation(s)
- Cecilie S. Uldbjerg
- Department of Growth and Reproduction, Copenhagen University Hospital—Rigshospitalet, Copenhagen, Denmark
- International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Denmark
| | | | - Christian H. Lindh
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Panu Rantakokko
- Department of Health Security, Finnish Institute for Health and Welfare, Kuopio, Finland
| | - Russ Hauser
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, United States of America
| | - Anders Juul
- Department of Growth and Reproduction, Copenhagen University Hospital—Rigshospitalet, Copenhagen, Denmark
- International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Anna-Maria Andersson
- Department of Growth and Reproduction, Copenhagen University Hospital—Rigshospitalet, Copenhagen, Denmark
- International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Denmark
| | - Elvira V. Bräuner
- Department of Growth and Reproduction, Copenhagen University Hospital—Rigshospitalet, Copenhagen, Denmark
- International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Denmark
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Svart M, Nielsen MM, Rittig N, Hansen M, Møller N, Gravholt CH. Oral 3-hydroxybuturate ingestion acutely lowers circulating testosterone concentrations in healthy young males. Scand J Med Sci Sports 2023; 33:1976-1983. [PMID: 37377131 DOI: 10.1111/sms.14441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 06/29/2023]
Abstract
Ketone bodies, such as 3-hydroxybutyrate (3-OHB), have been frequently used by endurance athletes, such as cyclists, to enhance performance and recovery and are recognized for their health benefits and therapeutic effects for decades. Testosterone is a potent regulator of red blood cell production. Evidence suggests that ketone bodies can increase the production of erythropoietin, which stimulates red blood cell production. Therefore, we investigated whether an acute increase in 3-OHB levels affects testosterone levels in healthy young men. We studied six healthy, young male participants who fasted overnight and were tested twice: (i) after drinking 37.5 g of Na-D/L-3-OHB dissolved in 500 mL of distilled water (KET), and (ii) after drinking 500 mL of placebo saline water (0.9% NaCl) (CTR). During the KET trial, 3-OHB levels increased to approximately 2.5 mM. Testosterone levels decreased significantly by 20% during KET compared to 3% during CTR. A simultaneous increase in luteinizing hormone was observed in KET. We observed no changes in other adrenal androgens, such as androstenedione and 11-keto androgens. In conclusion, an acute increase in 3-OHB levels decreases testosterone levels. Concomitantly, an increase in luteinizing hormone was observed. This suggests that 3-OHB may counteract some of the beneficial effects of endurance training. Further studies, involving larger sample sizes and performance outcomes, are required to fully understand this phenomenon.
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Affiliation(s)
- Mads Svart
- Department of Endocrinology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
- Steno Diabetes Center Aarhus, Aahus University Hospital, Aarhus N, Denmark
| | - Mette Mølby Nielsen
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus N, Denmark
| | - Nikolaj Rittig
- Department of Endocrinology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
- Steno Diabetes Center Aarhus, Aahus University Hospital, Aarhus N, Denmark
| | - Mette Hansen
- Department of Public Health, Section of Sport Science, Aarhus University, Aarhus N, Denmark
| | - Niels Møller
- Department of Endocrinology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Claus H Gravholt
- Department of Endocrinology, Aarhus University Hospital, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus N, Denmark
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7
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Jensen CZ, Nygaard B, Faber J, Pedersen PL, Larsen MK, Kanters JK, Poulsen HE, Kellogg M, Ellervik C. Long-term stability of thyroid peroxidase antibody (anti-TPO) in serum in the Danish General Suburban Population Study. Clin Chem Lab Med 2023; 61:1590-1596. [PMID: 36971447 DOI: 10.1515/cclm-2022-0845] [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: 08/29/2022] [Accepted: 03/08/2023] [Indexed: 07/20/2023]
Abstract
OBJECTIVES We evaluated the long-term stability of thyroid peroxidase antibody (anti-TPO). METHODS In the Danish General Suburban Population Study (GESUS), serum samples were biobanked at -80 °C during 2010-2013. In a paired design with 70 subjects, we compared anti-TPO (30-198 U/mL) measured on fresh serum on Kryptor Classic in 2010-2011 (anti-TPOfresh) with anti-TPO remeasured on frozen serum (anti-TPOfrozen) on Kryptor Compact Plus in 2022. Both instruments used the same reagents and the anti-TPOn automated immunofluorescent assay, which was calibrated against the international standard NIBSC 66/387, based on the Time Resolved Amplified Cryptate Emission (TRACE) technology from BRAHMS. Values greater than 60 U/mL are regarded as positive in Denmark with this assay. Statistical comparisons included Bland-Altman, Passing-Bablok regression, and Kappa statistic. RESULTS The mean follow-up time was 11.9 years (SD: 0.43). For anti-TPOfrozen vs. anti-TPOfresh, the line of equality was within the confidence interval of the absolute mean difference [5.71 (-0.32; 11.7) U/mL] and the average percentage deviation [+2.22% (-3.89%; +8.34%)]. The average percentage deviation of 2.22% did not exceed analytical variability. Passing-Bablok regression revealed both a statistically significant systematic and proportional difference: Anti-TPOfrozen=-22.6 + 1.22*(anti-TPOfresh). Frozen samples were correctly classified as positive in 64/70 (91.4%; Kappa=71.8%). CONCLUSIONS Anti-TPO serum samples in the range 30-198 U/mL were stable after 12-years of storage at -80 °C with an estimated nonsignificant average percentage deviation of +2.22%. This comparison is based on Kryptor Classic and Kryptor Compact Plus, which used identical assays, reagents, and calibrator, but for which the agreement in the range 30-198 U/mL is unclarified.
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Affiliation(s)
- Christian Z Jensen
- Center for Endocrinology and Metabolism, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
| | - Birte Nygaard
- Center for Endocrinology and Metabolism, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens Faber
- Center for Endocrinology and Metabolism, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Palle L Pedersen
- Department of Clinical Biochemistry, Region Zealand Biobank, Region Zealand University Hospital, Naestved, Denmark
| | - Morten K Larsen
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Hematology, Region Zealand University Hospital, Roskilde, Denmark
| | - Jørgen K Kanters
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Henrik E Poulsen
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department Endocrinology, Copenhagen University Hospital, Bispebjerg Frederiksberg, Denmark
- Department Cardiology, Copenhagen University Hospital, Nordsjællands Hospital Hillerød, Hillerød, Denmark
| | - Mark Kellogg
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Christina Ellervik
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Pathology, Harvard Medical School, Boston, MA, USA
- Department of Data Support, Region Zealand, Sorø, Denmark
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8
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Bilder DA, Worsham W, Sullivan S, Esplin MS, Burghardt P, Fraser A, Bakian AV. Sex-specific and sex-independent steroid-related biomarkers in early second trimester maternal serum associated with autism. Mol Autism 2023; 14:30. [PMID: 37573326 PMCID: PMC10422808 DOI: 10.1186/s13229-023-00562-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 08/01/2023] [Indexed: 08/14/2023] Open
Abstract
BACKGROUND Prenatal exposure to maternal metabolic conditions associated with inflammation and steroid dysregulation has previously been linked to increased autism risk. Steroid-related maternal serum biomarkers have also provided insight into the in utero steroid environment for offspring who develop autism. OBJECTIVE This study examines the link between autism among offspring and early second trimester maternal steroid-related serum biomarkers from pregnancies enriched for prenatal metabolic syndrome (PNMS) exposure. STUDY DESIGN Early second trimester maternal steroid-related serum biomarkers (i.e., estradiol, free testosterone, total testosterone, and sex hormone binding globulin) were compared between pregnancies corresponding to offspring with (N = 68) and without (N = 68) autism. Multiple logistic regression analyses were stratified by sex and gestational duration. One-way ANCOVA with post hoc tests was performed for groups defined by autism status and PNMS exposure. RESULTS Increased estradiol was significantly associated with autism only in males (AOR = 1.13 per 100 pg/ml, 95% CI 1.01-1.27, p = 0.036) and only term pregnancies (AOR = 1.17 per 100 pg/ml, 95% CI 1.04-1.32, p = 0.010). Autism status was significantly associated with decreased sex hormone binding globulin (AOR = 0.65 per 50 nmol/L, 95% CI 0.55-0.78, p < 0.001) overall and when stratified by sex and term pregnancy status. The inverse association between sex hormone binding globulin and autism was independent of PNMS exposure. LIMITATIONS The relative racial and ethnic homogeneity of Utah's population limits the generalizability of study results. Although significant differences by autism status were identified in concentrations of sex hormone binding globulin overall and of estradiol in participant subgroups, differences by PNMS exposure failed to reach statistical significance, which may reflect insufficient statistical power. CONCLUSION Both elevated maternal serum estradiol in males only and low maternal serum sex hormone binding globulin in both sexes are associated with increased autism risk. Further investigation is merited to identify how steroid, metabolic, and inflammatory processes can interact to influence neurodevelopment in early second trimester.
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Affiliation(s)
- Deborah A Bilder
- University of Utah Huntsman Mental Health Institute, 383 Colorow Drive, Room 360, Salt Lake City, UT, 84108, USA.
| | - Whitney Worsham
- University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - M Sean Esplin
- University of Utah School of Medicine, Salt Lake City, UT, USA
- Intermountain Healthcare, Salt Lake City, UT, USA
| | | | - Alison Fraser
- University of Utah Huntsman Cancer Institute, Salt Lake City, UT, USA
| | - Amanda V Bakian
- University of Utah Huntsman Mental Health Institute, 383 Colorow Drive, Room 360, Salt Lake City, UT, 84108, USA
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9
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Dykgraaf RHM, Schalekamp-Timmermans S, Adank MC, van den Berg SAA, van de Lang-Born BMN, Korevaar TIM, Kumar A, Kalra B, Savjani GV, Steegers EAP, Louwers YV, Laven JSE. Reference ranges of anti-Müllerian hormone and interaction with placental biomarkers in early pregnancy: the Generation R Study, a population-based prospective cohort study. Endocr Connect 2023; 12:e220320. [PMID: 36524811 PMCID: PMC9986396 DOI: 10.1530/ec-22-0320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
Objective The primary objective of this study is to establish maternal reference values of anti-Müllerian hormone (AMH) in a fertile multi-ethnic urban pregnant population and to evaluate the effect of gestational age. The secondary objective of this study is to explore the association between AMH and placental biomarkers. Design This study was embedded in the Generation R Study, an ongoing population-based prospective cohort study from early pregnancy onwards. Setting City of Rotterdam, the Netherlands, out of hospital setting. Patients In 5806 women, serum AMH levels were determined in early pregnancy (median 13.5 weeks; 95% range 10.5-17.2). Intervention(s) None. Main outcome measures Maternal AMH levels in early pregnancy and its association with placental biomarkers, including human chorionic gonadotrophin (hCG), soluble fms-like tyrosine kinase-1 (sFLT), and placental growth factor (PLGF). Results A nomogram of AMH in early pregnancy was developed. Serum AMH levels showed a decline with advancing gestational age. Higher AMH levels were associated with a higher level of the placental biomarkers hCG and sFLT in early pregnancy. This last association was predominantly mediated by hCG. AMH levels were negatively associated with PLGF levels. Conclusion In this large study, we show that AMH levels in early pregnancy decrease with advancing gestational age. The association between AMH and the placental biomarkers hCG, sFLT, and PLGF suggests a better placental development with lower vascular resistance in mothers with higher AMH levels. Hence, AMH might be useful in predicting adverse pregnancy outcomes due to impaired placental development.
