1.Genetic Correlation and Mendelian Randomization Analysis Revealed an Unidirectional Causal Relationship Between Left Caudal Middle Frontal Surface Area and Cigarette Consumption
Hongcheng XIE ; Anlin WANG ; Minglan YU ; Tingting WANG ; Xuemei LIANG ; Rongfang HE ; Chaohua HUANG ; Wei LEI ; Jing CHEN ; Youguo TAN ; Kezhi LIU ; Bo XIANG
Psychiatry Investigation 2025;22(3):279-286
Objective:
Previous studies have discovered a correlation between cigarette smoking and cortical thickness and surface area, but the causal relationship remains unclear. The objective of this investigation is to scrutinize the causal association between them.
Methods:
To derive summary statistics from a genome-wide association study (GWAS) on cortical thickness, surface area, and four smoking behaviors: 1) age of initiation of regular smoking (AgeSmk); 2) smoking initiation (SmkInit); 3) smoking cessation (SmkCes); 4) cigarettes per day (CigDay). Linkage disequilibrium score regression (LDSC) was employed to examine genetic association analysis. Furthermore, for traits with significant genetic associations, Mendelian randomization (MR) analyses were conducted.
Results:
The LDSC analysis revealed nominal genetic correlations between AgeSmk and right precentral surface area, left caudal anterior cingulate surface area, left cuneus surface area, left inferior parietal surface area, and right caudal anterior cingulate thickness, as well as between CigDay and left caudal middle frontal surface area, between SmkCes and left entorhinal thickness, and between SmkInit and left rostral anterior cingulate surface area, right rostral anterior cingulate thickness, and right superior frontal thickness (rg=-0.36–0.29, p<0.05). MR analysis showed a unidirectional causal association between left caudal middle frontal surface area and CigDay (βIVW=0.056, pBonferroni=2×10-4).
Conclusion
Left caudal middle frontal surface area has the potential to serve as a significant predictor of smoking behavior.
2.Construction and application of the criteria for drug utilization evaluation of low-dose rivaroxaban in atherosclerotic cardiovascular disease
Liang WU ; Wei WANG ; Yanghui XU ; Bo ZHU ; Yijun KE
China Pharmacy 2025;36(17):2176-2181
OBJECTIVE To construct and apply drug utilization evaluation (DUE) criteria for low-dose rivaroxaban in atherosclerotic cardiovascular disease (ASCVD) based on the dual pathway inhibition (DPI) antithrombotic therapy scheme, to promote clinical rational drug use. METHODS Based on the instructions and relevant guidelines of low-dose rivaroxaban (2.5 mg, bid), the Delphi method was used to establish the DUE criteria for low-dose rivaroxaban used in ASCVD. Weighted technique for order preference by similarity to an ideal solution method was used to determine the relative weights of each evaluation index, and the rationality of the filing medical records of discharged patients using low-dose rivaroxaban for ASCVD at Anqing Municipal Hospital from February 2024 to January 2025 was evaluated. RESULTS The established DUE criteria included 3 primary indicators (medication indications, medication process, medication results) and 11 secondary indicators (such as indications, contraindications, etc.). The higher weighted secondary indicators being contraindications (0.117 9) and indications (0.112 1). A total of 265 medical records were included for evaluation. The evaluation results showed that 192 cases (72.45%) had reasonable medical records, 69 cases (26.04%) had basic reasonable medical records, and 4 cases (1.51%) had unreasonable medical records; unreasonable types mainly included inappropriate combination therapy, inappropriate usage and dosage, inappropriate post- medication monitoring, and inappropriate drug switching, etc. CONCLUSIONS This study establishes a DUE criteria for low-dose rivaroxaban in ASCVD based on the DPI antithrombotic treatment regimen, and the evaluation results are intuitive, reliable, and quantifiable. The use of low-dose rivaroxaban in ASCVD patients in our hospital is relatively reasonable, but further management needs to be strengthened.
