Impulsive trait of patients with different subtypes of anorexia nervosa and its association with 5-hydroxytryptamine transporter gene-linked polymorphic region polymorphism

doi:10.3969/j.issn.1674-8115.2021.12.016

Abstract

Abstract: Objective

·To explore the impulsive trait of patients with different subtypes of anorexia nervosa (AN) and its relationship with 5-hydroxytryptamine transporter gene-linked polymorphic region (5-HTTLPR) polymorphism.

Methods

·The patients with AN treated in the Clinical Psychosomatic Ward and Psychological Counseling Clinic of Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine from July 2013 to July 2018 were selected, including 76 patients with restricting type (AN-R group) and 81 patients with binge/pursing type (AN-BP group). The general situations, clinical characteristics and impulsive traits of the two groups were analyzed by General Situation Questionnaire, Eating Disorder Examination Questionnaire 6.0 (EDE-Q 6.0) and Barratt Impulsivity Scale 11th Version (BIS-11), respectively. Quantitative real-time PCR was used to detect the 5-HTTLPR polymorphism of the two groups, and genotyping was performed.

Results

·Compared with AN-R group, the total score of EDE-Q 6.0 and its four subscales, the total score of BIS-11 and its three dimensions in AN-BP group were increased (all P<0.05). However, there was no significant difference in the distribution of 5-HTTLPR genotype and allele frequencies between the two groups. At the same time, there was no significant difference in the total score of BIS-11 and its three dimensions among AN patients with three 5-HTTLPR genotypes (S/S, S/L, L/L).

Conclusion

·AN-BP patients have more obviously impulsive traits than AN-R patients, but there is no correlation between two disease subtypes or impulsive traits and 5-HTTLPT polymorphism.

Key words: anorexia nervosa (AN), 5-hydroxytryptamine transporter gene-linked polymorphic region (5-HTTLPR), polymorphism, impulsive trait

CLC Number:

749.92

Li MEI, Jing ZHANG, Qing KANG, Cheng LIAN, Su-fang PENG, Shun-ying YU, Jue CHEN. Impulsive trait of patients with different subtypes of anorexia nervosa and its association with 5-hydroxytryptamine transporter gene-linked polymorphic region polymorphism[J]. JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE), 2021, 41(12): 1656-1660.

Figures/Tables 4

TrendMD

References 26

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Item	AN-R group （n=76）	AN-BP group （n=81）	t/F value	P value
General condition
Age/year	16.40±3.22	19.94±4.89	-5.303	0.000
Education years/year	10.16±3.12	12.74±3.19	-4.998	0.000
BMI/（kg·m^-2）	14.40±2.26	16.22±1.79	16.077	0.000
Clinical characteristic
EDE-Q 6.0 score/score	1.53±1.24	2.84±1.48	21.052	0.000
Restraint/score	1.34±1.46	2.37±1.78	7.349	0.008
Eating concern/score	1.29±1.30	3.15±1.59	41.759	0.000
Shape concern/score	1.96±1.49	3.18±1.64	12.840	0.001
Weight concern/score	1.59±1.31	2.80±1.78	14.060	0.000
Impulsive trait
BIS-11 score/score	49.91±8.02	59.57±8.45	23.970	0.000
Attentional impulsiveness/score	11.61±2.80	14.64±4.36	17.123	0.000
Motor impulsiveness/score	16.33±3.36	18.97±3.52	10.281	0.002
Nonplanning impulsiveness/score	21.87±4.33	25.65±4.21	13.454	0.000

Item	AN-R group （n=76）	AN-BP group （n=81）	t/F value	P value
General condition
Age/year	16.40±3.22	19.94±4.89	-5.303	0.000
Education years/year	10.16±3.12	12.74±3.19	-4.998	0.000
BMI/（kg·m^-2）	14.40±2.26	16.22±1.79	16.077	0.000
Clinical characteristic
EDE-Q 6.0 score/score	1.53±1.24	2.84±1.48	21.052	0.000
Restraint/score	1.34±1.46	2.37±1.78	7.349	0.008
Eating concern/score	1.29±1.30	3.15±1.59	41.759	0.000
Shape concern/score	1.96±1.49	3.18±1.64	12.840	0.001
Weight concern/score	1.59±1.31	2.80±1.78	14.060	0.000
Impulsive trait
BIS-11 score/score	49.91±8.02	59.57±8.45	23.970	0.000
Attentional impulsiveness/score	11.61±2.80	14.64±4.36	17.123	0.000
Motor impulsiveness/score	16.33±3.36	18.97±3.52	10.281	0.002
Nonplanning impulsiveness/score	21.87±4.33	25.65±4.21	13.454	0.000

Item	AN-R group （n=58）	AN-BP group （n=62）	χ² value	P value
Genotype/n（%）			1.415	0.493
S/S	32 （55.2）	28 （45.2）
S/L	21 （36.2）	29 （46.8）
L/L	5 （8.6）	5 （8.1）
Allele/n（%）			0.648	0.421
S	85 （73.3）	85 （68.5）
L	31 （26.7）	39 （31.5）

Item	AN-R group （n=58）	AN-BP group （n=62）	χ² value	P value
Genotype/n（%）			1.415	0.493
S/S	32 （55.2）	28 （45.2）
S/L	21 （36.2）	29 （46.8）
L/L	5 （8.6）	5 （8.1）
Allele/n（%）			0.648	0.421
S	85 （73.3）	85 （68.5）
L	31 （26.7）	39 （31.5）

Impulsive trait assessment	S/S genotype （n=60）	S/L genotype （n=50）	L/L genotype （n=10）	F value	P value
BIS-11 score/score	53.59±8.43	57.07±10.49	52.80±9.89	1.843	0.164
Attentional impulsiveness/score	12.94±3.03	13.81±5.33	11.30±3.56	1.608	0.205
Motor impulsiveness/score	17.28±3.50	17.95±3.95	18.60±4.60	0.699	0.499
Nonplanning impulsiveness/score	23.09±4.35	25.12±4.63	22.90±4.48	2.662	0.075