Effects of Chronic Administration of Sibutramine on Body Weight, Food Intake and Motor Activity in Neonatally Monosodium Glutamate-Treated Obese Female Rats: Relationship of Antiobesity Effect with Monoamines
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- NAKAGAWA Terutake
- Central Research Institute, Kaken Pharmaceutical Co. Ltd.
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- UKAI Kiyoharu
- Central Research Institute, Kaken Pharmaceutical Co. Ltd.
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- OHYAMA Tadashi
- Central Research Institute, Kaken Pharmaceutical Co. Ltd.
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- GOMITA Yutaka
- Department of Hospital Pharmacy, Okayama University Medical School
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- OKAMURA Hitoshi
- Department of Anatomy, Kobe University School of Medicine
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抄録
When the hypothalamic ventromedial nucleus and arcuate nucleus were destroyed in rats by treatment with monosodium glutamate in the neonatal stage, increase in the Lee index (body weight 1/3/body length) and in retroperitoneal fat as well as decreases in spontaneous motor activity, food consumption and growth hormone secretion function associated with hypothalamic low body length obesity (monosodium glutamate-treated obesity; MSG-OB) were observed as these rats grew. Treatment with sibutramine at 3 and 10 mg/kg p.o. once a day continuously for 14 days improved these parameters, and the degree of improvement was dose related. The plasma lipid values in MSG-OB rats, which were the same as those in normal rats, were decreased by consecutive administration of sibutramine. Levels of hypothalamic monoamines (MAs) such as norepinephrine, 5-HT (serotonin) and dopamine and their metabolites DOPAC, HVA and 5-HIAA were decreased in MSG-OB rats, and further decrease in them, though slight, was observed with consecutive daily administration of sibutramine, probably as a result of the feedback attributable to an increase in MA in synapses caused by inhibition of MA uptake by sibutramine. These results suggest that sibutramine can activate the MA nervous system by MA uptake inhibition in regions of the brain such as the lateral hypothalamic area and the paraventricular nucleus, which control food intake and sympathetic nerve activity, and the nigrostriatal area related to the extrapyramidal motor system, and thereby exhibit anti-obesity effects in the MSG-OB rat.<br>
収録刊行物
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- Experimental Animals
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Experimental Animals 49 (4), 239-249, 2000
公益社団法人 日本実験動物学会
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詳細情報 詳細情報について
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- CRID
- 1390001205043389312
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- NII論文ID
- 10007343956
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- NII書誌ID
- AA11032321
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- ISSN
- 18817122
- 00075124
- 13411357
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- NDL書誌ID
- 5543709
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- PubMed
- 11109549
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可