3.Genetic Correlation and Mendelian Randomization Analysis Revealed an Unidirectional Causal Relationship Between Left Caudal Middle Frontal Surface Area and Cigarette Consumption
Hongcheng XIE ; Anlin WANG ; Minglan YU ; Tingting WANG ; Xuemei LIANG ; Rongfang HE ; Chaohua HUANG ; Wei LEI ; Jing CHEN ; Youguo TAN ; Kezhi LIU ; Bo XIANG
Psychiatry Investigation 2025;22(3):279-286
Objective:
Previous studies have discovered a correlation between cigarette smoking and cortical thickness and surface area, but the causal relationship remains unclear. The objective of this investigation is to scrutinize the causal association between them.
Methods:
To derive summary statistics from a genome-wide association study (GWAS) on cortical thickness, surface area, and four smoking behaviors: 1) age of initiation of regular smoking (AgeSmk); 2) smoking initiation (SmkInit); 3) smoking cessation (SmkCes); 4) cigarettes per day (CigDay). Linkage disequilibrium score regression (LDSC) was employed to examine genetic association analysis. Furthermore, for traits with significant genetic associations, Mendelian randomization (MR) analyses were conducted.
Results:
The LDSC analysis revealed nominal genetic correlations between AgeSmk and right precentral surface area, left caudal anterior cingulate surface area, left cuneus surface area, left inferior parietal surface area, and right caudal anterior cingulate thickness, as well as between CigDay and left caudal middle frontal surface area, between SmkCes and left entorhinal thickness, and between SmkInit and left rostral anterior cingulate surface area, right rostral anterior cingulate thickness, and right superior frontal thickness (rg=-0.36–0.29, p<0.05). MR analysis showed a unidirectional causal association between left caudal middle frontal surface area and CigDay (βIVW=0.056, pBonferroni=2×10-4).
Conclusion
Left caudal middle frontal surface area has the potential to serve as a significant predictor of smoking behavior.
4.Genetic Correlation and Mendelian Randomization Analysis Revealed an Unidirectional Causal Relationship Between Left Caudal Middle Frontal Surface Area and Cigarette Consumption
Hongcheng XIE ; Anlin WANG ; Minglan YU ; Tingting WANG ; Xuemei LIANG ; Rongfang HE ; Chaohua HUANG ; Wei LEI ; Jing CHEN ; Youguo TAN ; Kezhi LIU ; Bo XIANG
Psychiatry Investigation 2025;22(3):279-286
Objective:
Previous studies have discovered a correlation between cigarette smoking and cortical thickness and surface area, but the causal relationship remains unclear. The objective of this investigation is to scrutinize the causal association between them.
Methods:
To derive summary statistics from a genome-wide association study (GWAS) on cortical thickness, surface area, and four smoking behaviors: 1) age of initiation of regular smoking (AgeSmk); 2) smoking initiation (SmkInit); 3) smoking cessation (SmkCes); 4) cigarettes per day (CigDay). Linkage disequilibrium score regression (LDSC) was employed to examine genetic association analysis. Furthermore, for traits with significant genetic associations, Mendelian randomization (MR) analyses were conducted.
Results:
The LDSC analysis revealed nominal genetic correlations between AgeSmk and right precentral surface area, left caudal anterior cingulate surface area, left cuneus surface area, left inferior parietal surface area, and right caudal anterior cingulate thickness, as well as between CigDay and left caudal middle frontal surface area, between SmkCes and left entorhinal thickness, and between SmkInit and left rostral anterior cingulate surface area, right rostral anterior cingulate thickness, and right superior frontal thickness (rg=-0.36–0.29, p<0.05). MR analysis showed a unidirectional causal association between left caudal middle frontal surface area and CigDay (βIVW=0.056, pBonferroni=2×10-4).
Conclusion
Left caudal middle frontal surface area has the potential to serve as a significant predictor of smoking behavior.
