A mouse model of weight gain after nicotine withdrawal

Takeda, Kazuki; Aotani, Daisuke; Kuga, Yusuke; Jinno, Tomoki; Guo, Tingting; Ogawa, Kento; Shimizu, Yuki; Hattori, Rei; Yagi, Takashi; Koyama, Hiroyuki; Matsumura, Shigenobu; Kataoka, Hiromi; Tanaka, Tomohiro

doi:10.1016/j.bbrc.2021.12.064

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…The results showed a significant increase in body weight during NW compared with normal conditions, which continued until the last day of observation. Similarly, a previous report found that weight gain during NW conditions can persists for up to 14 days [31]. According to another research, nicotine was a major component of cigarette smoke, which reduced appetite [32].…”

Section: Discussionmentioning

confidence: 64%

Epigallocatechin Gallate Ameliorates Nicotine Withdrawal Conditions-Induced Somatic and Affective Behavior Changes in Mice and Its Molecular Mechanism

Rahmadi

Nurhan

Rahmawati

et al. 2023

Behavioural Neurology

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In nicotine withdrawal (NW) conditions, molecular changes, such as increasing corticotropin-releasing factor (CRF) in the amygdala, and melanocortin signaling in the hypothalamus, can occur in the brain, leading to increased feeding behavior and body weight as somatic changes as well as high anxiety-like behavior as an affective changes. Therefore, this research aimed to investigate the effect of epigallocatechin gallate (EGCG), the largest component in green tea, on CRF, pro-opiomelanocortin (POMC), and melanocortin four receptor gene expression in the brain under NW conditions. The 24 Balb/c male mice used were randomly divided into four groups. The doses used included normal saline 1.0 mL/kg as a control group, and nicotine 3.35 mg/kg that was administered subcutaneously three times a day. After NW conditions, EGCG 50 mg/kg was administered intraperitoneally two times a day. Behavior evaluation was performed to measure somatic and affective changes, and the animal was sacrificed for molecular analysis. The results showed that NW conditions significantly increased food intake, body weight, and anxiety-like behavior compared with the normal group. Meanwhile, EGCG significantly decreased food intake, body weight, and anxiety-like behavior compared with NW conditions in mice without EGCG. The polymerase chain reaction results also showed that EGCG decreased the CRF mRNA expression in the amygdala and increased the POMC. This indicated that EGCG improved somatic and affective behavior in NW conditions by decreasing CRF mRNA expression in the amygdala and increasing POMC mRNA expression in the hypothalamus.

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Section: Discussionmentioning

confidence: 64%