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Affiliation(s)
- R H M Dykgraaf
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - S Schalekamp-Timmermans
- Division of Obstetrics and Fetal Medicine, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - M C Adank
- Division of Obstetrics and Fetal Medicine, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - S A A van den Berg
- Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Internal Medicine, Academic Center for Thyroid Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - B M N van de Lang-Born
- Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Internal Medicine, Academic Center for Thyroid Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - T I M Korevaar
- Department of Internal Medicine, Academic Center for Thyroid Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - A Kumar
- Ansh Labs, Webster, Texas, USA
| | - B Kalra
- Ansh Labs, Webster, Texas, USA
| | | | - E A P Steegers
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Division of Obstetrics and Fetal Medicine, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Y V Louwers
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - J S E Laven
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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10
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Rerat S, Amsellem-Jager J, L'hour MC, Bouhours-Nouet N, Donzeau A, Rouleau S, Levaillant L, Emeriau F, Moal V, Boux de Casson F, Lahlou N, Coutant R. Lower Circulating Sertoli and Leydig Cell Hormone Levels During Puberty in Obese Boys: A Cross-sectional Study. J Clin Endocrinol Metab 2022; 107:e1568-e1576. [PMID: 34918072 DOI: 10.1210/clinem/dgab845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Alterations in semen characteristics and circulating Sertoli and Leydig cell hormones have been described in obese male adults. Whether hormonal alterations occur before adulthood has not been fully evaluated. OBJECTIVE We describe circulating Sertoli and Leydig cell hormone levels in overweight-obese (ow/ob) boys through childhood and adolescence in a cross-sectional study. METHODS Monocentric study in the Pediatric Endocrinology Unit of Angers University Hospital. Three hundred and fifty-one obese and overweight boys aged 5-19 years underwent physical examination, dual-energy X-ray absorptiometry for body composition, oral glucose tolerance test on insulin and glucose, and measurements of follicle-stimulating hormone, luteinizing hormone, anti-Müllerian hormone (AMH), inhibin B, testosterone, and estradiol. Hormonal levels were compared with normative data obtained from 652 healthy nonoverweight nonobese boys of similar age or Tanner stage. RESULTS Median inhibin B and testosterone levels during puberty were significantly lower in ow/ob than in healthy boys (1) from age >12 years and thereafter for inhibin B, and (2) from age >14 years and thereafter for testosterone. At Tanner stages 4 and 5, 26%, 31%, and 18% of inhibin B, testosterone, and AMH values were below the 5th percentile in ow/ob subjects (P < .01). In multiple regression analyses, estradiol and total bone mineral density Z-score were negative predictors of inhibin B, fat mass percentage was a negative predictor of testosterone, and insulin was a negative predictor of AMH. CONCLUSION Lower Sertoli and Leydig cell hormone levels during puberty were observed in the ow/ob boys.
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Affiliation(s)
- Solene Rerat
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
| | - Jessica Amsellem-Jager
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
- Reference Center for Rare Pituitary Diseases, University Hospital, 49000 Angers, France
| | | | - Natacha Bouhours-Nouet
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
- Reference Center for Rare Pituitary Diseases, University Hospital, 49000 Angers, France
| | - Aurelie Donzeau
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
| | - Stephanie Rouleau
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
| | - Lucie Levaillant
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
| | - Fabienne Emeriau
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
| | - Valerie Moal
- Department of Hormonology, University Hospital, 49000 Angers, France
| | | | - Najiba Lahlou
- Department of Hormonology, BPR Specialized Analyses, 45700 Pannes,France
| | - Regis Coutant
- Department of Pediatric Endocrinology, University Hospital, 49000 Angers, France
- Reference Center for Rare Pituitary Diseases, University Hospital, 49000 Angers, France
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11
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Development and validation of an LC-MS/MS assay for the quantification of allopregnanolone and its progesterone-derived isomers, precursors, and cortisol/cortisone in pregnancy. Anal Bioanal Chem 2021; 413:5427-5438. [PMID: 34279681 DOI: 10.1007/s00216-021-03523-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/22/2021] [Accepted: 06/30/2021] [Indexed: 10/20/2022]
Abstract
Neuroactive steroids are potent neuromodulators that play a critical role in both maternal and fetal health during pregnancy. These stress-responsive compounds are reportedly low in women with perinatal depression and may be associated with poor pregnancy outcomes in animal models. Chronic stress is a risk factor for adverse birth outcomes. Simultaneous quantification of neuroactive steroids, in combination with stress hormones cortisol/cortisone, provides an opportunity to investigate the synergistic relationship of these analytes within the convenience of one assay. A simple, reliable, and sensitive method for quantifying these endogenous compounds is necessary for further research with the potential to advance clinical diagnostic tools during pregnancy. Analytes were extracted from serum with a simple protein precipitation using methanol and then separated and quantified using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). After online extraction, analytes were separated using an Agilent Poroschell 120, 50 × 4.6 mm, 2.7 μm particle size, EC-C18 analytical column. The reliable quantification range was from 0.78 to 1000 ng/mL. QC sample inter- and intraday trueness was between 90 and 110% while inter- and intraday imprecision was less than 10%. Extracted samples were stable up to 7 days at 4 °C and extraction recovery was above 95%. Serum samples from 54 women in pregnancy were analyzed using this method. Here, we provide a validated, fast, and specific assay with sufficient sensitivity that allows for simultaneous quantification of blood serum concentrations of allopregnanolone (3α-hydroxy-5α-pregnan-20-one), pregnanolone (3α-hydroxy-5β-pregnan-20-one), epipregnanolone (3β-hydroxy-5β-pregnan-20-one), pregnenolone, progesterone, cortisol, and cortisone in pregnancy for clinical study samples and clinical diagnostics.
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12
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Devick IF, Hendrickson DA. Effects of Leaving Amputated Ovaries Intra-Abdominally during Elective Bilateral Standing Laparoscopic Ovariectomy in Equids. Animals (Basel) 2021; 11:ani11010232. [PMID: 33477730 PMCID: PMC7832334 DOI: 10.3390/ani11010232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/11/2021] [Accepted: 01/13/2021] [Indexed: 12/02/2022] Open
Abstract
Simple Summary When removing the ovaries of a mare via laparoscopic technique, there is potential to drop the ovary in the abdomen when trying to exteriorize it through the abdominal wall. If the ovary can no longer be seen with the laparoscope, then the procedure is converted to a flank incision and the ovary is identified and removed by hand. Having to convert the procedure negates the benefits of the minimal invasive laparoscopic procedure and increases the risk of post-operative complications. The objective of this study was to identify if amputated ovaries left in the abdomen during surgery would atrophy or if they would regain a blood supply and produce hormones. After surgery, the mare’s hormone values were at low levels and an improvement in all mare’s behavior and general herd dynamics was observed. While this study does not encourage to leave ovaries in the abdomen after amputation, we report no complications related to their voluntary release into the abdomen. Abstract There is risk of dropping an amputated ovary within the abdomen during standing laparoscopic ovariectomies in mares. If the ovary can no longer be directly visualized with the laparoscope, the procedure is then converted to a flank laparotomy for manual retrieval of the ovary which negates the minimally invasive nature of the laparoscopic procedure. The objective was to identify if ovaries left in the abdomen after amputation would atrophy or if they re-vascularize. Standing bilateral ovariectomies were performed in mature mares, but after transection of the ovarian pedicle, the ovaries were intentionally dropped and left within the abdomen. Post-operative endocrine values were at basal levels and an improvement in all mare’s behavior and general herd dynamics was observed. While this study does not encourage to leave ovaries in the abdomen after amputation, we report no complication related to their voluntary release into the abdomen.
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13
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Petrick JL, Florio AA, Zhang X, Zeleniuch-Jacquotte A, Wactawski-Wende J, Van Den Eeden SK, Stanczyk FZ, Simon TG, Sinha R, Sesso HD, Schairer C, Rosenberg L, Rohan TE, Purdue MP, Palmer JR, Linet MS, Liao LM, Lee IM, Koshiol J, Kitahara CM, Kirsh VA, Hofmann JN, Guillemette C, Graubard BI, Giovannucci E, Gaziano JM, Gapster SM, Freedman ND, Engel LS, Chong DQ, Chen Y, Chan AT, Caron P, Buring JE, Bradwin G, Beane Freeman LE, Campbell PT, McGlynn KA. Associations Between Prediagnostic Concentrations of Circulating Sex Steroid Hormones and Liver Cancer Among Postmenopausal Women. Hepatology 2020; 72:535-547. [PMID: 31808181 PMCID: PMC7391790 DOI: 10.1002/hep.31057] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS In almost all countries, incidence rates of liver cancer (LC) are 100%-200% higher in males than in females. However, this difference is predominantly driven by hepatocellular carcinoma (HCC), which accounts for 75% of LC cases. Intrahepatic cholangiocarcinoma (ICC) accounts for 12% of cases and has rates only 30% higher in males. Hormones are hypothesized to underlie observed sex differences. We investigated whether prediagnostic circulating hormone and sex hormone binding globulin (SHBG) levels were associated with LC risk, overall and by histology, by leveraging resources from five prospective cohorts. APPROACH AND RESULTS Seven sex steroid hormones and SHBG were quantitated using gas chromatography/tandem mass spectrometry and competitive electrochemiluminescence immunoassay, respectively, from baseline serum/plasma samples of 191 postmenopausal female LC cases (HCC, n = 83; ICC, n = 56) and 426 controls, matched on sex, cohort, age, race/ethnicity, and blood collection date. Odds ratios (ORs) and 95% confidence intervals (CIs) for associations between a one-unit increase in log2 hormone value (approximate doubling of circulating concentration) and LC were calculated using multivariable-adjusted conditional logistic regression. A doubling in the concentration of 4-androstenedione (4-dione) was associated with a 50% decreased LC risk (OR = 0.50; 95% CI = 0.30-0.82), whereas SHBG was associated with a 31% increased risk (OR = 1.31; 95% CI = 1.05-1.63). Examining histology, a doubling of estradiol was associated with a 40% increased risk of ICC (OR = 1.40; 95% CI = 1.05-1.89), but not HCC (OR = 1.12; 95% CI = 0.81-1.54). CONCLUSIONS This study provides evidence that higher levels of 4-dione may be associated with lower, and SHBG with higher, LC risk in women. However, this study does not support the hypothesis that higher estrogen levels decrease LC risk. Indeed, estradiol may be associated with an increased ICC risk.
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Affiliation(s)
- Jessica L. Petrick
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD,,Slone Epidemiology Center, Boston University, Boston, MA
| | - Andrea A. Florio
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Xuehong Zhang
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Anne Zeleniuch-Jacquotte
- Department of Population Health, New York University School of Medicine, New York, NY,,NYU Perlmutter Cancer Center, New York University School of Medicine, New York, NY
| | - Jean Wactawski-Wende
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY
| | | | - Frank Z. Stanczyk
- Departments of Obstetrics and Gynecology and Preventive Medicine, University of Southern California Keck School of Medicine, Los Angeles, CA
| | - Tracey G. Simon
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Rashmi Sinha
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Howard D. Sesso
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,,Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Catherine Schairer
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Lynn Rosenberg
- Slone Epidemiology Center, Boston University, Boston, MA
| | - Thomas E. Rohan
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, Bronx, NY
| | - Mark P. Purdue
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | | | - Martha S. Linet
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Linda M. Liao
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - I-Min Lee
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,,Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Jill Koshiol
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Cari M. Kitahara
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Victoria A. Kirsh
- Epidemiology Division, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Jonathan N. Hofmann
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Chantal Guillemette
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec - (CHU de Québec) Research Center - Université Laval and Faculty of Pharmacy, Laval University, Québec, Canada
| | - Barry I. Graubard
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Edward Giovannucci
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - J. Michael Gaziano
- Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA,,VA Boston Healthcare System, Boston, MA
| | - Susan M. Gapster
- Epidemiology Research Program, American Cancer Society, Atlanta, GA
| | - Neal D. Freedman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Lawrence S. Engel
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC
| | - Dawn Q. Chong
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - Yu Chen
- Department of Population Health, New York University School of Medicine, New York, NY,,Department of Environmental Medicine, New York University School of Medicine, New York, NY
| | - Andrew T. Chan
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA,,Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA,,Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA
| | - Patrick Caron
- Pharmacogenomics Laboratory, Centre Hospitalier Universitaire de Québec - (CHU de Québec) Research Center - Université Laval and Faculty of Pharmacy, Laval University, Québec, Canada
| | - Julie E. Buring
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,,Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Gary Bradwin
- Clinical and Epidemiologic Research Laboratory, Department of Laboratory Medicine, Boston Children’s Hospital, Boston, MA
| | | | | | - Katherine A. McGlynn
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
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14
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Ulmer CZ, Koelmel JP, Jones CM, Garrett TJ, Aristizabal-Henao JJ, Vesper HW, Bowden JA. A Review of Efforts to Improve Lipid Stability during Sample Preparation and Standardization Efforts to Ensure Accuracy in the Reporting of Lipid Measurements. Lipids 2020; 56:3-16. [PMID: 32519378 DOI: 10.1002/lipd.12263] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 05/03/2020] [Accepted: 05/19/2020] [Indexed: 11/07/2022]
Abstract
Lipidomics is a rapidly growing field, fueled by developments in analytical instrumentation and bioinformatics. To date, most researchers and industries have employed their own lipidomics workflows without a consensus on best practices. Without a community-wide consensus on best practices for the prevention of lipid degradation and transformations through sample collection and analysis, it is difficult to assess the quality of lipidomics data and hence trust results. Clinical studies often rely on samples being stored for weeks or months until they are analyzed, but inappropriate sampling techniques, storage temperatures, and analytical protocols can result in the degradation of complex lipids and the generation of oxidized or hydrolyzed metabolite artifacts. While best practices for lipid stability are sample dependent, it is generally recommended that strategies during sample preparation capable of quenching enzymatic activity and preventing oxidation should be considered. In addition, after sample preparation, lipid extracts should be stored in organic solvents with antioxidants at -20 °C or lower in an airtight container without exposure to light or oxygen. This will reduce or eliminate sublimation, and chemically and physically induced molecular transformations such as oxidation, enzymatic transformation, and photon/heat-induced degradation. This review explores the available literature on lipid stability, with a particular focus on human health and/or clinical lipidomic applications. Specifically, this includes a description of known mechanisms of lipid degradation, strategies, and considerations for lipid storage, as well as current efforts for standardization and quality insurance of protocols.