5.Association between possible sarcopenia and risk for frailty in middle-aged and elderly adults in China: a cohort study
Anqi JIANG ; Yue WEI ; Bo LIANG ; Lijun PEI
Chinese Journal of Epidemiology 2025;46(1):81-86
Objective:To assess the association between possible sarcopenia and the risk for frailty in middle-aged and elderly adults in China.Methods:A prospective cohort study design was used in this study. Data were from the China Health and Retirement Longitudinal Study during 2011-2018 and the baseline data in 2011, the follow up was conducted in 2013, 2015 and 2018, respectively. Frailty index was used to evaluate frailty status, and grip strength and repetitive sitting-up time were measured to detect possible sarcopenia. Cox proportional hazards regression model was used to estimate the association between possible sarcopenia and the risk for frailty in middle-aged and older adults.Results:In a 44 884 person-years follow-up, a total of 586 cases with frailty were recorded, and the incidence density of frailty was 13.06 per 1 000 person-year. The risk for frailty was also higher in those who were aged 60 years and above ( HR=2.05, 95% CI: 1.71-2.45), had a primary school education level or below ( HR=1.55, 95% CI: 1.29-1.85), had waist-to-height ratio ≥0.5 ( HR=1.39, 95% CI: 1.11-1.75) and had depression ( HR=1.52, 95% CI: 1.28-1.81). Drinking was associated with reduced risk for frailty ( HR=0.76, 95% CI: 0.62-0.94). The risk for frailty increased ( HR=1.73, 95% CI: 1.47-2.05) in those who might has possible sarcopenia. Conclusions:In middle-aged and elderly adults, those with possible sarcopenia, lower education level, central obesity and depression might be at high risk for frailty, and early interventions for high-risk population can be taken to slow the progression of frailty.
6.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
7.Diagnostic value of the vesical imaging-reporting and data system in bladder urothelial carcinoma with variant histology
Linjing JIANG ; Xiao YANG ; Lingkai CAI ; Qiang CAO ; Wei TIAN ; Xiaotong LIU ; Bo LIANG ; Meihua JIANG ; Gongcheng WANG ; Qiang SHAO ; Hongliang QUE ; Xuping JIANG ; Qiang LYU
Chinese Journal of Urology 2025;46(10):751-758
Objective:To evaluate the diagnostic value of the vesical imaging-reporting and data system(VI-RADS)for determining muscle invasion in variant histology urothelial carcinoma(VUC)of the bladder.Methods:A retrospective analysis was performed on the pathological and imaging data of 518 bladder cancer patients admitted to Jiangsu Province Hospital between January 2013 and January 2023. Patients were stratified into pure urothelial carcinoma(PUC)group( n = 457)and variant urothelial carcinoma(VUC)group( n = 61)based on the presence of histological variants. In the PUC group,there were 390 males(85.3%)and 67 females(14.7%),with a mean age of(66.9 ± 11.2)years. Tumor characteristics included maximum diameter ≥ 30 mm in 149(32.6%),< 30 mm in 308(67.4%),multiple tumors in 147(32.2%),solitary in 310(67.8%),pedunculated morphology in 143(31.3%)and non-pedunculated in 314(68.7%). Histological grading identified high-grade tumors in 319 patients(69.8%)and low-grade tumors in 138(30.2%). Pathological stage distribution included 191 of T a(41.8%),127 of T 1(27.8%),76 of T 2(16.6%),47 of T 3(10.3%),and 16 of T 4(3.5%)patients. The VUC group included 61 patients,comprising 51 males(83.6%)and 10 females(16.4%),with a mean age of(65.8 ± 11.4)years. Tumor characteristics were maximum diameter ≥ 30 mm in 38(62.3%),< 30 mm in 23(37.7%),multiple tumors in 16(26.2%),solitary in 45(73.8%),pedunculated morphology in 11(18.0%)and non-pedunculated in 50(82.0%). Histological grading identified high-grade tumors in 59 patients(96.7%)and low-grade tumors in 2(3.3%). Pathological stage distribution included 3 of T a(4.9%),15 of T 1(24.6%),15 of T 2(24.6%),20 of T 3(32.8%),and 8 of T 4(13.1%)patients. No