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Barat S, Hood RB, Terrell ML, Howards PP, Spencer JB, Wainstock T, Barton H, Pearson M, Kesner JS, Meadows JW, Marcus M, Gaskins AJ. In-utero exposure to polybrominated biphenyl (PBB) and menstrual cycle function in adulthood. Int J Hyg Environ Health 2024; 256:114297. [PMID: 38039561 PMCID: PMC10872753 DOI: 10.1016/j.ijheh.2023.114297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/12/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND There is evidence that in-utero exposure to PBBs, and similar chemicals, are associated with several adverse reproductive health outcomes including altered pubertal timing. However, less is known about the effects of in-utero exposure to PBBs on menstrual cycle function and reproductive hormone levels in adulthood. METHODS For this menstrual cycle study, we recruited reproductive-aged women in the Michigan PBB Registry who were not pregnant, lactating, or taking hormonal medications (2004-2014). A total of 41 women who were born after the PBB contamination incident (1973-1974) and were prenatally exposed to PBBs, were included in this analysis. We estimated in-utero PBB exposure using maternal serum PBB measurements taken after exposure and extrapolated to time of pregnancy using a PBB elimination model. Women were followed for up to 6 months during which they provided daily urine samples and completed daily diaries. The urine samples were assayed for estrone 3-glucuronide (E13G), pregnanediol 3-glucuronide (Pd3G), and follicle stimulating hormone (FSH). RESULTS Women in our study were, on average, 27.5 (SD:5.3) years old and contributed 4.9 (SD:1.9) menstrual cycles of follow-up. Compared to women with low in-utero PBB exposure (≤1 ppb), women with medium (>1.0-3.0 ppb) and high (>3.0 ppb) exposure had higher maximum 3-day mean Pd3G levels during the luteal phase. Specifically, the age- and creatinine-adjusted maximum 3-day mean luteal phase Pd3G levels (95% CI) in increasing categories of in-utero PBB exposure were 9.2 (4.6,13.9), 14.8 (11.6,18.0), and 16.1 (12.9,19.3) μg/mg creatinine. There were no meaningful differences in average cycle length, follicular or luteal phase cycle length, bleed length, or creatinine-adjusted E13G or FSH levels by category of in-utero PBB exposure. CONCLUSION Higher exposure to PBB in-utero was associated with increased progesterone levels across the luteal phase, however, most other menstrual cycle characteristics were largely unassociated with in-utero PBB exposure. Given our modest sample size, our results require cautious interpretation.
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Affiliation(s)
- Suman Barat
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Robert B Hood
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Metrecia L Terrell
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Penelope P Howards
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Jessica B Spencer
- Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Emory University School of Medicine, Atlanta, GA, USA
| | - Tamar Wainstock
- Department of Public Health, Faculty of Health Sciences, Ben-Gurion University, Be'er Sheva, Israel
| | - Hillary Barton
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Melanie Pearson
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - James S Kesner
- Division of Applied Research and Technology, National Institute for Occupational Safety & Health, Cincinnati, OH, USA
| | - Juliana W Meadows
- Health Effects Laboratory Division, National Institute for Occupational Safety & Health, Cincinnati, OH, USA
| | - Michele Marcus
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA; Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Audrey J Gaskins
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
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Goldberg M, Ciesielski Jones AJ, McGrath JA, Barker-Cummings C, Cousins DS, Kipling LM, Meadows JW, Kesner JS, Marcus M, Monteilh C, Sandler DP. Urinary and salivary endocrine measurements to complement Tanner staging in studies of pubertal development. PLoS One 2021; 16:e0251598. [PMID: 33984062 PMCID: PMC8118248 DOI: 10.1371/journal.pone.0251598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/28/2021] [Indexed: 11/24/2022] Open
Abstract
Background Many studies investigating pubertal development use Tanner staging to assess maturation. Endocrine markers in urine and saliva may provide an objective, sensitive, and non-invasive method for assessing development. Objective Our objective was to examine whether changes in endocrine levels can indicate the onset of pubertal development prior to changes in self-rated Tanner stage. Methods Thirty-five girls and 42 boys aged 7 to 15 years were enrolled in the Growth and Puberty (GAP) study, a longitudinal pilot study conducted from 2007–2009 involving children of women enrolled in the Agricultural Health Study (AHS) in Iowa. We collected saliva and urine samples and assessed pubertal development by self-rated Tanner staging (pubic hair, breast development (girls), genital development (boys)) at three visits over six months. We measured dehydroepiandrosterone (DHEA) in saliva and creatinine-adjusted luteinizing hormone (LH), testosterone, follicle stimulating hormone (FSH), estrone 3-glucuronide (E13G) and pregnanediol 3-glucuronide (Pd3G) concentrations in first morning urine. We evaluated the relationships over time between Tanner stage and each biomarker using repeated measures analysis. Results Among girls still reporting Tanner breast stage 1 at the final visit, FSH levels increased over the 6-month follow-up period and were no longer lower than higher stage girls at the end of follow-up. We observed a similar pattern for testosterone in boys. By visit 3, boys still reporting Tanner genital stage 1 or pubic hair stage 1 had attained DHEA levels that were comparable to those among boys reporting Tanner stages 2 or 3. Conclusions Increasing concentrations of FSH in girls and DHEA and testosterone in boys over a 6-month period revealed the start of the pubertal process prior to changes in self-rated Tanner stage. Repeated, non-invasive endocrine measures may complement the more subjective assessment of physical markers in studies determining pubertal onset.