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Affiliation(s)
- Candice Z Ulmer
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, MS F25, Atlanta, GA, 30341, USA
| | - Jeremy P Koelmel
- Department of Environmental Health Sciences, Yale School of Medicine, Yale University, 60 College Street, Room 510, New Haven, CT, 06520, USA
| | - Christina M Jones
- Chemical Sciences Division, Organic Chemical Metrology Group, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA
| | - Timothy J Garrett
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Juan J Aristizabal-Henao
- Center for Environmental and Human Toxicology & Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, USA
| | - Hubert W Vesper
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, MS F25, Atlanta, GA, 30341, USA
| | - John A Bowden
- Center for Environmental and Human Toxicology & Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, USA
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15
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Troisi GM, Barton SJ, Liori O, Nyman M. Polychlorinated Biphenyls (PCBs) and Sex Hormone Concentrations in Ringed and Grey Seals: A Possible Link to Endocrine Disruption? ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 78:513-524. [PMID: 32107597 PMCID: PMC7136188 DOI: 10.1007/s00244-020-00716-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 01/31/2020] [Indexed: 05/28/2023]
Abstract
Polychlorinated biphenyls (PCBs) are recognised reproductive and immune system toxicants in marine mammals mediated by endocrine-disrupting mechanisms. As with other predators, seals are exposed to elevated bioaccumulated concentrations of PCBs and other persistent organic pollutants (POPs). Cryopreserved plasma samples from adult ringed (Phoca hispida; n = 39) and grey (Halichoerus grypus; n = 38) seals, sampled between 1998 and 2002 from Baltic Sea, Svalbard, and Sable Island (Canada) were used to investigate relationships between PCB exposure and sex hormone concentrations (progesterone; P4, 17α-hydroxy progesterone; 17α-OH-P4, testosterone; T4, 17β-estradiol; E2, estrone; E3). Immunoassay methods were used for quantification of analytes due to the limited sample volumes available. PCB concentrations were found to be significantly higher in Baltic seals than other sampling locations and were classed as "Exposed" seals while Svalbard and Sable Is seal were classed "Reference" seals (sexes and species separate). Mean hormone concentrations in Exposed seal were lower than Reference seals, and this was statistically significantly for 17α-OH-P4 (both sexes and both species), E2 (ringed and grey seal females), and E3 (grey seal females). Regression analyses (PCB v hormone concentrations) for each sex and species revealed significant correlations for P4 (Sable Is. female grey seals and female ringed seals), 17α-OH-P4 (Sable Is. male grey seals and Svalbard male ringed seals), T4 (Svalbard male ringed seals), E2 (female ringed seals), and E3 (female ringed seals and Baltic female grey seals). Although significant correlations are not evidence of cause and effect, the potential impact of hormone changes on endocrine homeostasis and reproductive health for seal populations warrants further investigation given that PCB concentrations found here are in the same range as those currently reported in seals from these populations.
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Affiliation(s)
- G M Troisi
- Department of Mechanical & Aerospace Engineering and Institute for Environment, Health & Societies, College of Engineering, Design and Physical Sciences, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK.
| | - S J Barton
- Department of Chemical and Pharmaceutical Sciences, Kingston University, Penrhyn Road, Kingston-upon-Thames, Surrey, KT1 2EE, UK
| | - O Liori
- Department of Chemical and Pharmaceutical Sciences, Kingston University, Penrhyn Road, Kingston-upon-Thames, Surrey, KT1 2EE, UK
| | - M Nyman
- Finnish Game and Fisheries Research Institute, Metsähallitus, Kirjaamo, P.O. Box 94, Vantaainland, 01301, Finland
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16
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Handelsman DJ, Desai R, Seibel MJ, Le Couteur DG, Cumming RG. Circulating Sex Steroid Measurements of Men by Mass Spectrometry Are Highly Reproducible after Prolonged Frozen Storage. J Steroid Biochem Mol Biol 2020; 197:105528. [PMID: 31712118 DOI: 10.1016/j.jsbmb.2019.105528] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/04/2019] [Accepted: 11/04/2019] [Indexed: 01/10/2023]
Abstract
Long-term studies investigating hormone-dependent cancers and reproductive health often require prolonged frozen storage of serum which assumes that the steroid molecules and measurements are stable over that time. Previous studies of reproducibility of circulating steroids have relied upon flawed historical rather than contemporaneous controls. We measured serum testosterone (T), dihydrotestosterone (DHT), estradiol (E2) and estrone (E1) in 150 randomly selected serum samples by liquid chromatography-mass spectrometry (LC-MS) from men 70 years or older (mean age 77 years) in the CHAMP study. The original measurements in 2009 were repeated 10 years later using the identical serum aliquot (having undergone 2-4 freeze-thaw cycles in the interim) in 2019 together with another never-thawed aliquot of the same serum sample. The results of all three sets of measurements were evaluated by Passing-Bablok regression and Bland-Altman difference analysis. Serum androgens (T, DHT) and estrogens (E2, E1) measured by LC-MS display excellent reproducibility when stored for 10 years at -80 C without thawing. Serum T and DHT displayed high level of reproducibility across all three sets of measurements. Multiple freeze-thaw cycles over those storage conditions do not significantly affect serum T, DHT and E1 concentrations but produce a modest increase (21%) in serum E2 measurements.
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Affiliation(s)
- D J Handelsman
- Andrology Laboratory, ANZAC Research Institute, University of Sydney, Australia.
| | - R Desai
- Andrology Laboratory, ANZAC Research Institute, University of Sydney, Australia
| | - M J Seibel
- Andrology Laboratory, ANZAC Research Institute, University of Sydney, Australia
| | - D G Le Couteur
- Andrology Laboratory, ANZAC Research Institute, University of Sydney, Australia
| | - R G Cumming
- Andrology Laboratory, ANZAC Research Institute, University of Sydney, Australia
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Devick IF, Leise BS, McCue PM, Rao S, Hendrickson DA. Ovarian histopathology, pre- and post-operative endocrinological analysis and behavior alterations in 27 mares undergoing bilateral standing laparoscopic ovariectomy. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2020; 61:181-186. [PMID: 32020939 PMCID: PMC6973214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Determining if ovariectomy will abolish unwanted behaviors can be challenging in mares without ultrasonographic ovarian abnormalities and/or endocrine values not consistent with a granulosa cell tumor. The objective of the study was to identify mares that have a positive improvement in unwanted behaviors after elective standing laparoscopic ovariectomy and to determine if the change is associated with any pre- and post-operative endocrine profiles and/or with ovarian histological findings. During the study period 27 mares underwent a bilateral standing laparoscopic ovariectomy. Pre- and post-operative questionnaires and endocrine profiles, along with ovarian histopathology were performed and data were analyzed. Eighty-nine percent of clients were satisfied with the change in behavior after surgery. There were no significant associations between specific elevated hormones or absent luteal tissue with any specific unwanted behaviors. Pre-operative endocrine values were not predictive of post-operative owner satisfaction but bilateral ovariectomy for the treatment of unwanted behaviors in mares had a high likelihood of achieving owner satisfaction.
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Affiliation(s)
- Ian F Devick
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, USA (Devick, McCue, Rao, Hendrickson); Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, Louisiana, USA (Leise)
| | - Britta S Leise
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, USA (Devick, McCue, Rao, Hendrickson); Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, Louisiana, USA (Leise)
| | - Patrick M McCue
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, USA (Devick, McCue, Rao, Hendrickson); Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, Louisiana, USA (Leise)
| | - Sangeeta Rao
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, USA (Devick, McCue, Rao, Hendrickson); Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, Louisiana, USA (Leise)
| | - Dean A Hendrickson
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, USA (Devick, McCue, Rao, Hendrickson); Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, Louisiana, USA (Leise)
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Bilder DA, Esplin MS, Coon H, Burghardt P, Clark EAS, Fraser A, Smith KR, Worsham W, Chappelle K, Rayner T, Bakian AV. Early Second Trimester Maternal Serum Steroid-Related Biomarkers Associated with Autism Spectrum Disorder. J Autism Dev Disord 2020; 49:4572-4583. [PMID: 31410696 DOI: 10.1007/s10803-019-04162-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Epidemiologic studies link increased autism spectrum disorder (ASD) risk to obstetrical conditions associated with inflammation and steroid dysregulation, referred to as prenatal metabolic syndrome (PNMS). This pilot study measured steroid-related biomarkers in early second trimester maternal serum collected during the first and second trimester evaluation of risk study. ASD case and PNMS exposure status of index offspring were determined through linkage with autism registries and birth certificate records. ASD case (N = 53) and control (N = 19) groups were enriched for PNMS exposure. Higher estradiol and lower sex hormone binding globulin (SHBG) were significantly associated with increased ASD risk. Study findings provide preliminary evidence to link greater placental estradiol activity with ASD and support future investigations of the prenatal steroid environment in ASD.
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Affiliation(s)
- Deborah A Bilder
- University of Utah, Salt Lake City, UT, 84108, USA. .,Utah Autism Research Program, University of Utah, 650 Komas Drive, Suite 206, Salt Lake City, UT, 84108, USA.
| | - M Sean Esplin
- University of Utah, Salt Lake City, UT, 84108, USA.,Intermountain Healthcare, Salt Lake City, UT, USA
| | - Hilary Coon
- University of Utah, Salt Lake City, UT, 84108, USA
| | | | | | - Alison Fraser
- University of Utah, Salt Lake City, UT, 84108, USA.,Huntsman Cancer Institute, Salt Lake City, UT, USA
| | - Ken R Smith
- University of Utah, Salt Lake City, UT, 84108, USA.,Huntsman Cancer Institute, Salt Lake City, UT, USA
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Forsse D, Tangen IL, Fasmer KE, Halle MK, Viste K, Almås B, Bertelsen BE, Trovik J, Haldorsen IS, Krakstad C. Blood steroid levels predict survival in endometrial cancer and reflect tumor estrogen signaling. Gynecol Oncol 2019; 156:400-406. [PMID: 31813586 DOI: 10.1016/j.ygyno.2019.11.123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/28/2019] [Accepted: 11/29/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Blood-based biomarkers are attractive due to ease of sampling and standardized measurement technology, reducing obstacles to clinical implementation. The objective of this study was to evaluate a clinically available method of steroid hormone measurement for its prognostic potential in endometrial cancer. METHODS We quantified seven steroid hormones by liquid chromatography-tandem mass spectrometry in 100 endometrial cancer patients from a prospective cohort. Abdominal fat distribution was assessed from abdominal computed tomography (CT) scans. Steroid hormone levels were compared to clinical characteristics, fat distribution and gene expression in primary tumor samples. RESULTS Low levels of 17OH-progesterone, 11-deoxycortisol and androstenedione were associated with aggressive tumor characteristics and poor disease specific survival (p = .003, p = .001 and p = .02 respectively). Adjusting for preoperative risk based on histological type and grade, low 17OH-progesterone and 11-deoxycortisol independently predicted poor outcome with hazard ratios of 2.69 (p = .033, 95%CI: 1.09-6.68) and 3.40 (p = .020, 1.21-9.51), respectively. Tumors from patients with low steroid level displayed increased expression of genes related to mitosis and cell cycle progression, whereas high steroid level was associated with upregulated estrogen signaling and genes associated with inflammation. Estrone and estradiol correlated to abdominal fat volume in all compartments (total, visceral, subcutaneous, p < .001 for all), but not to the visceral fat proportion. Patients with higher levels of circulating estrogens had increased expression of estrogen signaling related genes. CONCLUSION Low levels of certain endogenous steroids are associated with aggressive tumor traits and poor survival and may provide preoperative information independent of histological biomarkers already in use.