statistically significant differences were found between the two groups in gender,age,or tumor multiplicity( P > 0.05). Statistically significant differences were found in pathological grade,pathological stage,maximum tumor diameter,and pedunculated morphology( P < 0.05). Furthermore,an external validation cohort of 278 bladder cancer patients treated between February 2023 and February 2024 from multiple centers(Jiangsu Provincial People’s Hospital,The First Affiliated Hospital of Zhengzhou University,Union Hospital Tongji Medical College Huazhong University of Science and Technology,Jiangsu Provincial Hospital of Traditional Chinese Medicine,Suzhou Municipal Hospital,Huaian First People’s Hospital,Yixing People’s Hospital)was retrospectively analyzed to externally validate the performance of VI-RADS scoring in predicting muscle invasion of VUC. This cohort included a PUC subgroup of 241 patients,comprising 196 males(81.3%)and 45 females(18.7%),with a mean age of(68.0 ± 10.7)years. Tumor characteristics were maximum diameter ≥ 30 mm in 85(35.3%),< 30 mm in 156(64.7%),multiple tumors in 65(27.0%),solitary in 176(73.0%),pedunculated morphology in 76(31.5%)and non-pedunculated in 165(68.5%). Histological grading identified high-grade tumors in 175 patients(72.6%)and low-grade tumors in 66(27.4%). Pathological staging comprised 107 patients of T a(44.4%),78 of T 1(32.4%),22 of T 2(9.1%),22 of T 3(9.1%),and 12 of T 4(5.0%). The VUC subgroup consisted of 37 patients,comprising 29 males(78.4%)and 8 females(21.6%),with a mean age of(70.5 ± 9.5)years. Tumor characteristics were maximum diameter ≥ 30 mm in 23(62.2%),< 30 mm in 14(37.8%),multiple tumors in 9(24.3%),solitary in 28(75.7%),pedunculated morphology in 7(18.9%)and non-pedunculated in 30(81.1%). Histological grading identified high-grade tumors in 36 patients(97.3%)and low-grade tumors in 1(2.7%). Pathological staging comprised 1 patient of T a(2.7%),9 of T 1(24.3%),7 of T 2(18.9%),19 of T 3(51.4%),and 1 of T 4(2.7%). In this validation cohort,no significant differences were found in gender,age,tumor multiplicity,or pedunculated morphology between the PUC and VUC subgroups( P > 0.05). Significant differences were observed in pathological grade,pathological stage,and maximum tumor diameter( P < 0.05). Three radiologists independently reviewed and scored the multiparametric MRI(mp-MRI)in a blinded manner. Inter-reader agreement was assessed using the weighted kappa statistic. Differences in variables between the two groups were compared using t-tests,chi-square tests,or Fisher’s exact test. The diagnostic performance of VI-RADS for muscle invasion in VUC and PUC was comprehensively evaluated using receiver operating characteristic(ROC)curves,the area under the curve(AUC),and cut-off values determined by the Youden’s index. The DeLong test was used to assess whether the diagnostic performance of VI-RADS differed between VUC and PUC. Results:In the retrospective single-center cohort,the AUC of VI-RADS for assessing muscle invasion was 0.895(95% CI 0.864?0.922)in the PUC group,with a cut-off value of > 3,and the AUC was 0.896(95% CI 0.791-0.960)in the VUC group,with a cut-off value of > 3. The difference between the two groups was not statistically significant( P = 0.986). Using a VI-RADS score > 3 as the cut-off value,the accuracy,sensitivity,specificity,positive predictive value(PPV),and negative predictive value(NPV)for diagnosing muscle invasion status in the PUC group were 85.8%(392/457),70.5%(98/139),92.5%(294/318),80.3%(98/122),and 87.8%(294/335),respectively. The corresponding values for the VUC group were 82.0%(50/61),76.7%(33/43),94.4%(17/18),97.1%(33/34),and 63.0%(17/27).In the retrospective multicenter cohort,the AUC of VI-RADS for assessing muscle invasion was 0.891(95% CI 0.845?0.927)in the PUC group,with a cut-off value of > 2,and the AUC was 0.898(95% CI 0.754?0.973)in the VUC group,with