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Affiliation(s)
- Mandy Goldberg
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America
- * E-mail: (MG); (DPS)
| | | | - John A. McGrath
- Social & Scientific Systems, Inc., Durham, North Carolina, United States of America
| | | | - Deborah S. Cousins
- Social & Scientific Systems, Inc., Durham, North Carolina, United States of America
| | - Lauren M. Kipling
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Juliana W. Meadows
- Division of Applied Research and Technology, National Institute for Occupational Safety & Health, Cincinnati, Ohio, United States of America
| | - James S. Kesner
- Division of Applied Research and Technology, National Institute for Occupational Safety & Health, Cincinnati, Ohio, United States of America
| | - Michele Marcus
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
- Departments of Environmental Health and Pediatrics, Emory University Schools of Public Health and Medicine, Atlanta, Georgia, United States of America
| | - Carolyn Monteilh
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Dale P. Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America
- * E-mail: (MG); (DPS)
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Jacobson MH, Howards PP, Kesner JS, Meadows JW, Dominguez CE, Spencer JB, Darrow LA, Terrell ML, Marcus M. Hormonal Profiles of Menstrual Bleeding Patterns During the Luteal-Follicular Transition. J Clin Endocrinol Metab 2020; 105:5770955. [PMID: 32115635 PMCID: PMC7096314 DOI: 10.1210/clinem/dgaa099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/25/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Menstrual cycle function is determined by a complex endocrine axis that controls the ovaries and endometrium. While the late luteal phase is characterized by declining progesterone and estrogen, how these hormonal profiles relate to menstrual bleeding patterns is not well understood. OBJECTIVE Characterize associations between luteal phase hormonal profiles and subsequent menstrual bleeding patterns, specifically spotting before bleeding. DESIGN, SETTING, AND PARTICIPANTS We examined creatinine-adjusted urinary estrone 3-glucuronide (E13G) and pregnanediol 3-glucuronide (Pd3G) levels in relation to spotting in 116 premenopausal women (ages 20-47) who kept daily menstrual diaries and collected first morning urine samples for ≥ 2 consecutive cycles or 1 luteal-follicular transition (n = 283 transitions). We used linear mixed models to estimate associations between luteal phase hormone levels and spotting before bleeding. MAIN OUTCOME MEASURE(S) AND RESULTS Transitions with ≥ 1 days of spotting before menstrual bleeding (n = 118) had greater luteal phase Pd3G levels vs nonspotting transitions (n = 165). Differences in Pd3G between spotting and nonspotting transitions were largest at menses onset (34.8%, 95% confidence interval, 18.9%, 52.7%). Pd3G levels for spotting transitions dropped to similar levels as nonspotting transitions an average of 1 day later, which aligned with the first day of bleeding for transitions with contiguous spotting. Spotting transitions were preceded by slower rates of Pd3G decline than nonspotting transitions, whereas E13G declines were similar. CONCLUSIONS Self-reported bleeding patterns may provide insight into luteal phase Pd3G levels. First bleed appears to be the best choice for defining the end of the luteal phase and achieving hormonal consistency across transitions.
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Affiliation(s)
- Melanie H Jacobson
- New York University School of Medicine, Department of Pediatrics, Division of Environmental Pediatrics, New York, New York
- Emory University, Rollins School of Public Health, Department of Epidemiology, Atlanta, Georgia
- Correspondence and Reprint Requests: Melanie Jacobson, Department of Pediatrics, Division of Environmental Pediatrics, New York University School of Medicine, 462 1st Avenue, Building A, 8th Floor, Room 850, New York, NY 10016.
| | - Penelope P Howards
- Emory University, Rollins School of Public Health, Department of Epidemiology, Atlanta, Georgia
| | - James S Kesner
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, Ohio, retired
| | - Juliana W Meadows
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, Ohio
| | - Celia E Dominguez
- Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Hawaii Pacific Health, Hawaii
| | - Jessica B Spencer
- Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Emory University, Atlanta, Georgia
| | - Lyndsey A Darrow
- School of Community Health Sciences, University of Nevada-Reno, Reno, Nevada
| | - Metrecia L Terrell
- Emory University, Rollins School of Public Health, Department of Epidemiology, Atlanta, Georgia
| | - Michele Marcus
- Emory University, Rollins School of Public Health, Department of Epidemiology, Atlanta, Georgia
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Jacobson MH, Howards PP, Darrow LA, Meadows JW, Kesner JS, Spencer JB, Terrell ML, Marcus M. Thyroid hormones and menstrual cycle function in a longitudinal cohort of premenopausal women. Paediatr Perinat Epidemiol 2018; 32. [PMID: 29517803 PMCID: PMC5980701 DOI: 10.1111/ppe.12462] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Previous studies have reported that hyperthyroid and hypothyroid women experience menstrual irregularities more often compared with euthyroid women, but reasons for this are not well-understood and studies on thyroid hormones among euthyroid women are lacking. In a prospective cohort study of euthyroid women, this study characterised the relationship between thyroid hormone concentrations and prospectively collected menstrual function outcomes. METHODS Between 2004-2014, 86 euthyroid premenopausal women not lactating or taking hormonal medications participated in a study measuring menstrual function. Serum thyroid hormones were measured before the menstrual function study began. Women then collected first morning urine voids and completed daily bleeding diaries every day for three cycles. Urinary oestrogen and progesterone metabolites (estrone 3-glucuronide (E1 3G) and pregnanediol 3-glucuronide (Pd3G)) and follicle-stimulating hormone were measured and adjusted for creatinine (Cr). RESULTS Total thyroxine (T4 ) concentrations were positively associated with Pd3G and E1 3G. Women with higher (vs lower) T4 had greater luteal phase maximum Pd3G (Pd3G = 11.7 μg/mg Cr for women with high T4 vs Pd3G = 9.5 and 8.1 μg/mg Cr for women with medium and low T4 , respectively) and greater follicular phase maximum E1 3G (E1 3G = 41.7 ng/mg Cr for women with high T4 vs E1 3G = 34.3 and 33.7 ng/mg Cr for women with medium and low T4 , respectively). CONCLUSIONS Circulating thyroid hormone concentrations were associated with subtle differences in menstrual cycle function outcomes, particularly sex steroid hormone levels in healthy women. Results contribute to the understanding of the relationship between thyroid function and the menstrual cycle, and may have implications for fertility and chronic disease.