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Affiliation(s)
- D Forsse
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - I L Tangen
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - K E Fasmer
- Mohn Medical Imaging and Visualization Centre, Department of Radiology, Haukeland University Hospital, Bergen, Norway; Section for Radiology, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - M K Halle
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - K Viste
- The Hormone Laboratory, Haukeland University Hospital, Bergen, Norway
| | - B Almås
- The Hormone Laboratory, Haukeland University Hospital, Bergen, Norway
| | - B-E Bertelsen
- The Hormone Laboratory, Haukeland University Hospital, Bergen, Norway
| | - J Trovik
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - I S Haldorsen
- Mohn Medical Imaging and Visualization Centre, Department of Radiology, Haukeland University Hospital, Bergen, Norway; Section for Radiology, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - C Krakstad
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Bergen, Norway.
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Low Serum IGF-1 in Boys with Recent Onset of Juvenile Idiopathic Arthritis. J Immunol Res 2018; 2018:3856897. [PMID: 30622975 PMCID: PMC6304197 DOI: 10.1155/2018/3856897] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 09/17/2018] [Indexed: 01/26/2023] Open
Abstract
Background Liver-derived insulin-like growth factor-1 (IGF-1) contributes bone formation. Decreased IGF-1 levels are common in juvenile idiopathic arthritis (JIA), but whether IGF-1 is related to sex and differ during the pathogenic progress of JIA is unknown. Objective The aim of this study was to examine IGF-1 levels in boys and girls with newly diagnosed JIA, with established JIA and in controls. Methods The study group included 131 patients from the Estonian population-based prevalence JIA study. Blood samples were obtained from 27 boys and 38 girls with early JIA (≤1 month from the diagnosis), 29 boys and 36 girls with established JIA (mean disease duration 18 months), and from 47 age- and sex-matched controls. Results IGF-1 levels in boys were significantly decreased in early JIA compared to male controls, while IGF-1 levels in girls were comparable between JIA and controls. In early JIA, IGF-1 levels were 12-fold lower in boys relative to girls. In controls, IGF-1 levels correlated with both age and height, while these correlations were lost in boys with early JIA. Conclusion We report a sex-dependent deficiency in serum IGF-1 in boys with early JIA, which argues for sex-related differences in biological mechanisms involved in the disease pathogenesis.
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Galea LA, Roes MM, Dimech CJ, Chow C, Mahmoud R, Lieblich SE, Duarte-Guterman P. Premarin has opposing effects on spatial learning, neural activation, and serum cytokine levels in middle-aged female rats depending on reproductive history. Neurobiol Aging 2018; 70:291-307. [DOI: 10.1016/j.neurobiolaging.2018.06.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 06/23/2018] [Accepted: 06/24/2018] [Indexed: 01/28/2023]
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Abstract
BACKGROUND Cohort studies typically bank biospecimens for many years before assay and investigators do not know whether levels of analytes have degraded. METHODS We collected control samples from 22 nonstudy participants using the same enrollment criteria and specimen collection, processing, and storage protocols as The Sister Study. Serum samples were assayed for 21 analytes at collection and 6 years later. For each sample, the difference between the result at baseline and at 6 years was calculated for each analyte. RESULTS Some of the analytes experienced a marked decrease in concentration after 6 years of frozen storage in liquid nitrogen vapor, compared with their baseline value. The confidence interval for the mean paired difference excluded 0 for 8 of the 21 analytes tested (aspartate transaminase, total cholesterol, estradiol, glucose, high-density lipoprotein [HDL] cholesterol, luteinizing hormone, protein, and triglycerides). Two analytes, lactate dehydrogenase and sex hormone binding globulin, increased substantially in concentration over time (confidence interval excluded 0). For compounds substantially affected by storage time, the internal laboratory control variance was greater than the estimated mean percent change for HDL cholesterol and luteinizing hormone, indicating that extent of degradation for these analytes did not exceed technical variation. CONCLUSIONS Despite evidence for systematic changes over long-term storage, correlations between baseline and later measures were high with little relation between size of the correlation and estimated mean difference across time points. QC experiments to assess the impact of long-term storage on anticipated analytes of interest are important in planning cohort studies with banked samples.
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Petrick JL, Falk RT, Hyland PL, Caron P, Pfeiffer RM, Wood SN, Dawsey SM, Abnet CC, Taylor PR, Guillemette C, Murray LJ, Anderson LA, Cook MB. Association between circulating levels of sex steroid hormones and esophageal adenocarcinoma in the FINBAR Study. PLoS One 2018; 13:e0190325. [PMID: 29342161 PMCID: PMC5771564 DOI: 10.1371/journal.pone.0190325] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 12/12/2017] [Indexed: 12/30/2022] Open
Abstract
Background Esophageal adenocarcinoma (EA) is characterized by a strong male predominance. Sex steroid hormones have been hypothesized to underlie this sex disparity, but no population-based study to date has examined this potential association. Methods Using mass spectrometry and ELISA, we quantitated sex steroid hormones and sex hormone binding globulin, respectively, in plasma from males– 172 EA cases and 185 controls–within the Factors Influencing the Barrett/Adenocarcinoma Relationship (FINBAR) Study, a case-control investigation conducted in Northern Ireland and Ireland. Multivariable adjusted logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs) for associations between circulating hormones and EA. Results Higher androgen:estrogen ratio metrics were associated with increased odds of EA (e.g., testosterone:estradiol ratio ORQ4 v. Q1 = 2.58, 95%CI = 1.23–5.43; Ptrend = 0.009). All estrogens and androgens were associated with significant decreased odds of EA. When restricted to individuals with minimal to no decrease in body mass index, the size of association for the androgen:estrogen ratio was not greatly altered. Conclusions This first study of sex steroid hormones and EA provides tentative evidence that androgen:estrogen balance may be a factor related to EA. Replication of these findings in prospective studies is needed to enhance confidence in the causality of this effect.
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Affiliation(s)
- Jessica L Petrick
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Roni T Falk
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Paula L Hyland
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Patrick Caron
- Pharmacogenomics Laboratory, Centre Hospitalier de l'Université Laval de Québec (CHU de Québec) Research Center and Faculty of Pharmacy, Laval University, Québec City, Québec, Canada
| | - Ruth M Pfeiffer
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Shannon N Wood
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Sanford M Dawsey
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Christian C Abnet
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Philip R Taylor
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Chantal Guillemette
- Pharmacogenomics Laboratory, Centre Hospitalier de l'Université Laval de Québec (CHU de Québec) Research Center and Faculty of Pharmacy, Laval University, Québec City, Québec, Canada
| | - Liam J Murray
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast, Northern Ireland, United Kingdom
| | - Lesley A Anderson
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast, Northern Ireland, United Kingdom
| | - Michael B Cook
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
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Leow CH, Fischer K, Leow CY, Cheng Q, Chuah C, McCarthy J. Single Domain Antibodies as New Biomarker Detectors. Diagnostics (Basel) 2017; 7:diagnostics7040052. [PMID: 29039819 PMCID: PMC5745390 DOI: 10.3390/diagnostics7040052] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 09/07/2017] [Accepted: 09/08/2017] [Indexed: 01/02/2023] Open
Abstract
Biomarkers are defined as indicators of biological processes, pathogenic processes, or pharmacological responses to a therapeutic intervention. Biomarkers have been widely used for early detection, prediction of response after treatment, and for monitoring the progression of diseases. Antibodies represent promising tools for recognition of biomarkers, and are widely deployed as analytical tools in clinical settings. For immunodiagnostics, antibodies are now exploited as binders for antigens of interest across a range of platforms. More recently, the discovery of antibody surface display and combinatorial chemistry techniques has allowed the exploration of new binders from a range of animals, for instance variable domains of new antigen receptors (VNAR) from shark and variable heavy chain domains (VHH) or nanobodies from camelids. These single domain antibodies (sdAbs) have some advantages over conventional murine immunoglobulin owing to the lack of a light chain, making them the smallest natural biomarker binders thus far identified. In this review, we will discuss several biomarkers used as a means to validate diseases progress. The potential functionality of modern singe domain antigen binders derived from phylogenetically early animals as new biomarker detectors for current diagnostic and research platforms development will be described.
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Affiliation(s)
- Chiuan Herng Leow
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia.
| | - Katja Fischer
- Bacterial Pathogenesis and Scabies Laboratory, QIMR Berghofer Medical Research Institute, Brisbane 4006, Australia.
| | - Chiuan Yee Leow
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Kelantan 16150, Malaysia.
| | - Qin Cheng
- Department of Drug Resistance and Diagnostics, Australian Army Malaria Institute, Brisbane 4051, Australia.
| | - Candy Chuah
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan 16150, Malaysia.
| | - James McCarthy
- Clinical Tropical Medicine Laboratory, QIMR Berghofer Medical Research Institute, Brisbane 4029, Australia.
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Cohn BA, Cirillo PM, Hopper BR, Siiteri PK. Third Trimester Estrogens and Maternal Breast Cancer: Prospective Evidence. J Clin Endocrinol Metab 2017; 102:3739-3748. [PMID: 28973345 PMCID: PMC5630249 DOI: 10.1210/jc.2016-3476] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 07/25/2017] [Indexed: 01/07/2023]
Abstract
Context Full-term pregnancy is associated with a transient increase and life-time decrease in maternal breast cancer risk. Estrone (E1), estradiol (E2), and estriol (E3) are in high concentration during the third trimester. E1 and E2 metabolism produces carcinogenic intermediaries, and E3 metabolism does not. Objective We tested the hypothesis that higher E3 in pregnancy is protective while higher E1 plus E2 increases risk. Design Prospective case-cohort study (n = 620; 204 cases) nested in a 38-year follow-up of 15,528 pregnant women in the Child Health and Development Studies. We measured E1, E2, and E3 in archived third trimester serum and estimated associations with breast cancer. Setting Northern California Kaiser members receiving obstetric care from 1959 to 1967. Main Outcome Measure Breast cancer diagnosed through 1997. Results Doubling of E1+E2 was associated with greater risk [hazard ratio (HR), 1.7; 95% confidence interval (CI), 1.2 to 2.4]. In contrast, doubling of E3 or the E3/E1+E2 ratio was associated with protection (HR, 0.7; 95% CI, 0.5 to 1.0; HR, 0.6; 95% CI, 0.4 to 0.8, respectively). Associations were stronger for diagnoses within 15 years after delivery compared with 16 to 38 years (Pinteraction = 0.0002) for gravidas >27 years at delivery vs ≤27 (Pinteraction = 0.01) and for primiparas vs multiparas (Pinteraction = 0.02). Conclusions Relatively high third trimester E3 levels might protect parous women from breast cancer and E1 and E2 might enhance the risk. If findings are confirmed, third trimester pregnancy estrogens could help explain how parity affects breast cancer.