a cut-off value of > 3. The difference between the two groups was not statistically significant( P = 0.897). Using a VI-RADS score > 3 as the cut-off value,the accuracy,sensitivity,specificity,PPV,and NPV for diagnosing muscle invasion status in the PUC group were 85.9%(207/241),58.9%(33/56),94.1%(174/185),75.0%(33/44),and 88.3%(174/197),respectively. The corresponding values for the VUC group were 81.1%(30/37),77.8%(21/27),90.0%(9/10),95.5%(21/22),and 60.0%(9/15).In the single-center cohort,the Kappa values for inter-reader agreement in assessing muscle invasion status using VI-RADS were 0.881( P < 0.01)for the PUC group and 0.941( P < 0.01)for the VUC group among the three readers. In the multicenter cohort,the Kappa values were 0.858( P < 0.01)for the PUC group and 0.838( P < 0.01)for the VUC group. Conclusions:VI-RADS demonstrates similarly high diagnostic performance for assessing muscle invasion in both PUC and VUC,which is applicable for diagnosing muscle invasion status in VUC,and shows good inter-reader agreement.
8.Correlation between differences in starch gelatinization, water distribution, and terpenoid content during steaming process of Curcuma kwangsiensis root tubers by multivariate statistical analysis.
Yan LIANG ; Meng-Na YANG ; Xiao-Li QIN ; Zhi-Yong ZHANG ; Zhong-Nan SU ; Hou-Kang CAO ; Ke-Feng ZHANG ; Ming-Wei WANG ; Bo LI ; Shuo LI
China Journal of Chinese Materia Medica 2025;50(10):2684-2694
To elucidate the mechanism by which steaming affects the quality of Curcuma kwangsiensis root tubers, methods such as LSCM, RVA, dual-wavelength spectrophotometry, LF-NMR, and LC-MS were employed to qualitatively and quantitatively detect changes in starch gelatinization characteristics, water distribution, and material composition of C. kwangsiensis root tubers under different steaming durations. Based on multivariate statistical analysis, the correlation between differences in gelatinization parameters, water distribution, and terpenoid material composition was investigated. The results indicate that steaming affects both starch gelatinization and water distribution in C. kwangsiensis. During the steaming process, transformations occur between amylose and amylopectin, as well as between semi-bound water and free water. After 60 min of steaming, starch gelatinization and water distribution reached an equilibrium state. The content of amylopectin, the amylose-to-amylopectin ratio, and parameters such as gelatinization temperature, viscosity, breakdown value, and setback value were significantly correlated(P≤0.05). Additionally, the amylose-to-amylopectin ratio was significantly correlated with total free water and total water content(P≤0.05). Steaming induced differences in the material composition of C. kwangsiensis root tubers. Clustering of primary metabolites in the OPLS-DA model was distinct, while secondary metabolites were classified into 9 clusters using the K-means clustering algorithm. Differential terpenoid metabolites such as(-)-α-curcumene were significantly correlated with zerumbone, retinal, and all-trans-retinoic acid(P<0.05). Curcumenol was significantly correlated with isoalantolactone and ursolic acid(P<0.05), while all-trans-retinoic acid was significantly correlated with both zerumbone and retinal(P<0.05). Alpha-tocotrienol exhibited a significant correlation with retinal and all-trans-retinoic acid(P<0.05). Amylose was extremely significantly correlated with(-)-α-curcumene, curcumenol, zerumbone, retinal, all-trans-retinoic acid, and α-tocotrienol(P<0.05). Amylopectin was significantly correlated with zerumbone(P<0.05) and extremely significantly correlated with(-)-α-curcumene, curcumenol, zerumbone, retinal, all-trans-retinoic acid, and 9-cis-retinoic acid(P<0.01). The results provide scientific evidence for elucidating the mechanism of quality formation of steamed C. kwangsiensis root tubers as a medicinal material.
