Cited by 105Estrogen and related hormone effectsCardiovascular and exercise physiologyMenopause: Health Impacts and Treatments

Ovarian Cycle and Sympathoexcitation in Premenopausal Women

Open access
Carter, Jason R., Fu, Qi, Minson, Christopher T., Joyner, Michael J.·2013·Hypertension

Abstract

The influence of the ovarian cycle on muscle sympathetic nerve activity (MSNA) remains controversial. Some studies report an increase of resting MSNA during the mid luteal (ML) phase of the ovarian cycle compared with the early follicular phase, whereas other studies do not. These inconsistent findings may be attributable, in part, to the variable surges in estradiol and progesterone. We tested the hypothesis that the degree of sympathoexcitation during the ML phase (ΔMSNA) is associated with changes in estradiol (ΔE(2)) and progesterone (ΔP). Multiple regression analysis of data from previous studies with complete recordings of mean arterial pressure, MSNA, E(2), and P during both early follicular and ML phases were available from 30 eumenorrheic women (age, 28 ± 1 years; body mass index, 23 ± 0 kg/m(2)). ML phase increased E(2) (37 ± 2 to 117 ± 9 pg/mL; P<0.001), P (1 ± 0 to 11 ± 1 ng/mL; P<0.001), and MSNA (12 ± 1 to 15 ± 1 bursts/min; P=0.02), but did not alter mean arterial pressure (83 ± 2 to 83 ± 2 mm Hg; P=0.91). ΔMSNA was correlated with ΔE(2) (r=-0.50, P=0.003) and ΔE(2)/ΔP (r=-0.52, P=0.002) but not ΔP (r=0.21, P=0.13). There was no association between Δmean arterial pressure and ΔE(2) (r=-0.13, P=0.49), ΔP (r=-0.04, P=0.83), or ΔE(2)/ΔP (r<0.01, P=0.98). In conclusion, sympathoexcitation during the ML phase of the ovarian cycle seems to be dependent, in part, on the degree of sex steroid surges. This dynamic interaction among E(2), P, and MSNA likely explains previously reported inconsistencies in the field; it remains possible that other sex steroids, such as testosterone, might explain further variance.

Integrity signals

Registry

Crossref · 10.1161/hypertensionaha.112.202598

Cites

38 of 38 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

3 of 6 cited sources checked · 3 supported · 0 flagged

  • Findingown data

    During the midluteal phase, estradiol increased compared with the early follicular phase in the 30 premenopausal women.

    “ML phase increased E2 (37±2 to 117±9 pg/ml; p<.001)”
    • Also stated in: § RESULTS · boosted
      “Table 1 demonstrates that estradiol and progesterone were significantly elevated during the ML phase (p<0.001).”
    Quote in the paperSubstantial claim
  • Findingown data

    Changes in MSNA from EF to ML were not significantly correlated with changes in progesterone.

    “ΔMSNA was correlated to ΔE2 (r=−.50, p=.003) and ΔE2/ΔP (r=−.52, p=.002), but not ΔP (r=.21, p=.13).”
    • Also stated in: § RESULTS · hedged
      “tended to be positively correlated to changes in progesterone (p=0.13)”
    Quote in the paperSubstantial claim
  • Findingown data

    The E2/P ratio explained only about 27% of the variance in ΔMSNA.

    “even the E2/P ratio explained only ~27% of the variance in ∆MSNA.”
    Quote in the paperSubstantial claim
  • Findingown data

    Changes in MSNA from EF to ML were negatively correlated with changes in estradiol.

    “ΔMSNA was correlated to ΔE2 (r=−.50, p=.003)”
    • Also stated in: § RESULTS · plain
      “changes in MSNA were negatively correlated to changes in estradiol (p≤0.005)”
    • Also stated in: § DISCUSSION · plain
      “increases in estradiol were significantly correlated with decreases in MSNA during the ML phase”
    Quote in the paperSubstantial claim
  • Findingown data

    Among the sex steroid variables examined, the change in the E2/P ratio had the strongest association with change in MSNA.