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Affiliation(s)
- Barbara A. Cohn
- Child Health and Development Studies, Public Health Institute, Berkeley, California 94709
| | - Piera M. Cirillo
- Child Health and Development Studies, Public Health Institute, Berkeley, California 94709
| | - Bill R. Hopper
- Child Health and Development Studies, Public Health Institute, Berkeley, California 94709
| | - Pentti K. Siiteri
- Child Health and Development Studies, Public Health Institute, Berkeley, California 94709
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Romo-González C, Mendoza E, Mera RM, Coria-Jiménez R, Chico-Aldama P, Gomez-Diaz R, Duque X. Helicobacter pylori infection and serum leptin, obestatin, and ghrelin levels in Mexican schoolchildren. Pediatr Res 2017; 82:607-613. [PMID: 28422951 DOI: 10.1038/pr.2017.69] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 02/19/2017] [Indexed: 12/14/2022]
Abstract
BackgroundThere is little information about the possible role of Helicobacter pylori infection on appetite-regulating peptides in children. This study evaluated the association between H. pylori infection and serum levels of ghrelin, leptin, and obestatin in schoolchildren.MethodsOne hundred seventy-eight schoolchildren, students at boarding schools in Mexico City, participated. H. pylori infection status was determined every 6 months for 1 year by a breath test using 13C-urea; schoolchildren with consistently positive or negative results were selected to participate. Age, sex, and body mass index (BMI) were recorded. Serum concentrations of total ghrelin, leptin, and obestatin via specific enzyme-linked immunosorbent assays were determined.ResultsSchoolchildren with H. pylori infection had lower concentration of leptin, -0.54 pg/ml (95% CI: -0.98 to -0.09), compared to the schoolchildren without infection, after adjustment by age, gender, and BMI. And the children with the infection had a median of obestatin lower in 0.99 ng/ml (95% CI: -1.93 to -0.06) compared with the uninfected children after adjustment by BMI.ConclusionAssociation was found between H. pylori infection and decreased serum concentrations of leptin and obestatin. These results suggest that in schoolchildren, H. pylori infection affects the levels of hormones implicated in regulating appetite and energy homeostasis.
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Affiliation(s)
- Carolina Romo-González
- Experimental Laboratory of Bacteriology, Department of Health, National Institute of Pediatrics, Mexico City, Mexico
| | - Eugenia Mendoza
- Research Unit in Infectious and Parasitic Diseases, Pediatric Hospital, 21st Century National Medical Center, IMSS, Mexico City, Mexico
| | - Robertino M Mera
- Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Rafael Coria-Jiménez
- Experimental Laboratory of Bacteriology, Department of Health, National Institute of Pediatrics, Mexico City, Mexico
| | - Patricia Chico-Aldama
- Experimental Laboratory of Bacteriology, Department of Health, National Institute of Pediatrics, Mexico City, Mexico
| | - Rita Gomez-Diaz
- Unit of Research in Clinical Epidemiology, Specialty Hospital, 21st Century National Medical Center, IMSS, Mexico City, Mexico
| | - Ximena Duque
- Research Unit in Infectious and Parasitic Diseases, Pediatric Hospital, 21st Century National Medical Center, IMSS, Mexico City, Mexico
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Testosterone levels in healthy men correlate negatively with serotonin 4 receptor binding. Psychoneuroendocrinology 2017; 81:22-28. [PMID: 28426945 DOI: 10.1016/j.psyneuen.2017.03.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/14/2017] [Indexed: 12/20/2022]
Abstract
The serotonergic system integrates sex steroid information and plays a central role in mood and stress regulation, cognition, appetite and sleep. This interplay may be critical for likelihood of developing depressive episodes, at least in a subgroup of sensitive individuals. The serotonin 4 receptor (5-HT4R) indexes central serotonergic tonus, which may be related to endogenous sex-steroid levels in the mentally healthy state even though this remains elusive. Here we evaluate if peripheral levels of estradiol and testosterone are associated with 5-HT4R binding as imaged by [11C]SB207145 positron emission tomography in a group of 41 healthy men. We estimated global 5-HT4R binding using a latent variable model framework, which models shared correlation between 5-HT4R across multiple brain regions (hippocampus, amygdala, posterior and anterior cingulate, thalamus, pallidostriatum and neocortex). We tested whether testosterone and estradiol predict global 5-HT4R, adjusting for age. We found that testosterone, but not estradiol, correlated negatively with global 5-HT4R levels (p=0.02) suggesting that men with high levels of testosterone have higher cerebral serotonergic tonus. Our findings corroborate the link between sex hormone levels and serotonin signalling. Future longitudinal studies in clinical relevant populations are needed to elucidate the potential importance of testosterone in the pathophysiology of e.g. major depression and its treatment.
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O'Brien JK, Steinman KJ, Fetter GA, Robeck TR. Androgen and glucocorticoid production in the male killer whale (Orcinus orca): influence of age, maturity, and environmental factors. Andrology 2016; 5:180-190. [DOI: 10.1111/andr.12254] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 06/19/2016] [Accepted: 06/19/2016] [Indexed: 11/30/2022]
Affiliation(s)
- J. K. O'Brien
- SeaWorld and Busch Gardens Reproductive Research Center; SeaWorld Parks and Entertainment; San Diego CA USA
| | - K. J. Steinman
- SeaWorld and Busch Gardens Reproductive Research Center; SeaWorld Parks and Entertainment; San Diego CA USA
| | - G. A. Fetter
- San Diego Zoo Global, Institute for Conservation and Research; San Diego CA USA
| | - T. R. Robeck
- SeaWorld and Busch Gardens Reproductive Research Center; SeaWorld Parks and Entertainment; San Diego CA USA
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Handelsman DJ, Yeap B, Flicker L, Martin S, Wittert GA, Ly LP. Age-specific population centiles for androgen status in men. Eur J Endocrinol 2015; 173:809-17. [PMID: 26385186 DOI: 10.1530/eje-15-0380] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 09/18/2015] [Indexed: 01/14/2023]
Abstract
AIM The age-specific population profiles in men of circulating testosterone and its two bioactive metabolites dihydrotestosterone (DHT) and estradiol (E2) across the adult lifespan and its determinants are not well described. OBJECTIVE Our objective was to deduce smoothed age-specific centiles of circulating testosterone, DHT, and E2 in men using pooled data from population-based studies in three Australian cities from liquid chromatography-mass spectrometry steroid measurements in a single laboratory. DESIGN, SETTING, AND PARTICIPANTS We pooled data of 10 904 serum samples (serum testosterone, DHT, E2, age, height, and weight) from observational population-based studies in three major cities across Australia. MAIN OUTCOME MEASURES Age-specific smoothed centiles for serum testosterone, DHT, and E2 in men aged 35-100 years were deduced by large sample data analysis methods. RESULTS We found that serum testosterone, DHT, and E2 decline gradually from ages 35 onwards with a more marked decline after 80 years of age. Higher weight, BMI, and body surface area as well as shorter stature are associated with reduced serum testosterone, DHT, and E2. CONCLUSIONS Among Australian men, there is a gradual progressive population-wide decline in androgen status during male aging until the age of 80 years after which there is a more marked decline. Obesity and short stature are associated with reduced androgen status. Research into the age-related decline in androgen status should focus on the progressive accumulation of age-related comorbidities to better inform optimal clinical trial design.
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Affiliation(s)
| | - B Yeap
- AndrologyANZAC Research Institute, University of Sydney, Sydney, New South Wales 2139, AustraliaSchool of Medicine and PharmacologyUniversity of Western Australia, Perth, Western Australia, AustraliaDepartment of Endocrinology and DiabetesFiona Stanley Hospital, Perth, Western Australia, AustraliaWestern Australian Centre for Health and AgingCentre for Medical Research, University of Western Australia, Perth, Western Australia, AustraliaDiscipline of MedicineUniversity of Adelaide, Adelaide, South Australia, Australia AndrologyANZAC Research Institute, University of Sydney, Sydney, New South Wales 2139, AustraliaSchool of Medicine and PharmacologyUniversity of Western Australia, Perth, Western Australia, AustraliaDepartment of Endocrinology and DiabetesFiona Stanley Hospital, Perth, Western Australia, AustraliaWestern Australian Centre for Health and AgingCentre for Medical Research, University of Western Australia, Perth, Western Australia, AustraliaDiscipline of MedicineUniversity of Adelaide, Adelaide, South Australia, Australia
| | - L Flicker
- AndrologyANZAC Research Institute, University of Sydney, Sydney, New South Wales 2139, AustraliaSchool of Medicine and PharmacologyUniversity of Western Australia, Perth, Western Australia, AustraliaDepartment of Endocrinology and DiabetesFiona Stanley Hospital, Perth, Western Australia, AustraliaWestern Australian Centre for Health and AgingCentre for Medical Research, University of Western Australia, Perth, Western Australia, AustraliaDiscipline of MedicineUniversity of Adelaide, Adelaide, South Australia, Australia AndrologyANZAC Research Institute, University of Sydney, Sydney, New South Wales 2139, AustraliaSchool of Medicine and PharmacologyUniversity of Western Australia, Perth, Western Australia, AustraliaDepartment of Endocrinology and DiabetesFiona Stanley Hospital, Perth, Western Australia, AustraliaWestern Australian Centre for Health and AgingCentre for Medical Research, University of Western Australia, Perth, Western Australia, AustraliaDiscipline of MedicineUniversity of Adelaide, Adelaide, South Australia, Australia
| | - S Martin
- AndrologyANZAC Research Institute, University of Sydney, Sydney, New South Wales 2139, AustraliaSchool of Medicine and PharmacologyUniversity of Western Australia, Perth, Western Australia, AustraliaDepartment of Endocrinology and DiabetesFiona Stanley Hospital, Perth, Western Australia, AustraliaWestern Australian Centre for Health and AgingCentre for Medical Research, University of Western Australia, Perth, Western Australia, AustraliaDiscipline of MedicineUniversity of Adelaide, Adelaide, South Australia, Australia
| | - G A Wittert
- AndrologyANZAC Research Institute, University of Sydney, Sydney, New South Wales 2139, AustraliaSchool of Medicine and PharmacologyUniversity of Western Australia, Perth, Western Australia, AustraliaDepartment of Endocrinology and DiabetesFiona Stanley Hospital, Perth, Western Australia, AustraliaWestern Australian Centre for Health and AgingCentre for Medical Research, University of Western Australia, Perth, Western Australia, AustraliaDiscipline of MedicineUniversity of Adelaide, Adelaide, South Australia, Australia
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Nilsson E, Carrero JJ, Heimbürger O, Hellberg O, Lindholm B, Stenvinkel P. A cohort study of insulin-like growth factor 1 and mortality in haemodialysis patients. Clin Kidney J 2015; 9:148-52. [PMID: 26798476 PMCID: PMC4720197 DOI: 10.1093/ckj/sfv118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 09/22/2015] [Accepted: 10/19/2015] [Indexed: 01/29/2023] Open
Abstract
Background Protein-energy wasting (PEW) is highly prevalent in haemodialysis (HD) patients and associated with increased mortality and cardiovascular disease (CVD). Insulin-like growth factor 1 (IGF-1) correlates to markers of PEW and CVD. Disturbances in the growth hormone axis in end-stage renal disease (ESRD) could have an impact on survival through increased PEW and CVD. Methods A cohort of 265 incident HD patients (median age 68 years, 59% males) was followed for 3 years. Subjects were categorized according to IGF-1 levels at dialysis initiation. Outcome and comorbidity data were retrieved from national registers. The Kaplan–Meier diagram and Cox proportional hazards model were used for the analysis of survival. Results Patients with IGF-1 levels in the lowest tertile were characterized by female sex, low creatinine, hypoalbuminemia and high C-reactive protein (CRP) levels. IGF-1 levels within the lowest tertile were associated with increased mortality [hazard ratio (HR) 2.4, 95% confidence interval (CI) 1.7–3.4]. This association persisted when corrected for demographic factors (age, sex) and comorbidities (diabetes mellitus, CVD, heart failure) in multivariable analysis. Including high-sensitivity C-reactive protein (hs-CRP) and serum creatinine in the model had a small effect on the magnitude of the hazard. When serum albumin was added to the model, the HR declined from 2.2 to 1.6, but remained significant (P = 0.02). Conclusion Low IGF-1 levels associate with increased mortality in HD, independent of biomarkers of inflammation (hs-CRP) and PEW (creatinine, albumin). Serum albumin modulates the relationship between IGF-1 levels and mortality, indicating shared pathophysiological pathways with IGF-1.