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Affiliation(s)
- Melanie H. Jacobson
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Penelope P. Howards
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Lyndsey A. Darrow
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA,Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA,School of Community Health Sciences, University of Nevada, Reno, NV 89557, USA
| | - Juliana W. Meadows
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH, USA
| | - James S. Kesner
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH, USA
| | | | - Metrecia L. Terrell
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Michele Marcus
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA,Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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Steiner AZ, Pritchard D, Stanczyk FZ, Kesner JS, Meadows JW, Herring AH, Baird DD. Association Between Biomarkers of Ovarian Reserve and Infertility Among Older Women of Reproductive Age. JAMA 2017; 318:1367-1376. [PMID: 29049585 PMCID: PMC5744252 DOI: 10.1001/jama.2017.14588] [Citation(s) in RCA: 219] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
IMPORTANCE Despite lack of evidence of their utility, biomarkers of ovarian reserve are being promoted as potential markers of reproductive potential. OBJECTIVE To determine the associations between biomarkers of ovarian reserve and reproductive potential among women of late reproductive age. DESIGN, SETTING, AND PARTICIPANTS Prospective time-to-pregnancy cohort study (2008 to date of last follow-up in March 2016) of women (N = 981) aged 30 to 44 years without a history of infertility who had been trying to conceive for 3 months or less, recruited from the community in the Raleigh-Durham, North Carolina, area. EXPOSURES Early-follicular-phase serum level of antimüllerian hormone (AMH), follicle-stimulating hormone (FSH), and inhibin B and urinary level of FSH. MAIN OUTCOMES AND MEASURES The primary outcomes were the cumulative probability of conception by 6 and 12 cycles of attempt and relative fecundability (probability of conception in a given menstrual cycle). Conception was defined as a positive pregnancy test result. RESULTS A total of 750 women (mean age, 33.3 [SD, 3.2] years; 77% white; 36% overweight or obese) provided a blood and urine sample and were included in the analysis. After adjusting for age, body mass index, race, current smoking status, and recent hormonal contraceptive use, women with low AMH values (<0.7 ng/mL [n = 84]) did not have a significantly different predicted probability of conceiving by 6 cycles of attempt (65%; 95% CI, 50%-75%) compared with women (n = 579) with normal values (62%; 95% CI, 57%-66%) or by 12 cycles of attempt (84% [95% CI, 70%-91%] vs 75% [95% CI, 70%-79%], respectively). Women with high serum FSH values (>10 mIU/mL [n = 83]) did not have a significantly different predicted probability of conceiving after 6 cycles of attempt (63%; 95% CI, 50%-73%) compared with women (n = 654) with normal values (62%; 95% CI, 57%-66%) or after 12 cycles of attempt (82% [95% CI, 70%-89%] vs 75% [95% CI, 70%-78%], respectively). Women with high urinary FSH values (>11.5 mIU/mg creatinine [n = 69]) did not have a significantly different predicted probability of conceiving after 6 cycles of attempt (61%; 95% CI, 46%-74%) compared with women (n = 660) with normal values (62%; 95% CI, 58%-66%) or after 12 cycles of attempt (70% [95% CI, 54%-80%] vs 76% [95% CI, 72%-80%], respectively). Inhibin B levels (n = 737) were not associated with the probability of conceiving in a given cycle (hazard ratio per 1-pg/mL increase, 0.999; 95% CI, 0.997-1.001). CONCLUSIONS AND RELEVANCE Among women aged 30 to 44 years without a history of infertility who had been trying to conceive for 3 months or less, biomarkers indicating diminished ovarian reserve compared with normal ovarian reserve were not associated with reduced fertility. These findings do not support the use of urinary or blood follicle-stimulating hormone tests or antimüllerian hormone levels to assess natural fertility for women with these characteristics.
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Affiliation(s)
- Anne Z Steiner
- Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill
| | - David Pritchard
- Department of Biostatistics, University of North Carolina, Chapel Hill
| | - Frank Z Stanczyk
- Department of Obstetrics and Gynecology and Preventive Medicine, University of Southern California, Los Angeles
| | - James S Kesner
- National Institute for Occupational Safety and Health, Cincinnati, Ohio
| | - Juliana W Meadows
- National Institute for Occupational Safety and Health, Cincinnati, Ohio
| | - Amy H Herring
- Department of Statistical Science, Duke University, Durham, North Carolina
| | - Donna D Baird
- Epidemiology Branch, National Institute of Environmental Health Science/National Institutes of Health, Research Triangle Park, North Carolina
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Ciesielski Jones AJ, McGrath JA, Feinstein L, Liu R, Barker-Cummings C, Meadows JW, Kesner JS, Marcus M, Sandler DP. Associations between Repeated Measures of Agricultural Pesticide Exposures and Pubertal Markers in a Cohort of Girls. Ann Epidemiol 2017. [DOI: 10.1016/j.annepidem.2017.07.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hines CJ, Jackson MV, Deddens JA, Clark JC, Ye X, Christianson AL, Meadows JW, Calafat AM. Urinary Bisphenol A (BPA) Concentrations among Workers in Industries that Manufacture and Use BPA in the USA. Ann Work Expo Health 2017; 61:164-182. [PMID: 28395354 PMCID: PMC5577557 DOI: 10.1093/annweh/wxw021] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/14/2016] [Accepted: 11/28/2016] [Indexed: 11/14/2022] Open
Abstract
Background Bisphenol A (BPA) toxicity and exposure risk to humans has been the subject of considerable scientific debate; however, published occupational exposure data for BPA are limited. Methods In 2013-2014, 77 workers at six US companies making BPA, BPA-based resins, or BPA-filled wax provided seven urine samples over two consecutive work days (151 worker-days, 525 samples). Participant information included industry, job, tasks, personal protective equipment used, hygiene behaviors, and canned food/beverage consumption. Total (free plus conjugated) BPA, quantified in urine by mass spectrometry, was detected in all samples. Results The geometric mean (GM) creatinine-adjusted total BPA (total BPACR) concentration was 88.0 µg g-1 (range 0.78-18900 µg g-1), ~70 times higher than in US adults in 2013-2014 (1.27 µg g-1). GM total BPACR increased during Day 1 (26.6-127 µg g-1), decreased by pre-shift Day 2 (84.4 µg g-1) then increased during Day 2 to 178 µg g-1. By industry, baseline and post-baseline total BPACR was highest in BPA-filled wax manufacturing/reclaim (GM = 111 µg g-1) and lowest in phenolic resin manufacturing (GM = 6.56 µg g-1). By job, total BPACR was highest at baseline in maintenance workers (GM = 157 µg g-1) and post-baseline in those working with molten BPA-filled wax (GM = 441 µg g-1). Workers in the job of flaking a BPA-based resin had the lowest concentrations at baseline (GM = 4.81 µg g-1) and post-baseline (GM = 23.2 µg g-1). In multiple regression models, at baseline, industry significantly predicted increased total BPACR (P = 0.0248); post-baseline, handling BPA containers (P = 0.0035), taking ≥3 process/bulk samples with BPA (P = 0.0002) and wearing a Tyvek® coverall (P = 0.0042) significantly predicted increased total BPACR (after adjusting for total BPACR at baseline, time point, and body mass index). Conclusion Several work-related factors, including industry, job, and certain tasks performed, were associated with increased urinary total BPACR concentrations in this group of manufacturing workers. The potential for BPA-related health effects among these workers is unknown.