    “Our findings demonstrate that the strongest associations were between changes in MSNA and changes in the E2/P ratio.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim. 6
  • May combine two claims. 6
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductcitation

    The order of testing was randomized or counterbalanced for each study.

    “The order of testing was randomized5,8,12 or counterbalanced4,9 for each study.”
    Quote in the paperNot a substantial claim3 of 5 sources checked
    • cites [5] source
    • cites [8] source
    • cites [12] source
    • cites [4] source
    • cites [9] source
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductnone given

    Urinary ovulation kits were used to confirm the LH surge, and midluteal testing was performed 8-10 days after detection.

    “Each study used urinary ovulation kits to confirm the LH surge, and midluteal testing was consistently performed 8–10 days after this detection.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Study design and conductnone given

    The three laboratories had similar training and extensive experience with microneurography and used similar acquisition and analysis procedures.

    “the three laboratories have similar training and extensive experience with the microneurographic technique, and utilize similar acquisition and analysis procedures.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    BMI did not differ between phases in the 22 subjects measured during both phases, and BMI values were strongly correlated.

    “BMI did not differ between phases in the 22 subjects measured during both phases (p=0.89), and the BMI values were strongly correlated (R2 = 0.94, p<0.001).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data

    The findings are consistent with the concept that estradiol is sympathoinhibitory and progesterone is sympathoexcitatory.

    “Our findings are consistent with the prevailing concept that estradiol is sympathoinhibitory and progesterone is sympathoexcitatory.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductnone given

    Venous blood samples were collected to determine estradiol and progesterone levels and to confirm a surge of both during the ML phase.

    “Venous blood samples were collected to determine estradiol and progesterone levels, and to confirm a surge of both estradiol and progesterone during the ML phase.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    All original studies were approved by the corresponding institutional review boards.

    “all studies were approved by the corresponding institutional review boards.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    No outliers were detected in the multiple linear regressions (defined as 3 standard deviations from the mean).

    “All multiple linear regressions were probed for outliers, and we did not detect any outliers as defined as 3 standard deviations from the mean.”
    Quote in the paperNot a substantial claim
8 of 8
  • The authors state this as an assumption.

    Lack of a progesterone surge during the midluteal phase indicates anovulation.

    “After exclusion of assumed anovulation (i.e., lack of progesterone surge during ML)”
1 of 1

Claims other papers make about this one

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Cites

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1 of the 39 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Carter, J. R., Fu, Q., Minson, C. T., & Joyner, M. J.
Affiliations
Michigan Technological University (US)
Venue
Hypertension
Published
2013-02
Volume
61
Issue
2
Pages
395-399
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
OpenAlex
W2140240484
Cited by
105
References
39
Citations by year
2026: 9 · 2025: 8 · 2024: 5 · 2023: 7 · 2022: 3 · 2021: 6 · 2020: 15 · 2019: 5 · 2018: 6 · 2017: 7 · 2016: 5 · 2015: 12 · 2014: 11 · 2013: 6
FWCI
5.56
Type
journal article
Language
en
Open access
Locations
  • Hypertension (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Commons - Michigan Tech (Michigan Technological University) (submittedVersion)
Funders
  • Michigan Technological University
  • National Heart, Lung, and Blood Institute (HL 083947, R21HL098676, HL075283, HL088689, R15HL088689, K23HL075283, HL081671, R01HL081671, R01HL083947)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Menopause: Health Impacts and Treatments
Keywords
ovarian cycle, muscle sympathetic nerve activity, sympathoexcitation, mid-luteal phase, estradiol, progesterone, mean arterial pressure, premenopausal women, eumenorrheic women
MeSH terms
Adult, Blood Pressure, Estradiol, Female, Heart Rate, Humans, Menstrual Cycle, Progesterone, Retrospective Studies, Sympathetic Nervous System, Body Mass Index, Premenopause

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