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Study · Observational study · n = 67 · 2021

6 results

Pituitary response to GnRH stimulation tests in different FSHB-211 G/T genotypes.

Sansone A, Schubert M, Tüttelmann F, Krallmann C, Zitzmann M, Kliesch S, Gromoll J

Human reproduction (Oxford, England)1 Apr 2021Cited by 4 (Europe PMC)

Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study6

6 results from studies that gave the peptide. 6 results from people.

  1. 01HumanObservational studyActivity measurement

    In men with suspected secondary hypogonadism, serum FSH rose markedly after an intravenous 100 µg bolus of gonadorelin.

    In plain wordsIn men tested for low testosterone, FSH rose markedly after a gonadorelin injection.

    Outcome
    IncreaseFSH rise after gonadorelin
    Study

    n = 67

    Outcome group
    Sex hormones and fertility · Endocrine and hormones
    Studied dose
    100 µg · intravenousAs given in this study (human).

    Source sentences

    Summary
    An overall marked increase in serum FSH and LH following administration i.v. of 100 µg of an LHRH-analogue was found (P < 0.0001 for linear trend, both models).
    2 context sentences
    Summary · context
    This was a cross-sectional, retrospective study on 67 male subjects (mean age: 24.6 ± 10.3 years) undergoing a GnRH stimulation test for diagnostic purposes in cases of secondary hypogonadism.
    Summary · context
    A GnRH stimulation test was performed by administering an i.v. bolus of 100 µg of the GnRH-analogue gonadorelin acetate to all patients, with blood samples drawn from the cubital vein immediately prior to injection (T0) and 30 (T1) and 45 minutes (T2) after.
  2. 02HumanObservational studyActivity measurement

    In men with suspected secondary hypogonadism, serum LH rose markedly after an intravenous 100 µg bolus of gonadorelin.

    In plain wordsIn men tested for low testosterone, LH rose markedly after a gonadorelin injection.

    Outcome
    IncreaseLH rise after gonadorelin
    Study

    n = 67

    Outcome group
    Sex hormones and fertility · Endocrine and hormones
    Studied dose
    100 µg · intravenousAs given in this study (human).

    Source sentences

    Summary
    An overall marked increase in serum FSH and LH following administration i.v. of 100 µg of an LHRH-analogue was found (P < 0.0001 for linear trend, both models).
    2 context sentences
    Summary · context
    This was a cross-sectional, retrospective study on 67 male subjects (mean age: 24.6 ± 10.3 years) undergoing a GnRH stimulation test for diagnostic purposes in cases of secondary hypogonadism.
    Summary · context
    A GnRH stimulation test was performed by administering an i.v. bolus of 100 µg of the GnRH-analogue gonadorelin acetate to all patients, with blood samples drawn from the cubital vein immediately prior to injection (T0) and 30 (T1) and 45 minutes (T2) after.
  3. 03HumanObservational studyActivity measurement

    After gonadorelin, peak LH was significantly higher in men with the TT genotype than in GT and GG carriers.

    In plain wordsAfter a gonadorelin injection, peak LH was higher in men with two T alleles than in other men.

    Outcome
    IncreasePeak LH by FSHB-211 genotype
    Study

    n = 67

    Comparator
    GT and GG carriers
    Outcome group
    Sex hormones and fertility · Endocrine and hormones
    Studied dose
    100 µg · intravenousAs given in this study (human).

    Source sentences

    Summary
    Peak levels of LH were significantly higher in TT carriers than in GT and GG carriers (P = 0.012)
    2 context sentences
    Summary · context
    This was a cross-sectional, retrospective study on 67 male subjects (mean age: 24.6 ± 10.3 years) undergoing a GnRH stimulation test for diagnostic purposes in cases of secondary hypogonadism.
    Summary · context
    A GnRH stimulation test was performed by administering an i.v. bolus of 100 µg of the GnRH-analogue gonadorelin acetate to all patients, with blood samples drawn from the cubital vein immediately prior to injection (T0) and 30 (T1) and 45 minutes (T2) after.
  4. 04HumanObservational studyActivity measurement

    After gonadorelin, stimulated FSH levels did not differ significantly between FSHB-211 genotype groups.