Curcuma/chemistry*
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Starch/chemistry*
;
Multivariate Analysis
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Water/chemistry*
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Terpenes/analysis*
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Plant Roots/chemistry*
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Plant Tubers/chemistry*
;
Drugs, Chinese Herbal/chemistry*
9.The construction and application of a trauma limb salvage map in Shaanxi province.
Meng WANG ; Jian-Min LIU ; Xing-Bo DANG ; Long-Yang MA ; Gong-Liang DU ; Wei HU
Chinese Journal of Traumatology 2025;28(4):235-240
Trauma is an important cause of death in young- and middle-aged people. Trauma is comprehensive and includes many surgical specialties, and the surgical techniques of these specialties have long been mature. To reduce the mortality and disability rate of trauma patients, it is necessary to improve trauma management. Trauma has attracted attention in China and trauma treatment and care developed rapidly in recent years. To decrease traumatic mortality and disability rates, our team is committed to building an efficient trauma system in Shaanxi province and has successfully developed a trauma limb salvage map to address the high rates of amputation and disability in patients with limb injuries. This article elaborates on the construction experience of a trauma limb salvage map and its application details in Shaanxi province of China.
Humans
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China
;
Limb Salvage/methods*
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Wounds and Injuries/surgery*
;
Male
;
Extremities/injuries*
;
Adult
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Amputation, Surgical
;
Middle Aged
;
Female
10.Genetic Correlation and Mendelian Randomization Analysis Revealed an Unidirectional Causal Relationship Between Left Caudal Middle Frontal Surface Area and Cigarette Consumption
Hongcheng XIE ; Anlin WANG ; Minglan YU ; Tingting WANG ; Xuemei LIANG ; Rongfang HE ; Chaohua HUANG ; Wei LEI ; Jing CHEN ; Youguo TAN ; Kezhi LIU ; Bo XIANG
Psychiatry Investigation 2025;22(3):279-286
Objective:
Previous studies have discovered a correlation between cigarette smoking and cortical thickness and surface area, but the causal relationship remains unclear. The objective of this investigation is to scrutinize the causal association between them.
Methods:
To derive summary statistics from a genome-wide association study (GWAS) on cortical thickness, surface area, and four smoking behaviors: 1) age of initiation of regular smoking (AgeSmk); 2) smoking initiation (SmkInit); 3) smoking cessation (SmkCes); 4) cigarettes per day (CigDay). Linkage disequilibrium score regression (LDSC) was employed to examine genetic association analysis. Furthermore, for traits with significant genetic associations, Mendelian randomization (MR) analyses were conducted.
Results:
The LDSC analysis revealed nominal genetic correlations between AgeSmk and right precentral surface area, left caudal anterior cingulate surface area, left cuneus surface area, left inferior parietal surface area, and right caudal anterior cingulate thickness, as well as between CigDay and left caudal middle frontal surface area, between SmkCes and left entorhinal thickness, and between SmkInit and left rostral anterior cingulate surface area, right rostral anterior cingulate thickness, and right superior frontal thickness (rg=-0.36–0.29, p<0.05). MR analysis showed a unidirectional causal association between left caudal middle frontal surface area and CigDay (βIVW=0.056, pBonferroni=2×10-4).
Conclusion
Left caudal middle frontal surface area has the potential to serve as a significant predictor of smoking behavior.

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