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Affiliation(s)
- Cynthia J Hines
- National Institute for Occupational Safety and Health, 1090 Tusculum Ave, R-14, Cincinnati, OH 45226, USA
| | - Matthew V Jackson
- URS Professional Solutions/RCS Corporation, 2131 S. Centennial Ave, Aiken, SC 29803, USA
| | - James A Deddens
- National Institute for Occupational Safety and Health, 1090 Tusculum Ave, R-14, Cincinnati, OH 45226, USA
| | - John C Clark
- National Institute for Occupational Safety and Health, 1090 Tusculum Ave, R-14, Cincinnati, OH 45226, USA
| | - Xiaoyun Ye
- National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy. MS F17, Atlanta, GA 30341, USA
| | - Annette L Christianson
- National Institute for Occupational Safety and Health, 1090 Tusculum Ave, R-14, Cincinnati, OH 45226, USA
| | - Juliana W Meadows
- National Institute for Occupational Safety and Health, 1090 Tusculum Ave, R-14, Cincinnati, OH 45226, USA
| | - Antonia M Calafat
- National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy. MS F17, Atlanta, GA 30341, USA
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Wainman BC, Kesner JS, Martin ID, Meadows JW, Krieg EF, Nieboer E, Tsuji LJ. Menstrual cycle perturbation by organohalogens and elements in the Cree of James Bay, Canada. Chemosphere 2016; 149:190-201. [PMID: 26855224 PMCID: PMC4827016 DOI: 10.1016/j.chemosphere.2015.12.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 11/23/2015] [Accepted: 12/15/2015] [Indexed: 05/29/2023]
Abstract
Persistent organohalogens (POHs) and metals have been linked to alterations in menstrual cycle function and fertility in humans. The Cree First Nations people living near James Bay in Ontario and Quebec, Canada, have elevated levels of POHs, mercury and lead compared to other Canadians. The present study examines the interrelationships between selected POHs and elements on menstrual cycle function in these Cree women. Menstrual cycle characteristics were derived from structured daily diaries and endocrine measurements from daily urine samples collected during one cycle for 42 women age 19-42. We measured 31 POHs in blood plasma and 18 elements in whole blood, for 31 of the participants. POHs and elements detected in ≥ 70% of the participants were transformed by principal component (PC) analysis to reduce the contaminant exposure data to fewer, uncorrelated PCA variables. Multiple regression analysis revealed that, after adjusting for confounders, PC-3 values showed significant negative association with cycle length, after adjusting for confounders (p = 0.002). PC-3 accounted for 9.2% of the variance and shows positive loadings for cadmium, selenium, and PBDE congeners 47 and 153, and a negative loading for copper. Sensitivity analysis of the model to quantify likely effect sizes showed a range of menstrual cycle length from 25.3 to 28.3 days using the lower and upper 95% confidence limits of mean measured contaminant concentrations to predict cycle length. Our observations support the hypothesis that the menstrual cycle function of these women may be altered by exposure to POHs and elements from their environment.
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Affiliation(s)
- Bruce C Wainman
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada L8S 4K1.
| | - James S Kesner
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH, 45226, USA
| | - Ian D Martin
- Ian Martin Consultants, Elora, ON, Canada N0B 1S0
| | - Juliana W Meadows
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH, 45226, USA
| | - Edward F Krieg
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH, 45226, USA
| | - Evert Nieboer
- Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON, Canada L8S 4K1; Institute of Community Medicine, University of Tromsø, Norway
| | - Leonard J Tsuji
- Health Studies, The Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON, Canada M1C 1A4
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Legro RS, Kunselman AR, Meadows JW, Kesner JS, Krieg EF, Rogers AM, Cooney RN. Time-related increase in urinary testosterone levels and stable semen analysis parameters after bariatric surgery in men. Reprod Biomed Online 2015; 30:150-6. [PMID: 25498592 PMCID: PMC4566141 DOI: 10.1016/j.rbmo.2014.10.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 10/19/2014] [Accepted: 10/29/2014] [Indexed: 11/26/2022]
Abstract
The aim of this prospective cohort study was to determine the time-course in androgen and semen parameters in men after weight loss associated with bariatric surgery. Six men aged 18-40 years, meeting National Institutes of Health bariatric surgery guidelines, were followed between 2005 and 2008. Study visits took place at baseline, then 1, 3, 6 and 12 months after surgery. All men underwent Roux-en-y gastric bypass (RYGB). At each visit, biometric, questionnaire, serum, and urinary specimens and seman analysis were collected. Urinary integrated total testosterone levels increased significantly (P < 0.0001) by 3 months after surgery, and remained elevated throughout the study. Circulating testosterone levels were also higher at 1 and 6 months after surgery, compared with baseline. Serum sex hormone-binding globulin levels were significantly elevated at all time points after surgery (P < 0.01 to P = 0.02). After RYGB surgery, no significant changes occurred in urinary oestrogen metabolites (oestrone 3-glucuronide), serum oestradiol levels, serial semen parameters or male sexual function by questionnaire. A threshold of weight loss is necessary to improve male reproductive function by reversing male hypogonadism, manifested as increased testosterone levels. Further serial semen analyses showed normal ranges for most parameters despite massive weight loss.
