THE EFFECT OF LUTEINIZING HORMONE REDUCING AGENT ON ANXIETY AND NOVEL OBJECT RECOGNITION MEMORY IN GONADECTOMIZED RATS

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ARFA FATOLLAHKHANI PARIA; Nahavandi Arezoo; ABTAHI HOSSEIN; ANJIDANI SHABNAM; BORHANI SAHAR; JAMEIE SEYED BEHNAM; SHABANI MOHAMMAD; Mehrzadi Saeed; SHAHBAZI ALI

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Journal: Basic and Clinical Neuroscience Year:2017 | Volume:8 | Issue:2 Page(s): 113-119

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Title

THE EFFECT OF LUTEINIZING HORMONE REDUCING AGENT ON ANXIETY AND NOVEL OBJECT RECOGNITION MEMORY IN GONADECTOMIZED RATS

Author(s)

Keywords

MENOPAUSE

ANDROPAUSE

LUTEINIZING HORMONE

GONADECTOMY

ANXIETY

NEW OBJECT RECOGNITION MEMORY

Abstract

Introduction: Mood 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.Methods: 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). 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.Results: GONADECTOMY 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).Conclusion: Findings 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.

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APA: Copy

ARFA FATOLLAHKHANI, PARIA, Nahavandi, Arezoo, ABTAHI, HOSSEIN, ANJIDANI, SHABNAM, BORHANI, SAHAR, JAMEIE, SEYED BEHNAM, SHABANI, MOHAMMAD, Mehrzadi, Saeed, & SHAHBAZI, ALI. (2017). THE EFFECT OF LUTEINIZING HORMONE REDUCING AGENT ON ANXIETY AND NOVEL OBJECT RECOGNITION MEMORY IN GONADECTOMIZED RATS. BASIC AND CLINICAL NEUROSCIENCE, 8(2), 113-119. SID. https://sid.ir/paper/327834/en

Vancouver: Copy

ARFA FATOLLAHKHANI PARIA, Nahavandi Arezoo, ABTAHI HOSSEIN, ANJIDANI SHABNAM, BORHANI SAHAR, JAMEIE SEYED BEHNAM, SHABANI MOHAMMAD, Mehrzadi Saeed, SHAHBAZI ALI. THE EFFECT OF LUTEINIZING HORMONE REDUCING AGENT ON ANXIETY AND NOVEL OBJECT RECOGNITION MEMORY IN GONADECTOMIZED RATS. BASIC AND CLINICAL NEUROSCIENCE[Internet]. 2017;8(2):113-119. Available from: https://sid.ir/paper/327834/en

IEEE: Copy

PARIA ARFA FATOLLAHKHANI, Arezoo Nahavandi, HOSSEIN ABTAHI, SHABNAM ANJIDANI, SAHAR BORHANI, SEYED BEHNAM JAMEIE, MOHAMMAD SHABANI, Saeed Mehrzadi, and ALI SHAHBAZI, “THE EFFECT OF LUTEINIZING HORMONE REDUCING AGENT ON ANXIETY AND NOVEL OBJECT RECOGNITION MEMORY IN GONADECTOMIZED RATS,” BASIC AND CLINICAL NEUROSCIENCE, vol. 8, no. 2, pp. 113–119, 2017, [Online]. Available: https://sid.ir/paper/327834/en

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