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Affiliation(s)
- Erik Nilsson
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Huddinge, Sweden; Division of Nephrology, Department of Medicine, School of Medicine, Örebro University, Örebro, Sweden
| | - Juan Jesus Carrero
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science , Intervention and Technology, Karolinska Institutet , Huddinge , Sweden
| | - Olof Heimbürger
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science , Intervention and Technology, Karolinska Institutet , Huddinge , Sweden
| | - Olof Hellberg
- Division of Nephrology, Department of Medicine , School of Medicine, Örebro University , Örebro , Sweden
| | - Bengt Lindholm
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science , Intervention and Technology, Karolinska Institutet , Huddinge , Sweden
| | - Peter Stenvinkel
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science , Intervention and Technology, Karolinska Institutet , Huddinge , Sweden
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Schock H, Fortner RT, Surcel HM, Grankvist K, Pukkala E, Lehtinen M, Lundin E. Early pregnancy IGF-I and placental GH and risk of epithelial ovarian cancer: A nested case-control study. Int J Cancer 2015; 137:439-47. [PMID: 25516257 PMCID: PMC4428944 DOI: 10.1002/ijc.29387] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 11/27/2014] [Indexed: 12/22/2022]
Abstract
Insulin-like growth factor-I (IGF-I) signaling may promote ovarian tumor development by exerting mitotic, antiapoptotic and proangiogenic effects. During pregnancy, maternal production of IGF-I is regulated by placental growth hormone (GH). Parity is an established protective factor for ovarian cancer, however, no prior study has evaluated placental GH and IGF-I in pregnancy and epithelial ovarian cancer (EOC). Prior prospective studies on the association between IGF-I and EOC in nonpregnant populations were inconclusive and did not address associations in subtypes of EOC. Among members of the Finnish Maternity Cohort and the Northern Sweden Maternity Cohort, we identified 1,045 EOC cases, diagnosed after recruitment (1975-2008) and before March 2011 and 2,658 individually matched controls. Placental GH and IGF-I were measured in serum from the last pregnancy before EOC diagnosis or selection as control. We used conditional logistic regression to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for tertiles and a doubling of hormone concentrations. Higher IGF-I was associated with a nonsignificant decrease in risk for invasive [ORT3 vs. T1 : 0.79 (0.62-1.02); ptrend = 0.07] and endometrioid tumors [ORT3 vs. T1 : 0.55 (0.28-1.07); ptrend = 0.07]. The protective association between higher IGF-I levels and risk of invasive EOC was stronger in analyses limited to women aged <55 years at diagnosis [ORT3 vs. T1 : 0.74 (0.57-0.96); ptrend = 0.03]. Our study provides the first data on placental GH and IGF-I in pregnancy and EOC risk overall and by subtype. Our data suggest higher IGF-I levels in pregnancy may be associated with lower risk of invasive and endometrioid EOC.
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Affiliation(s)
- Helena Schock
- Division of Cancer Epidemiology, German Cancer Research Center, Heidelberg, Germany
- Department of Medical Biosciences, Umeå University, Umeå, Sweden
| | - Renée T Fortner
- Division of Cancer Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Heljä-Marja Surcel
- Unit of Child and Adolescent Health and Wellbeing, National Institute for Health and Welfare, Oulu, Finland
| | - Kjell Grankvist
- Department of Medical Biosciences, Umeå University, Umeå, Sweden
| | - Eero Pukkala
- Finnish Cancer Registry, Institute for Statistical and Epidemiological Cancer Research, Helsinki, Finland
- School of Public Health, University of Tampere, Tampere, Finland
| | - Matti Lehtinen
- School of Public Health, University of Tampere, Tampere, Finland
| | - Eva Lundin
- Department of Medical Biosciences, Umeå University, Umeå, Sweden
- Public Health and Clinical Medicine: Nutritional Research, Umeå University, Umeå, Sweden
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Ellervik C, Vaught J. Preanalytical Variables Affecting the Integrity of Human Biospecimens in Biobanking. Clin Chem 2015; 61:914-34. [DOI: 10.1373/clinchem.2014.228783] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 04/13/2015] [Indexed: 12/20/2022]
Abstract
Abstract
BACKGROUND
Most errors in a clinical chemistry laboratory are due to preanalytical errors. Preanalytical variability of biospecimens can have significant effects on downstream analyses, and controlling such variables is therefore fundamental for the future use of biospecimens in personalized medicine for diagnostic or prognostic purposes.
CONTENT
The focus of this review is to examine the preanalytical variables that affect human biospecimen integrity in biobanking, with a special focus on blood, saliva, and urine. Cost efficiency is discussed in relation to these issues.
SUMMARY
The quality of a study will depend on the integrity of the biospecimens. Preanalytical preparations should be planned with consideration of the effect on downstream analyses. Currently such preanalytical variables are not routinely documented in the biospecimen research literature. Future studies using biobanked biospecimens should describe in detail the preanalytical handling of biospecimens and analyze and interpret the results with regard to the effects of these variables.
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Affiliation(s)
- Christina Ellervik
- Department of Research, Nykoebing Falster Hospital, Nykoebing Falster, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, MA
| | - Jim Vaught
- International Society for Biological and Environmental Repositories, Vancouver, Canada
- Editor-in-Chief, Biopreservation and Biobanking, Vancouver, Canada
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Lind CM, Beaupre SJ. Natural variation in steroid hormone profiles of male Timber Rattlesnakes, Crotalus horridus, in northwest Arkansas. Gen Comp Endocrinol 2014; 206:72-9. [PMID: 24997417 DOI: 10.1016/j.ygcen.2014.06.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 06/18/2014] [Accepted: 06/20/2014] [Indexed: 11/27/2022]
Abstract
We describe the seasonal profile of circulating steroid hormones (testosterone and corticosterone) in relation to the breeding season in free ranging male Timber Rattlesnakes, Crotalus horridus, over the course of three active seasons. In addition, we examine variation in steroid concentrations across years and in relation to body condition. We found that seasonal profiles of plasma testosterone were different compared to other crotalines with similar mating patterns. Concentrations of testosterone were elevated above baseline in the three months leading up to the single late summer breeding season. Testosterone peaked in July at the onset of the breeding season and dropped to baseline during the peak months of breeding (August and September). Testosterone concentrations also varied annually. Although the exact cause of annual variation could not be established, our results indicate that weather patterns may have driven observed differences. Testosterone concentrations were positively related to body condition, indicating that testosterone production is modulated according to energetic status (particularly in the two months prior to the breeding season). Corticosterone did not vary seasonally or with any measured variable, a result similar to other studied crotalines. Our results highlight the importance of long-term descriptive studies of the regulatory mechanisms that underlie behavior and physiology in diverse taxa, as these mechanisms can vary greatly within and among populations and are valuable in elucidating the intrinsic and extrinsic sources of such variation.
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Affiliation(s)
- Craig M Lind
- Department of Biological Sciences, University of Arkansas, 850 West Dickson Street, SCEN 601, Fayetteville, AR 72701, USA.
| | - Steven J Beaupre
- Department of Biological Sciences, University of Arkansas, 850 West Dickson Street, SCEN 601, Fayetteville, AR 72701, USA
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Yeap BB, Knuiman MW, Divitini ML, Handelsman DJ, Beilby JP, Beilin J, McQuillan B, Hung J. Differential associations of testosterone, dihydrotestosterone and oestradiol with physical, metabolic and health-related factors in community-dwelling men aged 17-97 years from the Busselton Health Survey. Clin Endocrinol (Oxf) 2014; 81:100-8. [PMID: 24428256 DOI: 10.1111/cen.12407] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 11/11/2013] [Accepted: 01/09/2014] [Indexed: 01/13/2023]
Abstract
OBJECTIVES Lower testosterone (T) levels are associated with poorer health outcomes in older men, but associations in younger or middle-aged men are uncertain, and data for dihydrotestosterone (DHT) and oestradiol (E2) are limited. We assessed the associations of circulating T, DHT and E2 with physical and health-related factors in a cohort comprising men aged 17-97 years. PARTICIPANTS AND METHODS Serum from 2143 community-dwelling men from the 1994/95 Busselton Health Survey was assayed for T, DHT and E2 using liquid chromatography-tandem mass spectrometry. Men receiving hormonal therapy or reporting the use of testosterone, or with prostate cancer or orchidectomy were excluded. RESULTS Of the men, 43% had never smoked, 6·1% had diabetes and 16·8% cardiovascular disease (CVD). Mean (±SD) age was 50·3 ± 17·0 years. Total T was moderately correlated with DHT (r = 0·56), E2 (r = 0·35) and sex hormone-binding globulin (r = 0·53). In age-, smoking-, body mass index (BMI)- and sex hormone-binding globulin (SHBG)-adjusted analyses, T was inversely associated with metabolic syndrome score, while DHT and E2 were not associated. In multivariable models, higher total T was associated with lower age, BMI and C-reactive protein, and with higher creatinine and haemoglobin, independently of SHBG. Higher DHT was associated with lower age, BMI and glucose level, and higher creatinine and haemoglobin. E2 was positively associated with age, BMI and haemoglobin. CONCLUSIONS In men spanning younger, middle and older ages, circulating androgens are more related to age and metabolic factors than CVD or chronic disease. Further investigation is required to clarify whether androgens and oestrogens have contrasting roles as risk predictors for CVD.
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Affiliation(s)
- Bu B Yeap
- School of Medicine and Pharmacology, University of Western Australia, Perth, WA, Australia; Department of Endocrinology and Diabetes, Fremantle Hospital, Fremantle, WA, Australia
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Schock H, Surcel HM, Zeleniuch-Jacquotte A, Grankvist K, Lakso HÅ, Fortner RT, Kaaks R, Pukkala E, Lehtinen M, Toniolo P, Lundin E. Early pregnancy sex steroids and maternal risk of epithelial ovarian cancer. Endocr Relat Cancer 2014; 21:831-44. [PMID: 25270324 PMCID: PMC4282682 DOI: 10.1530/erc-14-0282] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Well-established associations between reproductive characteristics and epithelial ovarian cancer (EOC) support an involvement of sex steroid hormones in the etiology of EOC. Limited previous studies have evaluated circulating androgens and the risk of EOC, and estrogens and progesterone have been investigated in only one of the previous studies. Furthermore, there is little data on potential heterogeneity in the association between circulating hormones and EOC by histological subgroup. Therefore, we conducted a nested case-control study within the Finnish Maternity Cohort and the Northern Sweden Maternity Cohort to investigate the associations between circulating pre-diagnostic sex steroid concentrations and the histological subtypes of EOC. We identified 1052 EOC cases among cohort members diagnosed after recruitment (1975-2008) and before March 2011. Up to three controls were individually matched to each case (n=2694). Testosterone, androstenedione, 17-hydroxyprogesterone (17-OHP), progesterone, estradiol (E2), and sex hormone-binding globulin levels were measured in serum samples collected during the last pregnancy before EOC diagnosis. We used conditional logistic regression to estimate odds ratios (ORs) and 95% CIs. Associations between hormones and EOC differed with respect to tumor histology and invasiveness. Sex steroid concentrations were not associated with invasive serous tumors; however, doubling of testosterone and 17-OHP concentration was associated with approximately 40% increased risk of borderline serous tumors. A doubling of androgen concentrations was associated with a 50% increased risk of mucinous tumors. The risk of endometrioid tumors increased with higher E2 concentrations (OR: 1.89 (1.20-2.98)). This large prospective study in pregnant women supports a role of sex steroid hormones in the etiology of EOC arising in the ovaries.