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Affiliation(s)
- Richard S Legro
- Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
| | - Allen R Kunselman
- Public Health Sciences, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Juliana W Meadows
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA
| | - James S Kesner
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA
| | - Edward F Krieg
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA
| | - Ann M Rogers
- Surgery, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Robert N Cooney
- Surgery, SUNY Upstate Medical Center, Syracuse, NY 13210, USA
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Legro RS, Dodson WC, Gnatuk CL, Estes SJ, Kunselman AR, Meadows JW, Kesner JS, Krieg EF, Rogers AM, Haluck RS, Cooney RN. Effects of gastric bypass surgery on female reproductive function. J Clin Endocrinol Metab 2012; 97:4540-8. [PMID: 23066115 PMCID: PMC3513539 DOI: 10.1210/jc.2012-2205] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
CONTEXT Reproductive function may improve after bariatric surgery, although the mechanisms and time-related changes are unclear. OBJECTIVE The objective of the study was to determine whether ovulation frequency/quality as well as associated reproductive parameters improve after Roux en Y gastric bypass surgery. DESIGN This was a prospective cohort study that enrolled female subjects from 2005 to 2008 with study visits at baseline and then 1, 3, 6, 12, and up to 24 months after surgery. SETTING The study was conducted at an academic health center. PATIENTS Twenty-nine obese, reproductive-aged women not using confounding medications participated in the study. MAIN OUTCOME MEASURES The primary outcome was integrated levels of urinary progestin (pregnanediol 3-glururonide) from daily urinary collections at 12 months postoperatively. Secondary outcomes were changes in vaginal bleeding, other biometric, hormonal, ultrasound, dual-energy x-ray absorptiometry measures, and Female Sexual Function Index. RESULTS Ninety percent of patients with morbid obesity had ovulatory cycles at baseline, and the ovulatory frequency and luteal phase quality (based on integrated pregnanediol 3-glururonide levels) were not modified by bariatric surgery. The follicular phase was shorter postoperatively [6.5 d shorter at 3 months and 7.9-8.9 d shorter at 6-24 months (P < 0.01)]. Biochemical hyperandrogenism improved, largely due to an immediate postoperative increase in serum SHBG levels (P < 0.01), with no change in clinical hyperandrogenism (sebum production, acne, hirsutism). Bone density was preserved, contrasting with a significant loss of lean muscle mass and fat (P < 0.001), reflecting preferential abdominal fat loss (P < 0.001). Female sexual function improved 28% (P = 0.02) by 12 months. CONCLUSIONS Ovulation persists despite morbid obesity and the changes from bypass surgery. Reproductive function after surgery is characterized by a shortened follicular phase and improved female sexual function.
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Affiliation(s)
- Richard S Legro
- Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, 500 University Drive, H103, Hershey, Pennsylvania 17033, USA.
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11
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Steiner AZ, Long DL, Herring AH, Kesner JS, Meadows JW, Baird DD. Urinary follicle-stimulating hormone as a measure of natural fertility in a community cohort. Reprod Sci 2012; 20:549-56. [PMID: 23171685 DOI: 10.1177/1933719112459226] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
High serum follicle-stimulating hormone (FSH) levels have been associated with diminished ovarian reserve; however, the association between high urinary FSH and reduced natural fertility has yet to be established. We sought to characterize the relationship between a single or multiple measurements of early follicular phase urinary FSH and fertility. Women (n = 209), 30 to 44 years old with no history of infertility, who had been trying to conceive for less than 3 months, provided early follicular phase urine. Participants subsequently kept a diary to record bleeding and intercourse and conducted standardized pregnancy testing for up to 6 months. A subset of women (N = 95) collected urine on cycle day 3 for up to 6 cycles. Urine was analyzed for FSH and creatinine (cr) corrected. Proportional hazard models were used to calculate fecundability ratios (FRs). Urinary FSH levels across cycles from the same woman were highly correlated (adjusted intraclass correlation = .77); within-woman variance was 3-fold lower than variance among women. Women with an initial urinary FSH level <7 mIU/mg cr exhibited a nonsignificant reduction in the probability of pregnancy (adjusted FR 0.71, 95% confidence interval [CI]: 0.45-1.13), as did women with elevated urinary FSH (≥12 mIU/mg cr; adjusted FR 0.78, 95% CI: 0.46-1.32). Using the most recent or maximum urinary FSH value did not strengthen the association. In the general population, urinary FSH levels appear to be nonlinearly associated with fertility; however, broad CIs indicate a lack of statistical significance. Repetitive testing appears to be of little benefit.
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Affiliation(s)
- Anne Z Steiner
- Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill, NC, USA.