    In plain wordsAfter a gonadorelin injection, FSH levels did not differ between genotype groups.

    Outcome
    No significant changePeak FSH by FSHB-211 genotype
    Study

    n = 67

    Comparator
    Other FSHB-211 genotype groups
    Outcome group
    Sex hormones and fertility · Endocrine and hormones
    Studied dose
    100 µg · intravenousAs given in this study (human).

    Source sentences

    Summary
    no significant between-groups difference was found concerning stimulated FSH levels.
    2 context sentences
    Summary · context
    This was a cross-sectional, retrospective study on 67 male subjects (mean age: 24.6 ± 10.3 years) undergoing a GnRH stimulation test for diagnostic purposes in cases of secondary hypogonadism.
    Summary · context
    A GnRH stimulation test was performed by administering an i.v. bolus of 100 µg of the GnRH-analogue gonadorelin acetate to all patients, with blood samples drawn from the cubital vein immediately prior to injection (T0) and 30 (T1) and 45 minutes (T2) after.
  5. 05HumanObservational studyActivity measurement

    After gonadorelin, the FSH response over time was attenuated in T-allele carriers compared with GG carriers, with no significant main effect of the T allele.

    In plain wordsAfter a gonadorelin injection, FSH rose less over time in men carrying a T allele than in GG men.

    Outcome
    DecreaseFSH response over time by FSHB-211 genotype
    Study

    n = 67

    Comparator
    GG carriers
    Outcome group
    Sex hormones and fertility · Endocrine and hormones
    Studied dose
    100 µg · intravenousAs given in this study (human).

    Source sentences

    Summary
    In both the additive and recessive model, the main effect of T allele(s) did not reach statistical significance concerning FSH levels (P = 0.9502 and P = 0.8576, respectively), yet interaction effects over time demonstrated an attenuated response in T-allele carriers compared to the GG-allele carrie…
    2 context sentences
    Summary · context
    This was a cross-sectional, retrospective study on 67 male subjects (mean age: 24.6 ± 10.3 years) undergoing a GnRH stimulation test for diagnostic purposes in cases of secondary hypogonadism.
    Summary · context
    A GnRH stimulation test was performed by administering an i.v. bolus of 100 µg of the GnRH-analogue gonadorelin acetate to all patients, with blood samples drawn from the cubital vein immediately prior to injection (T0) and 30 (T1) and 45 minutes (T2) after.
  6. 06HumanObservational studyActivity measurement

    After gonadorelin, genotype had significant main and interaction effects on LH in both the additive and recessive models.

    In plain wordsAfter a gonadorelin injection, the LH response differed significantly by genotype in both statistical models.

    Outcome
    Direction not reportedLH response over time by FSHB-211 genotype
    Study

    n = 67

    Outcome group
    Sex hormones and fertility · Endocrine and hormones
    Studied dose
    100 µg · intravenousAs given in this study (human).

    Source sentences

    Summary
    Main and interaction effects for LH were significant in both the additive (P = 0.0022 and P = 0.0013, respectively) and recessive model (P = 0.0025 and P = 0.0016, respectively).
    2 context sentences
    Summary · context
    This was a cross-sectional, retrospective study on 67 male subjects (mean age: 24.6 ± 10.3 years) undergoing a GnRH stimulation test for diagnostic purposes in cases of secondary hypogonadism.
    Summary · context
    A GnRH stimulation test was performed by administering an i.v. bolus of 100 µg of the GnRH-analogue gonadorelin acetate to all patients, with blood samples drawn from the cubital vein immediately prior to injection (T0) and 30 (T1) and 45 minutes (T2) after.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    13 Oct 2026, 21:44 UTC

    Study results updated

  2. Version 1

    13 Oct 2026, 16:31 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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