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MESH Headings
- Adenocarcinoma, Clear Cell/blood
- Adenocarcinoma, Clear Cell/diagnosis
- Adenocarcinoma, Clear Cell/etiology
- Adenocarcinoma, Mucinous/blood
- Adenocarcinoma, Mucinous/diagnosis
- Adenocarcinoma, Mucinous/etiology
- Adolescent
- Adult
- Biomarkers, Tumor/blood
- Case-Control Studies
- Cystadenocarcinoma, Serous/blood
- Cystadenocarcinoma, Serous/diagnosis
- Cystadenocarcinoma, Serous/etiology
- Endometrial Neoplasms/blood
- Endometrial Neoplasms/diagnosis
- Endometrial Neoplasms/etiology
- Female
- Follow-Up Studies
- Gonadal Steroid Hormones/adverse effects
- Gonadal Steroid Hormones/blood
- Humans
- Middle Aged
- Neoplasm Invasiveness
- Neoplasm Staging
- Ovarian Neoplasms/blood
- Ovarian Neoplasms/diagnosis
- Ovarian Neoplasms/etiology
- Pregnancy
- Prognosis
- Prospective Studies
- Young Adult
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Affiliation(s)
- Helena Schock
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Heljä-Marja Surcel
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Anne Zeleniuch-Jacquotte
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Kjell Grankvist
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Hans-Åke Lakso
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Renée Turzanski Fortner
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Rudolf Kaaks
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Eero Pukkala
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Matti Lehtinen
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
| | - Paolo Toniolo
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer
| | - Eva Lundin
- Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden Division of Cancer EpidemiologyGerman Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg 69120, GermanyDepartment of Medical BiosciencesUmeå University, Umeå, SwedenUnit of Sexual and Reproductive HealthNational Institute for Health and Welfare, Oulu, FinlandDepartments of Population Health and Environmental MedicineNew York University School of Medicine, New York, New York, USANew York University Cancer InstituteNew York University School of Medicine, New York, New York, USAFinnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer Research, Helsinki, FinlandSchool of Health SciencesUniversity of Tampere, Tampere, FinlandDepartment of Obstetrics and GynecologyNew York University School of Medicine, New York, New York, USAInstitute of Social and Preventive MedicineCentre Hospitalier Universitaire Vaudois (CHUV), Lausanne, SwitzerlandPublic Health and Clinical Medicine: Nutritional ResearchUmeå University, Umeå, Sweden
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Gislefoss RE, Grimsrud TK, Høie K, Mørkrid L. Stability of testosterone measured in male archival serum samples by two different methods. Scandinavian Journal of Clinical and Laboratory Investigation 2012; 72:555-62. [DOI: 10.3109/00365513.2012.705888] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
OBJECTIVE To examine the associations of maternal and child characteristics with early pregnancy maternal concentrations of testosterone, androstenedione, progesterone, 17-hydroxyprogesterone, and estradiol (E2). METHODS We analyzed these hormones among 1,343 women with singleton pregnancies who donated serum samples to the Finnish Maternity Cohort from 1986 to 2006 during the first half of pregnancy (median 11 weeks). The associations of maternal and child characteristics with hormone concentrations were investigated by correlation and multivariable regression. RESULTS Women older than age 30 years had lower androgen and E2 but higher progesterone concentrations than women younger than that age. Multiparous women had 14% lower testosterone, 11% lower androstenedione and 17-hydroxyprogesterone, 9% lower progesterone, and 16% lower E2 concentrations compared with nulliparous women (all P<.05). Smoking mothers had 11%, 18%, and 8% higher testosterone, androstenedione, and 17-hydroxyprogesterone levels, respectively, but 10% lower progesterone compared with nonsmoking women (all P<.05). E2 concentrations were 9% higher (P<.05) among women with a female fetus compared with those with a male fetus. CONCLUSION Parity, smoking, and, to a lesser extent, maternal age and child sex are associated with sex steroid levels during the first half of a singleton pregnancy. The effects of smoking on the maternal hormonal environment and the possible long-term deleterious consequences on the fetus deserve further evaluation.
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Lukanova A, Surcel HM, Lundin E, Kaasila M, Lakso HA, Schock H, Husing A, Kaaks R, Koskela P, Grankvist K, Pukkala E, Zeleniuch-Jacquotte A, Lehtinen M, Toniolo P. Circulating estrogens and progesterone during primiparous pregnancies and risk of maternal breast cancer. Int J Cancer 2011; 130:910-20. [PMID: 21413009 DOI: 10.1002/ijc.26070] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Accepted: 02/18/2011] [Indexed: 11/10/2022]
Abstract
Pregnancy reduces maternal risk of breast cancer in the long term, but the biological determinants of the protection are unknown. Animal experiments suggest that estrogens and progesterone could be involved, but direct human evidence is scant. A case-control study (536 cases and 1,049 controls) was nested within the Finnish Maternity Cohort. Eligible were primiparous women who delivered at term a singleton offspring before age 40. For each case, two individually matched controls by age (± 6 months) and date of sampling (± 3 months) were selected. Estradiol, estrone and progesterone in first-trimester serum were measured by high-performance liquid chromatography tandem mass spectrometry and sex-hormone binding globulin (SHBG) by immunoassay. Odds ratios (OR) and 95% confidence intervals (CI) were estimated through conditional logistic regression. In the whole study population there was no association of breast cancer with any of the studied hormones. In analyses stratified by age at diagnosis, however, estradiol concentrations were positively associated with risk of breast cancer before age 40 (upper quartile OR, 1.81; CI, 1.08-3.06), but inversely associated with risk in women who were diagnosed ≥ age 40 (upper quartile OR, 0.64; CI, 0.40-1.04), p(interaction) 0.004. Risk estimates for estrone mirrored those for estradiol but were less pronounced. Progesterone was not associated with risk of subsequent breast cancer. Our results provide initial evidence that concentrations of estrogens during the early parts of a primiparous pregnancy are associated with maternal risk of breast cancer and suggest that the effect may differ for tumors diagnosed before and after age 40.
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Affiliation(s)
- Annekatrin Lukanova
- Division of Cancer Epidemiology, German Cancer Research Center, Heidelberg, Germany.
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Arrandale VH, Brauer M, Brook JR, Brunekreef B, Gold DR, London SJ, Miller JD, Özkaynak H, Ries NM, Sears MR, Silverman FS, Takaro TK. Exposure assessment in cohort studies of childhood asthma. ENVIRONMENTAL HEALTH PERSPECTIVES 2011; 119:591-597. [PMID: 21081299 PMCID: PMC3094407 DOI: 10.1289/ehp.1002267] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Accepted: 11/16/2010] [Indexed: 05/30/2023]
Abstract
BACKGROUND The environment is suspected to play an important role in the development of childhood asthma. Cohort studies are a powerful observational design for studying exposure-response relationships, but their power depends in part upon the accuracy of the exposure assessment. OBJECTIVE The purpose of this paper is to summarize and discuss issues that make accurate exposure assessment a challenge and to suggest strategies for improving exposure assessment in longitudinal cohort studies of childhood asthma and allergies. DATA SYNTHESIS Exposures of interest need to be prioritized, because a single study cannot measure all potentially relevant exposures. Hypotheses need to be based on proposed mechanisms, critical time windows for effects, prior knowledge of physical, physiologic, and immunologic development, as well as genetic pathways potentially influenced by the exposures. Modifiable exposures are most important from the public health perspective. Given the interest in evaluating gene-environment interactions, large cohort sizes are required, and planning for data pooling across independent studies is critical. Collection of additional samples, possibly through subject participation, will permit secondary analyses. Models combining air quality, environmental, and dose data provide exposure estimates across large cohorts but can still be improved. CONCLUSIONS Exposure is best characterized through a combination of information sources. Improving exposure assessment is critical for reducing measurement error and increasing power, which increase confidence in characterization of children at risk, leading to improved health outcomes.
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Affiliation(s)
- Victoria H. Arrandale
- Dalla Lana School of Public Health, Gage Occupational and Environmental Health Unit, University of Toronto, Toronto, Ontario, Canada
| | - Michael Brauer
- School of Environmental Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jeffrey R. Brook
- Dalla Lana School of Public Health, Gage Occupational and Environmental Health Unit, University of Toronto, Toronto, Ontario, Canada
- Environment Canada, Air Quality Research Division, Toronto, Ontario, Canada
| | - Bert Brunekreef
- Institute for Risk Assessment Sciences, Division of Environmental Epidemiology, Utrecht University, Utrecht, the Netherlands
| | - Diane R. Gold
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
| | - Stephanie J. London
- National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
| | - J. David Miller
- College of Natural Sciences, Carleton University, Ottawa, Ontario, Canada
| | - Halûk Özkaynak
- U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Nola M. Ries
- Health Law Institute, University of Alberta, Edmonton, Alberta, Canada, Faculty of Law and School of Health Information Science, University of Victoria, Victoria, British Columbia, Canada
| | - Malcolm R. Sears
- Firestone Institute for Respiratory Health, McMaster University, Hamilton, Ontario, Canada
| | - Frances S. Silverman
- Dalla Lana School of Public Health, Gage Occupational and Environmental Health Unit, University of Toronto, Toronto, Ontario, Canada
| | - Tim K. Takaro
- Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
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Bergfelt DR, Steinetz BG, Lasano S, West KL, Campbell M, Adams GP. Relaxin and progesterone during pregnancy and the post-partum period in association with live and stillborn calves in bottlenose dolphins (Tursiops truncatus). Gen Comp Endocrinol 2011; 170:650-6. [PMID: 21156178 DOI: 10.1016/j.ygcen.2010.12.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 12/01/2010] [Accepted: 12/05/2010] [Indexed: 10/18/2022]
Abstract
The objectives of this study were to validate a relaxin and progesterone RIA for use in bottlenose dolphins, and quantify and characterize both hormones in extracts of placental tissue and serum collected during pregnancy and the post-partum period, and compare the results between dolphins with live and stillborn calves. In Experiment 1, validation of a heterologous relaxin and progesterone RIA involved specific displacement of antibody-bound radiolabeled human relaxin or progesterone in response to increasing volumes of pooled pregnant dolphin serum and amounts of respective hormone standards added to a fixed volume of serum. The displacement curves were considered parallel and additive relative to respective standard curves. In Experiment 2, immunoreactive relaxin and progesterone were detected in placental extracts and, in corresponding serum samples, concentrations of both hormones were higher during the pre-partum than post-partum periods. Circulatory concentrations of progesterone decreased (P < 0.05) from relatively high concentrations during early and mid-pregnancy to intermediate concentrations by late pregnancy (month effect, P < 0.0001) in dolphins with live births, whereas, in dolphins with stillbirths, the decrease in progesterone began earlier (month-by-birth status interaction, P < 0.007); mean concentrations were lower at mid- (37%, P < 0.06) and late (25%) pregnancy. Temporally, relaxin increased (P < 0.05) progressively from relatively low concentrations during early pregnancy to high concentrations during late pregnancy (month effect, P < 0.0001) and was not different between birth statuses (birth status effect, P = 0.76; month-by-birth status interaction, P = 0.17). Even though the interaction did not reach significance, mean relaxin concentrations were 42%, 29%, and 34% lower at early, mid-, and late pregnancy, respectively, in dolphins with stillbirths than in those with live births. In conclusion, the pregnancy-specific increase in serum concentrations of relaxin and lower concentrations of both relaxin and progesterone in association with stillbirths suggest the potential for relaxin to be used diagnostically to determine pregnancy status, and one or both hormones to be used to assess placental function, and, perhaps, fetal well-being in bottlenose dolphins and other cetaceans.
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Affiliation(s)
- Don R Bergfelt
- US Environmental Protection Agency, Washington, DC 20460, USA.
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Kugler KG, Hackl WO, Mueller LA, Fiegl H, Graber A, Pfeiffer RM. The Impact of Sample Storage Time on Estimates of Association in Biomarker Discovery Studies. J Clin Bioinforma 2011; 1. [PMID: 21743835 PMCID: PMC3131186 DOI: 10.1186/2043-9113-1-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Using serum, plasma or tumor tissue specimens from biobanks for biomarker discovery studies is attractive as samples are often readily available. However, storage over longer periods of time can alter concentrations of proteins in those specimens. We therefore assessed the bias in estimates of association from case-control studies conducted using banked specimens when maker levels changed over time for single markers and also for multiple correlated markers in simulations. Data from a small laboratory experiment using serum samples guided the choices of simulation parameters for various functions of changes of biomarkers over time. RESULTS: In the laboratory experiment levels of two serum markers measured at sample collection and again in the same samples after approximately ten years in storage increased by 15%. For a 15% increase in marker levels over ten years, odds ratios (ORs) of association were significantly underestimated, with a relative bias of -10%, while for a 15% decrease in marker levels over time ORs were too high, with a relative bias of 20%. CONCLUSION: Biases in estimates of parameters of association need to be considered in sample size calculations for studies to replicate markers identified in exploratory analyses.