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12
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Steiner AZ, Herring AH, Kesner JS, Meadows JW, Stanczyk FZ, Hoberman S, Baird DD. Antimüllerian hormone as a predictor of natural fecundability in women aged 30-42 years. Obstet Gynecol 2012; 117:798-804. [PMID: 21422850 DOI: 10.1097/aog.0b013e3182116bc8] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To generate estimates of the association between markers of ovarian aging and natural fertility in a community sample at risk for ovarian aging. METHODS Women aged 30-44 years with no history of infertility who had been trying to conceive for less than 3 months provided early-follicular phase serum and urine (N=100). Subsequently, these women kept a diary to record menstrual bleeding and intercourse and conducted standardized pregnancy testing for up to 6 months. Serum was analyzed for estradiol, follicle-stimulating hormone (FSH), antimüllerian hormone, and inhibin B. Urine was analyzed for FSH and estrone 3-glucuronide. Diary data on menstrual cycle day and patterns of intercourse were used to calculate day-specific fecundability ratios. RESULTS Sixty-three percent of participants conceived within 6 months. After adjusting for age, 18 women (18%) with serum antimüllerian hormone levels of 0.7 ng/mL or less had significantly reduced fecundability given intercourse on a fertile day compared with women with higher antimüllerian hormone levels (fecundability ratio 0.38; 95% confidence interval [CI] 0.08-0.91). The day-specific fecundability for women with early-follicular phase serum FSH values greater than 10 milli-international units/mL compared with women with lower FSH levels was also reduced, although nonsignificantly (11% of women affected; fecundability ratio 0.44; 95% CI 0.08-1.10). The association with urinary FSH was weaker (27% women affected; fecundability ratio 0.61; 95% CI 0.26-1.26), and the associations for the other markers were weaker still. CONCLUSION Early-follicular phase antimüllerian hormone appears to be associated with natural fertility in the general population. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Anne Z Steiner
- From the Departments of Obstetrics and Gynecology and Biostatistics, University of North Carolina, Chapel Hill, North Carolina; the National Institute for Occupational Safety and Health, Cincinnati, Ohio; the Department of Obstetrics and Gynecology and Preventive Medicine, University of Southern California, Los Angeles, California; and the Epidemiology Branch, National Institute of Environmental Health Science/National Institutes of Health, Research Triangle Park, North Carolina
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13
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Hartman TJ, Mahabir S, Baer DJ, Stevens RG, Albert PS, Dorgan JF, Kesner JS, Meadows JW, Shields R, Taylor PR. Moderate alcohol consumption and 24-hour urinary levels of melatonin in postmenopausal women. J Clin Endocrinol Metab 2012; 97:E65-8. [PMID: 22013099 PMCID: PMC3251938 DOI: 10.1210/jc.2011-1904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Low overnight urinary melatonin metabolite concentrations have been associated with increased risk for breast cancer among postmenopausal women. The Postmenopausal Women's Alcohol Study was a controlled feeding study to test the effects of low to moderate alcohol intake on potential risk factors for breast cancer including serum and urinary levels of hormones and other biomarkers. Previously, we observed significant increases in concentrations of serum estrone sulfate and dehydroepiandrosterone sulfate in participants after consumption of 15 or 30 g (one or two drinks) of alcohol per day. OBJECTIVE In the present analysis, we evaluated the relationship of alcohol consumption with 24-h urinary 6-sulfatoxymelatonin (6-SMT) concentration (micrograms per 24 h). DESIGN AND PARTICIPANTS Healthy postmenopausal women (n = 51) consumed a controlled diet plus each of three treatments (a nonalcoholic placebo beverage or 15 or 30 g alcohol/d) during three 8-wk periods in random order under conditions of weight maintenance. MEASURES 6-SMT was measured in 24-h urine samples that were collected at entry into the study (baseline) and at the midpoint (4 wk) and end (8 wk) of each of the three diet periods. RESULTS Concentration of 6-SMT was not significantly modified by the alcohol treatment after adjustment for body mass index, hours of sleep, daylight hours, and baseline level of 6-SMT. CONCLUSIONS These results suggest that low to moderate daily alcohol consumption does not significantly affect 24-h urinary levels of melatonin among healthy postmenopausal women.
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Affiliation(s)
- T J Hartman
- Departmant of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
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Cragin LA, Kesner JS, Bachand AM, Barr DB, Meadows JW, Krieg EF, Reif JS. Menstrual cycle characteristics and reproductive hormone levels in women exposed to atrazine in drinking water. Environ Res 2011; 111:1293-1301. [PMID: 22000761 DOI: 10.1016/j.envres.2011.09.009] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 09/16/2011] [Accepted: 09/20/2011] [Indexed: 05/31/2023]
Abstract
Atrazine is the most commonly used herbicide in the U.S. and a wide-spread groundwater contaminant. Epidemiologic and laboratory evidence exists that atrazine disrupts reproductive health and hormone secretion. We examined the relationship between exposure to atrazine in drinking water and menstrual cycle function including reproductive hormone levels. Women 18-40 years old residing in agricultural communities where atrazine is used extensively (Illinois) and sparingly (Vermont) answered a questionnaire (n=102), maintained menstrual cycle diaries (n=67), and provided daily urine samples for analyses of luteinizing hormone (LH), and estradiol and progesterone metabolites (n=35). Markers of exposures included state of residence, atrazine and chlorotriazine concentrations in tap water, municipal water and urine, and estimated dose from water consumption. Women who lived in Illinois were more likely to report menstrual cycle length irregularity (odds ratio (OR)=4.69; 95% confidence interval (CI): 1.58-13.95) and more than 6 weeks between periods (OR=6.16; 95% CI: 1.29-29.38) than those who lived in Vermont. Consumption of >2 cups of unfiltered Illinois water daily was associated with increased risk of irregular periods (OR=5.73; 95% CI: 1.58-20.77). Estimated "dose" of atrazine and chlorotriazine from tap water was inversely related to mean mid-luteal estradiol metabolite. Atrazine "dose" from municipal concentrations was directly related to follicular phase length and inversely related to mean mid-luteal progesterone metabolite levels. We present preliminary evidence that atrazine exposure, at levels below the US EPA MCL, is associated with increased menstrual cycle irregularity, longer follicular phases, and decreased levels of menstrual cycle endocrine biomarkers of infertile ovulatory cycles.
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Affiliation(s)
- Lori A Cragin
- Department of Environmental and Radiological Health Sciences, 1681 Campus Delivery, Colorado State University, Fort Collins, CO 80523-1681, USA.
