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Study · Not a test of the peptide alone · 2017

2 results

The Effect of Luteinizing Hormone Reducing Agent on Anxiety and Novel Object Recognition Memory in Gonadectomized Rats.

Arfa-Fatollahkhani P, Nahavandi A, Abtahi H, Anjidani S, Borhani S, Jameie SB, Shabani M, Mehrzadi S, Shahbazi A

Basic and clinical neuroscience1 Mar 2017Cited by 15 (Europe PMC)

Summary

IntroductionMood disorders such as anxiety and depression are common following menopause and andropause. Lack of sex steroid hormones is suggested as the primary cause of these disturbances. The level of luteinizing hormone (LH) would also rise 3-4 times than normal in these people. The potential effects of LH on mood and cognitive symptoms following menopause and andropause are still unknown. This study aimed to investigate the effect of increased LH on novel object discrimination (NOD) memory and anxiety like behavior in gonadectomized rats.MethodsFour-month-old male and female Wistar rats were randomly assigned into 4 groups (in each sex): control rats (Cont), gonadectomized without treatment (GnX), gonadectomized treated with triptorelin, a GnRH agonist which reduces LH release eventually, (GnX+Tr), gonadectomized treated with triptorelin plus sex steroid hormone, estradiol in female and testosterone in male rats (GnX+Tr+S/T). After 4 weeks treatment, anxiety score (elevated plus maze) and NOD were measured. Data were analyzed using One-way ANOVA, and P-values less than 0.05 were considered as significant.ResultsGonadectomy increased anxiety like behaviors (decrease of presence time in the open arms) in female rats (P=0.012), but not in male ones (P=0.662). Additionally, triptorelin alone reduced the increased anxiety score in gonadectomized female rats, compared to group treated with both triptorelin and estradiol. Furthermore, it was shown that gonadectomy and or treatment with triptorelin and sex steroids had no significant effect on novel object recognition memory in both female (P=0.472) and male rats (P=0.798).ConclusionFindings of this study revealed that increased level of LH following menopause or andropause should be considered as a possible cause for increased anxiety. Also, this study showed that LH reducing agents would reduce anxiety like behavior in gonadectomized female rats. The effect of increased LH on cognitive functions such as novel object recognition memory was not evident in this study and needs further studies.
CC BYText from Europe PMC. Highlighted sentences are the source of results.

Results from this study2

No result from this study comes from a test of the peptide.

Studies that did not test the peptide alone2

In this study, Triptorelin (Trelstar, Decapeptyl) was a lab tool or a carrier, part of a mix, or the subject of a lab method. These results are not evidence about taking Triptorelin (Trelstar, Decapeptyl).

  1. 01AnimalNot a test of Triptorelin (Trelstar, Decapeptyl) aloneAnimal study (in vivo)Efficacy outcome

    In female rats, novel object recognition memory did not differ significantly across control, gonadectomy, triptorelin, and triptorelin-plus-estradiol groups.

    In plain wordsIn female rats, object recognition memory did not differ significantly across control, gonadectomy, triptorelin, and triptorelin-plus-estradiol groups.

    Outcome
    No significant changeNovel object recognition memory in females
    Study

    ratn: not reported in source

    Gonadectomized Wistar rats
    Comparator
    Control, gonadectomy alone, and triptorelin with or without estradiol
    Outcome group
    Cognition and memory · Nervous system and cognition

    Source sentences

    Summary
    Furthermore, it was shown that gonadectomy and or treatment with triptorelin and sex steroids had no significant effect on novel object recognition memory in both female (P=0.472) and male rats (P=0.798).
    3 context sentences
    Summary · context
    Additionally, triptorelin alone reduced the increased anxiety score in gonadectomized female rats, compared to group treated with both triptorelin and estradiol.
    Summary · context
    Four-month-old male and female Wistar rats were randomly assigned into 4 groups (in each sex): control rats (Cont), gonadectomized without treatment (GnX), gonadectomized treated with triptorelin, a GnRH agonist which reduces LH release eventually, (GnX+Tr), gonadectomized treated with triptorelin plus sex steroid hormone, estradiol in female and testosterone in male rats (GnX+Tr+S/T).
    Summary · context
    After 4 weeks treatment, anxiety score (elevated plus maze) and NOD were measured.

    In this study, Triptorelin (Trelstar, Decapeptyl) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Triptorelin (Trelstar, Decapeptyl).

  2. 02AnimalNot a test of Triptorelin (Trelstar, Decapeptyl) aloneAnimal study (in vivo)Efficacy outcome

    In male rats, novel object recognition memory did not differ significantly across control, gonadectomy, triptorelin, and triptorelin-plus-testosterone groups.

    In plain wordsIn male rats, object recognition memory did not differ significantly across control, gonadectomy, triptorelin, and triptorelin-plus-testosterone groups.

    Outcome
    No significant changeNovel object recognition memory in males
    Study

    ratn: not reported in source

    Gonadectomized Wistar rats
    Comparator
    Control, gonadectomy alone, and triptorelin with or without testosterone
    Outcome group
    Cognition and memory · Nervous system and cognition

    Source sentences

    Summary
    Furthermore, it was shown that gonadectomy and or treatment with triptorelin and sex steroids had no significant effect on novel object recognition memory in both female (P=0.472) and male rats (P=0.798).
    2 context sentences
    Summary · context
    Four-month-old male and female Wistar rats were randomly assigned into 4 groups (in each sex): control rats (Cont), gonadectomized without treatment (GnX), gonadectomized treated with triptorelin, a GnRH agonist which reduces LH release eventually, (GnX+Tr), gonadectomized treated with triptorelin plus sex steroid hormone, estradiol in female and testosterone in male rats (GnX+Tr+S/T).
    Summary · context
    After 4 weeks treatment, anxiety score (elevated plus maze) and NOD were measured.

    In this study, Triptorelin (Trelstar, Decapeptyl) was a lab tool or a carrier, part of a mix, or the subject of a lab method. This result is not evidence about taking Triptorelin (Trelstar, Decapeptyl).

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

    22 Oct 2026, 02:26 UTC

    Study results updated

  2. Version 1

    21 Oct 2026, 18:59 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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