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Affiliation(s)
- Karl G Kugler
- Institute for Bioinformatics and Translational Research, University for Health Sciences, Medical Informatics and Technology, EWZ 1, 6060, Hall in Tirol, Austria
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Chen T, Surcel HM, Lundin E, Kaasila M, Lakso HA, Schock H, Kaaks R, Koskela P, Grankvist K, Hallmans G, Pukkala E, Zeleniuch-Jacquotte A, Toniolo P, Lehtinen M, Lukanova A. Circulating sex steroids during pregnancy and maternal risk of non-epithelial ovarian cancer. Cancer Epidemiol Biomarkers Prev 2010; 20:324-36. [PMID: 21177423 DOI: 10.1158/1055-9965.epi-10-0857] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Sex steroid hormones have been proposed to play a role in the development of non-epithelial ovarian cancers (NEOC) but so far no direct epidemiologic data are available. METHODS A case-control study was nested within the Finnish Maternity Cohort, the world's largest biorepository of serum specimens from pregnant women. Study subjects were selected among women who donated a blood sample during a singleton pregnancy that led to the birth of their last child preceding diagnosis of NEOC. Case subjects were 41 women with sex cord stromal tumors (SCST) and 21 with germ cell tumors (GCT). Three controls, matching the index case for age, parity at the index pregnancy, and date at blood donation were selected (n = 171). OR and 95% CI associated with concentrations of testosterone, androstenedione, 17-OH-progesterone, progesterone, estradiol, and sex hormone-binding globulin (SHBG) were estimated through conditional logistic regression. RESULTS For SCST, doubling of testosterone, androstenedione, and 17-OH-progesterone concentrations were associated with about 2-fold higher risk of SCST [ORs and 95% CI of 2.16 (1.25-3.74), 2.16 (1.20-3.87), and 2.62 (1.27-5.38), respectively]. These associations remained largely unchanged after excluding women within 2-, 4-, or 6-year lag time between blood donation and cancer diagnosis. Sex steroid hormones concentrations were not related to maternal risk of GCT. CONCLUSIONS This is the first prospective study providing initial evidence that elevated androgens play a role in the pathogenesis of SCST. IMPACT Our study may note a particular need for larger confirmatory investigations on sex steroids and NEOC.
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Affiliation(s)
- Tianhui Chen
- Division of Cancer Epidemiology, German Cancer Research Center, Heidelberg, Germany
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Lim MD, Dickherber A, Compton CC. Before you analyze a human specimen, think quality, variability, and bias. Anal Chem 2010; 83:8-13. [PMID: 21114268 DOI: 10.1021/ac1018974] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Personalized medicine requires capabilities to detect and measure health-associated biomarkers with increasingly specific and sensitive methods, putting analytical chemists at the front lines of translational research. Analytical scientists must be upstream in the experimental design process because the analysis of a biospecimen (tissue, blood, etc.) presents technical and experimental design complexities. (To listen to a podcast about this feature, please go to the Analytical Chemistry multimedia page at pubs.acs.org/page/ancham/audio/index.html.).
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Affiliation(s)
- Mark David Lim
- AAAS Science and Technology Policy Fellowship Program and National Cancer Institute, National Institutes of Health, USA
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Langseth H, Luostarinen T, Bray F, Dillner J. Ensuring quality in studies linking cancer registries and biobanks. Acta Oncol 2010; 49:368-77. [PMID: 20059313 DOI: 10.3109/02841860903447069] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The Nordic countries have a long tradition of providing comparable and high quality cancer data through the national population-based cancer registries and the capability to link the diverse large-scale biobanks currently in operation. The joining of these two infrastructural resources can provide a study base for large-scale studies of etiology, treatment and early detection of cancer. Research projects based on combined data from cancer registries and biobanks provides great opportunities, but also presents major challenges. Biorepositories have become an important resource in molecular epidemiology, and the increased interest in performing etiological, clinical and gene-environment-interaction studies, involving information from biological samples linked to population-based cancer registries, warrants a joint evaluation of the quality aspects of the two resources, as well as an assessment of whether the resources can be successfully combined into a high quality study. While the quality of biospecimen handling and analysis is commonly considered in different studies, the logistics of data handling including the linkage of the biobank with the cancer registry is an overlooked aspect of a biobank-based study. It is thus the aim of this paper to describe recommendations on data handling, in particular the linkage of biobank material to cancer registry data and the quality aspects thereof, based on the experience of Nordic collaborative projects combining data from cancer registries and biobanks. We propose a standard documentation with respect to the following topics: the quality control aspects of cancer registration, the identification of cases and controls, the identification and use of data confounders, the stability of serum components, historical storage conditions, aliquoting history, the number of freeze/thaw cycles and available volumes.
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Affiliation(s)
- Hilde Langseth
- The Cancer Registry of Norway, Institute of Population-based Cancer Research, Department of Etiological Research, Postbox 5313 Majorstuen, 0304 Oslo, Norway.
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Wa Law L, Sahota DS, Wai Chan L, Chen M, Kin Lau T, Leung TY. Effect of long-term storage on placental growth factor and fms-like tyrosine kinase 1 measurements in samples from pregnant women. J Matern Fetal Neonatal Med 2010; 23:1475-80. [DOI: 10.3109/14767051003678242] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Agborsangaya C, Toriola AT, Grankvist K, Surcel HM, Holl K, Parkkila S, Tuohimaa P, Lukanova A, Lehtinen M. The effects of storage time and sampling season on the stability of serum 25-hydroxy vitamin D and androstenedione. Nutr Cancer 2010; 62:51-7. [PMID: 20043259 DOI: 10.1080/01635580903191460] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Knowledge of the stability of serum samples stored in large biobanks is pivotal for reliable assessment of hormone-dependent disease risks. We studied the effects of sample storage time and season of serum sampling on the stability of 25-hydroxy vitamin D (25-OHD) and androstenedione in a stratified random sample of 402 women, using paired sera from the Finnish Maternity Cohort. Serum samples selected were donated between 6 and 24 yr ago. The storage time did not affect serum 25-OHD and androstenedione levels. However, there was a significant mean difference in the 25-OHD levels of sera withdrawn during winter (first sample) vs. during summer (second sample; -18.4 nmol/l, P <or= 0.001). Also at the individual level, there were significant differences in average 25-OHD levels between individuals with the paired sera taken at winter-winter compared with other alternatives (summer-winter, winter-summer, and summer-summer). The androstenedione levels showed no such differences. Long-term storage does not affect serum 25-OHD and androstenedione levels, but sampling season is an important determinant of 25-OHD levels. Stored serum samples can be used to study disease associations with both hormones. However, sampling season needs to be taken into account for 25-OHD by considering matching and stratification and, if possible, serial sampling.
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Kerver JM, Gardiner JC, Dorgan JF, Rosen CJ, Velie EM. Dietary predictors of the insulin-like growth factor system in adolescent females: results from the Dietary Intervention Study in Children (DISC). Am J Clin Nutr 2010; 91:643-50. [PMID: 20089725 PMCID: PMC2824156 DOI: 10.3945/ajcn.2009.28205] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The insulin-like growth factor (IGF) system is associated with the adult diet and chronic disease. Childhood diet may influence chronic disease through its effect on the IGF system; however, there is limited information describing the dietary predictors of the IGF system in adolescents. OBJECTIVE We examined associations between dietary food intake [fat, protein (animal and vegetable), carbohydrate, lactose, dietary fiber, calcium, zinc, and sodium] and serum IGF-I, IGF binding protein 1 (IGFBP-1), IGF binding protein 3 (IGFBP-3), and the IGF-I:IGFBP-3 molar ratio in adolescent females. DESIGN One hundred fifty-nine adolescent females in the Dietary Intervention Study in Children (age range: 14-18 y; 0.2-6.3 y postmenarche) were included. The dietary intake was assessed via three 24-h dietary recalls. IGF-related biomarkers were determined by using radioimmunoassays. Associations between dietary intakes and biomarkers were assessed with Pearson's correlations and multivariable linear regression. Dietary intakes and biomarkers were logarithmically transformed; thus, beta coefficients represented percentages. RESULTS In analyses adjusted for energy, age, and time since menarche, significant correlations (P < 0.05) were as follows: IGF-I with total protein, lactose, calcium, and sodium; IGFBP-3 with total fat (inverse), lactose, fiber, and calcium; IGF-I/IGFBP-3 with lactose and calcium; and IGFBP-1 with vegetable protein. In multivariable analyses, significant predictors of IGF-I were energy (beta = 0.14, P < 0.05) and calcium (beta = 0.14, P < 0.01), the significant predictor of IGFBP-3 was calcium (beta = 0.07, P < 0.05), and significant predictors of IGFBP-1 were vegetable protein (beta = 0.49, P < 0.05) and body mass index-for-age percentile (beta = -0.01, P < 0.001). CONCLUSION This study provides evidence that dietary intake affects IGF-related biomarkers-particularly elevated calcium with IGF-I and IGFBP-3 and elevated vegetable protein with IGFBP-1-and, to our knowledge, is novel in reporting these associations in adolescent females. The Dietary Intervention Study in Children was registered at clinicaltrials.gov as NCT00000459.
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Affiliation(s)
- Jean M Kerver
- Department of Epidemiology, Michigan State University, East Lansing, MI, USA.
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Gislefoss RE, Grimsrud TK, Mørkrid L. Stability of selected serum proteins after long-term storage in the Janus Serum Bank. Clin Chem Lab Med 2009; 47:596-603. [PMID: 19290843 DOI: 10.1515/cclm.2009.121] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Human serum from biobanks is frequently used in prospective epidemiological studies. Long-term storage may modify its composition. A better understanding of the stability of the serum components may improve the interpretation of future studies. METHODS The concentrations of selected proteins; immunoglobulins, carrier proteins and enzymes in samples stored at -25 degrees C for 25 years and 2 years were compared with 1-month-old samples. For each length of storage time, 130 specimens were randomly selected from apparently healthy male blood donors aged 40-49 years. We examined the distribution of values, compared dispersion and localization of central tendency, and established reference intervals for each component. RESULTS The study demonstrated non-significant or numerically small group differences in the concentrations of albumin, aspartate amino transferase, cystatin C, immunoglobulin E, immunoglobulin G, and sex hormone binding globulin. Mean values between fresh and 25-year-old samples suggested larger differences during storage for alanine amino transferase (-73.4%), creatinine kinase (-96.1%), insulin C-peptide (-98.7%), ferritin (-18.5%) and transferrin (+8.2%). CONCLUSIONS The findings showed that long-term storage can introduce a considerable bias for vulnerable components.
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Affiliation(s)
- Randi E Gislefoss
- Institute of Population-Based Cancer Research, Cancer Registry of Norway, Oslo, Norway.
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Holl K, Lundin E, Surcel HM, Grankvist K, Koskela P, Dillner J, Hallmans G, Wadell G, Olafsdottir GH, Ögmundsdottir HM, Pukkala E, Lehtinen M, Stattin P, Lukanova A. Endogenous steroid hormone levels in early pregnancy and risk of testicular cancer in the offspring: A nested case-referent study. Int J Cancer 2009; 124:2923-8. [DOI: 10.1002/ijc.24312] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Veldt BJ, Poterucha JJ, Watt KDS, Wiesner RH, Hay JE, Rosen CB, Heimbach JK, Janssen HLA, Charlton MR. Insulin resistance, serum adipokines and risk of fibrosis progression in patients transplanted for hepatitis C. Am J Transplant 2009; 9:1406-13. [PMID: 19459812 DOI: 10.1111/j.1600-6143.2009.02642.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In the nontransplant setting diabetes mellitus is a risk factor for disease progression in patients with chronic hepatitis C virus (HCV) infection. The impact of early insulin resistance on the development of advanced fibrosis, even in the absence of clinically apparent diabetes mellitus, is not known. Our aim was to determine whether the Homeostasis Model Assessment of Insulin Resistance (HOMA-IR) can be used to identify insulin-resistant patients at risk for rapid fibrosis progression. Cohort study including patients transplanted for chronic HCV between January 1, 1995 and January 1, 2005. One hundred sixty patients were included; 25 patients (16%) were treated for diabetes mellitus and 36 patients (23%) were prediabetic, defined as HOMA-IR >2.5. Multivariate Cox regression analysis showed that insulin resistance (hazard ratio (HR) 2.07; confidence interval (CI) 1.10-3.91, p = 0.024), donor age (HR 1.33;CI 1.08-1.63, p = 0.007) and aspartate aminotransferase (HR 1.03;CI 1.01-1.05, p < 0.001) were significantly associated with a higher probability of developing advanced fibrosis, i.e. Knodell fibrosis stage 3 or 4, whereas steatosis (HR 0.94;CI 0.46-1.92, p = 0.87) and acute cellular rejection (HR 1.72;CI 0.88-3.36, p = 0.111) were not. In conclusion, posttransplant insulin resistance is strongly associated with more severe recurrence of HCV infection. HOMA-IR is an important tool for the identification of insulin resistance among patients at risk for rapid fibrosis progression after liver transplantation for HCV.
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Affiliation(s)
- B J Veldt
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
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