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15
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Legro RS, Pauli JG, Kunselman AR, Meadows JW, Kesner JS, Zaino RJ, Demers LM, Gnatuk CL, Dodson WC. Effects of continuous versus cyclical oral contraception: a randomized controlled trial. J Clin Endocrinol Metab 2008; 93:420-9. [PMID: 18056769 PMCID: PMC2243231 DOI: 10.1210/jc.2007-2287] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Accepted: 11/27/2007] [Indexed: 11/19/2022]
Abstract
CONTEXT Continuous oral contraception may better suppress the ovary and endometrium, lending itself to the treatment of other medical conditions. OBJECTIVE Our objective was to determine the effects of continuous vs. cyclical oral contraception. DESIGN This was a randomized double-blind trial. SETTING This trial was performed at an academic medical center in Pennsylvania. PATIENTS A total of 62 healthy women with regular menses were included in the study. INTERVENTION Cyclical oral contraception (21-d active/7-d placebo given for six consecutive 28-d cycles) vs. continuous (168-d active pill) therapy using a monophasic pill (20 microg ethinyl estradiol and 1 mg norethindrone acetate) was examined. MAIN OUTCOME MEASURES The primary outcome was vaginal bleeding, and secondary outcomes included hormonal, pelvic ultrasound, quality of life, and safety measures. RESULTS There was no statistically significant difference in the number of total bleeding days between groups, but moderate/heavy bleeding was significantly greater with the cyclical regimen [mean 11.0 d (sd 8.5) vs. continuous 5.2 d (sd 6.8); P = 0.005], with both groups decreasing over time. Endogenous serum and urinary estrogens measured over six cycles were significantly lower (P = 0.02 and 0.04, respectively) in the continuous group than the cyclical group. Women in the continuous group also had a smaller ovarian volume and lead follicle size over the course of the trial by serial ultrasound examinations. The Moos Menstrual Distress Questionnaire showed that women on continuous therapy had less associated menstrual pain (P = 0.01) and favorable improvements in behavior (P = 0.04) during the premenstrual period. CONCLUSIONS Continuous oral contraception does not result in a reduction of bleeding days over a 168-d period of observation but provides greater suppression of the ovary and endometrium. These effects are associated with improved patient symptomatology.
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Affiliation(s)
- Richard S Legro
- Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, M.S. Hershey Medical Center, 500 University Drive, H103, Hershey, Pennsylvania 17033, USA.
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16
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Hnat MD, Meadows JW, Brockman DE, Pitzer B, Lyall F, Myatt L. Heat shock protein-70 and 4-hydroxy-2-nonenal adducts in human placental villous tissue of normotensive, preeclamptic and intrauterine growth restricted pregnancies. Am J Obstet Gynecol 2005; 193:836-40. [PMID: 16150283 DOI: 10.1016/j.ajog.2005.01.059] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2004] [Revised: 01/05/2005] [Accepted: 01/25/2005] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The purpose of this study was to compare immunohistochemical expression of heat shock protein-70 (hsp70), a marker for oxidative stress, and 4-hydroxy-2-nonenal adducts (HNE), a marker for lipid peroxidation, in placental villous tissue of normotensive, preeclampsia, and intrauterine growth restricted (IUGR) pregnancies. STUDY DESIGN Placentas were collected and flash frozen in liquid nitrogen after delivery from normotensive pregnancies (n=5), and pregnancies complicated by preeclampsia (n=5), IUGR (n=5), and preeclampsia plus IUGR (n=4). Cryosections were cut and immunostained with polyclonal anti-hsp70 and monoclonal anti-HNE antibodies using Vectastain Elite ABC kit. Normal rabbit serum or mouse IgG were used as negative controls. Three independent observers, blinded to identity of tissue, examined each slide to identify cellular localization and intensity of the immunostaining. Western blot analysis and scanning densitometry were used to quantify and compare the amount of hsp70 and HNE adducts present in tissue homogenates. RESULTS Positive immunostaining for both antibodies was observed in cytoplasm of syncytiotrophoblasts, extravillous trophoblasts, vascular smooth muscle, and endothelial cells for all groups. Expression of hsp70 and HNE adducts was reported as observers' mean stained intensity. Overall, kappa showed good agreement between observers. Immunostaining intensity was similar in all tissue types for each group with the exception that immunostaining was significantly more intense in the vascular endothelium of the preeclamptic group for HNE adducts (P=.02) and significantly less intense in the IUGR group for hsp70 (P=.013). Scanning densitometric analysis of the Western blots showed no significant difference in total hsp70 and HNE adducts expression in all 4 tissue groups. CONCLUSION Immunohistochemistry showed local changes for oxidative stress and lipid peroxidation in the vascular endothelium from placentas of preeclamptic and IUGR pregnancies. However, these changes were masked when studying tissue homogenates.
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Affiliation(s)
- Michael D Hnat
- Department of Obstetrics and Gynecology, University of Cincinnati, College of Medicine, Cincinnati, OH, USA
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17
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Meadows JW, Pitzer B, Brockman DE, Myatt L. Expression and localization of adipophilin and perilipin in human fetal membranes: association with lipid bodies and enzymes involved in prostaglandin synthesis. J Clin Endocrinol Metab 2005; 90:2344-50. [PMID: 15657374 DOI: 10.1210/jc.2004-1199] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lipid storage droplets (LSDs) are subcellular storage depots for triglycerides (TGs) and cholesterol esters surrounded by specific populations of proteins that are necessary for their formation. We have previously described the appearance of LSDs in human fetal membranes with advancing gestation and labor. Perilipin and adipophilin are functional/structural proteins located on the surfaces of intracellular LSDs. Adipophilin and perilipin were both immunolocalized to the amnion epithelium and amnion fibroblasts in human fetal membranes. Adipophilin was also localized to the choriodecidual layer, whereas perilipin was localized to the chorion trophoblasts. Although immunohistochemical data show an apparent increase in adipophilin, but not perilipin, expression in fetal membranes with advancing gestation and labor, Western analysis of tissue homogenate supernatant revealed no significant changes in adipophilin and perilipin expression. However, Western analysis of the floating lipid-rich layer from the tissue homogenate revealed an abundance of adipophilin and perilipin as well as other enzymes (cytosolic phospholipase A2, prostaglandin endoperoxide, and microsomal-associated prostaglandin E synthase-1) involved in prostaglandin synthesis. The association of these enzymatically active proteins with LSDs suggests that LSDs may be foci for signaling via the arachidonic acid cascade in fetal membranes. The structural and functional roles of adipophilin and perilipin in gestation and labor remain to be determined.
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Affiliation(s)
- Juliana W Meadows
- Department of Obstetrics and Gynecology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, Ohio 45267-0526, USA
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18
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Meadows JW, Pitzer B, Brockman DE, Myatt L. Differential Localization of Prostaglandin E Synthase Isoforms in Human Placental Cell Types. Placenta 2004; 25:259-65. [PMID: 15028417 DOI: 10.1016/j.placenta.2003.09.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2003] [Revised: 09/03/2003] [Accepted: 09/04/2003] [Indexed: 11/16/2022]
Abstract
Increased prostaglandin E(2)(PGE(2)) synthesis involves multiple enzymes and two isoforms of the terminal enzyme of this biosynthetic pathway, PGE synthase (PGES), were recently identified. Cytosolic PGES (cPGES) is identical to the Hsp90 chaperone, p23, and is reportedly functionally coupled to constitutive PG endoperoxide H synthase-1 (PGHS-1). Microsomal PGES (mPGES), on the other hand, is inducible by proinflammatory cytokines such as IL-1beta. We have studied the cellular localization of both enzyme isoforms in human placenta at term and early gestation (10 weeks). Cytosolic PGES was immunolocalized to the fibroblasts and macrophages in villous stroma, whereas mPGES was localized in the extravillous trophoblasts (EVTs) as well as macrophages in both term and early gestation tissues. Microsomal PGES was also observed in cytotrophoblasts (CTs), but not in syncytiotrophoblasts (STs), in early gestation. Apoptotic early gestational STs were heavily stained with cPGES. We also investigated the cellular localization of cPLA(2)and PGHS-2 in early gestation and at term. Cytosolic PLA(2)was immunolocalized to the stroma and STs at term, but was only observed in CTs in early gestation. PGHS-2, on the other hand, was immunolocalized to both extravillous and STs in early gestation and at term. Our results suggest that mPGES could play a role in trophoblast invasion via its association with EVTs in the basal plate, whereas cPGES could be involved in apoptosis or repair mechanisms.
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Affiliation(s)
- J W Meadows
- Department of Obstetrics and Gynecology, University of Cincinnati, College of Medicine, 231 Albert Sabin Way, MSB 5454, Cincinnati, OH 45267, USA.
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Meadows JW, Eis ALW, Brockman DE, Myatt L. Expression and localization of prostaglandin E synthase isoforms in human fetal membranes in term and preterm labor. J Clin Endocrinol Metab 2003; 88:433-9. [PMID: 12519887 DOI: 10.1210/jc.2002-021061] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Increased prostaglandin (PG) synthesis by fetal membranes occurs at parturition. PGE(2) synthesis from arachidonic acid involves multiple enzymes and two isoforms of the terminal enzyme of this biosynthetic pathway, PGE synthase (PGES), were recently identified. Cytosolic PGES (cPGES) is identical to the heat shock protein 90 chaperone, p23, and is reportedly functionally coupled to constitutive PG endoperoxide H synthase-1. Microsomal PGES (mPGES) is inducible by proinflammatory cytokines such as IL-1 beta. We have studied expression and localization of both enzyme isoforms in human fetal membranes either at term or preterm, with or without labor. The cPGES was immunolocalized in the amnion epithelium, and associated with fibroblasts and macrophages in the choriodecidual layer, whereas mPGES was localized in the amnion epithelium as well as the chorion trophoblast. Both enzymes were found to be associated with lipid particles present in the amnion epithelium, which are more prevalent in term tissues. Western blot analysis of the amnion and choriodecidua showed no differences in amounts of either cPGES or mPGES at term or preterm, with or without labor, in either tissue with advancing gestation. It does not appear that expression of PGES is the rate-limiting step in PGE2 synthesis in fetal membranes at labor.
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Affiliation(s)
- Juliana W Meadows
- Department of Obstetrics and Gynecology, University of Cincinnati, Cincinnati, Ohio 45267-0528, USA
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Abstract
A chimaeric gene was constructed encoding the pre-sequence of the 33 kDa oxygen-evolving complex protein from wheat (a thylakoid lumen protein) linked to ricin A chain. The fusion protein is efficiently imported by isolated pea chloroplasts and localised partly in the stroma, with the remainder bound to the stromal surface of the thylakoids. The imported protein is fully processed by both the stromal and thylakoidal processing peptidases, indicating that partial or complete translocation across the thylakoid membrane has taken place.
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Affiliation(s)
- L M Roberts
- Department of Biological Sciences, University of Warwick, Coventry, UK
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Kirwin PM, Meadows JW, Shackleton JB, Musgrove JE, Elderfield PD, Mould R, Hay NA, Robinson C. ATP-dependent import of a lumenal protein by isolated thylakoid vesicles. EMBO J 1989; 8:2251-5. [PMID: 16453897 PMCID: PMC401155 DOI: 10.1002/j.1460-2075.1989.tb08349.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The 33 kd protein of the photosynthetic oxygen-evolving complex is synthesized in the cytoplasm as a larger precursor and transported into the thylakoid lumen via a stromal intermediate form. In this report we describe a reconstituted system in which the later stages of this import pathway can be studied in isolation. We demonstrate import of the 33 kd protein, probably as the intermediate form, into isolated pea thylakoids by a mechanism which is stimulated by the addition of ATP. The imported protein is processed to the mature size and is resistant to digestion by proteases. The thylakoidal protein transport system is specific in that non-chloroplast proteins and precursors of stromal proteins are not imported.
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Affiliation(s)
- P M Kirwin
- Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
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