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Impaired Cold-Stimulated Supraclavicular Brown Adipose Tissue Activity in Young Boys With Obesity
Diabetes ( IF 7.7 ) Pub Date : 2022-03-16 , DOI: 10.2337/db21-0799
Basma A Ahmed 1, 2 , Nina Varah 1, 3 , Frank J Ong 1, 3 , Denis P Blondin 4 , Elizabeth Gunn 1, 3 , Norman B Konyer 5 , Nina P Singh 6 , Michael D Noseworthy 1, 5, 6, 7, 8 , Francois Haman 9 , Andre C Carpentier 10 , Zubin Punthakee 1, 3, 11 , Gregory R Steinberg 1, 2, 11 , Katherine M Morrison 1, 3
Affiliation  

Childhood obesity is a growing worldwide problem. In adults, lower cold-induced brown adipose tissue (BAT) activity is linked to obesity and metabolic dysfunction; this relationship remains uncertain in children. In this cross-sectional study, we compared cold-induced supraclavicular (SCV) BAT activity (percent change in proton density fat fraction [PDFF]) within the SCV region after 1 h of whole-body cold exposure (18°C), using MRI in 26 boys aged 8–10 years: 13 with normal BMI and 13 with overweight/obesity. Anthropometry, body composition, hepatic fat, visceral adipose tissue (VAT), and pre- and postcold PDFF of the subcutaneous adipose tissue (SAT) in the posterior neck region and the abdomen were measured. Boys with overweight/obesity had lower cold-induced percent decline in SCV PDFF compared with those with normal BMI (1.6 ± 0.8 vs. 4.7 ± 1.2%, P = 0.044). SCV PDFF declined significantly in boys with normal BMI (2.7 ± 0.7%, P = 0.003) but not in boys with overweight/obesity (1.1 ± 0.5%, P = 0.053). No cold-induced changes in the PDFF of either neck SAT (−0.89 ± 0.7%, P = 0.250, vs. 0.37 ± 0.3%, P = 0.230) or abdominal SAT (−0.39 ± 0.5%, P = 0.409, and 0.25 ± 0.2%, P = 0.139, for normal BMI and overweight/obesity groups, respectively) were seen. The cold-induced percent decline in SCV PDFF was inversely related to BMI (r = −0.39, P = 0.047), waist circumference (r = −0.48, P = 0.014), and VAT (r = −0.47, P = 0.014). Thus, in young boys, as in adults, BAT activity is lower in those with overweight/obesity, suggesting that restoring activity may be important for improving metabolic health.

中文翻译:

肥胖年轻男孩的冷刺激锁骨上棕色脂肪组织活性受损

儿童肥胖是一个日益严重的世界性问题。在成人中,寒冷诱导的棕色脂肪组织 (BAT) 活性降低与肥胖和代谢功能障碍有关;这种关系在儿童中仍然不确定。在这项横断面研究中,我们比较了全身冷暴露(18°C)1小时后SCV区域内冷诱导的锁骨上(SCV)BAT活性(质子密度脂肪分数[PDFF]的百分比变化),使用26 名 8-10 岁男孩的 MRI 检查:13 名 BMI 正常,13 名超重/肥胖。测量了后颈区和腹部皮下脂肪组织 (SAT) 的人体测量学、身体成分、肝脂肪、内脏脂肪组织 (VAT) 和冷前和冷后 PDFF。与 BMI 正常的男孩相比,超重/肥胖男孩的 SCV PDFF 下降百分比较低(1.6 ± 0.8 对 4.7 ± 1. 2%,P = 0.044)。SCV PDFF 在 BMI 正常的男孩中显着下降(2.7 ± 0.7%,P = 0.003),但在超重/肥胖的男孩中没有显着下降(1.1 ± 0.5%,P = 0.053)。颈部 SAT(-0.89 ± 0.7%,P = 0.250,对 0.37 ± 0.3%,P = 0.230)或腹部 SAT(-0.39 ± 0.5%,P = 0.409 和 0.25)的 PDFF 没有冷引起的变化± 0.2%,P = 0.139,分别为正常 BMI 和超重/肥胖组)。寒冷引起的 SCV PDFF 百分比下降与 BMI (r = -0.39, P = 0.047)、腰围 (r = -0.48, P = 0.014) 和增值税 (r = -0.47, P = 0.014) 呈负相关. 因此,在年轻男孩中,与成人一样,超重/肥胖者的 BAT 活性较低,这表明恢复活动可能对改善代谢健康很重要。003) 但在超重/肥胖的男孩中没有 (1.1 ± 0.5%, P = 0.053)。颈部 SAT(-0.89 ± 0.7%,P = 0.250,对 0.37 ± 0.3%,P = 0.230)或腹部 SAT(-0.39 ± 0.5%,P = 0.409 和 0.25)的 PDFF 没有冷引起的变化± 0.2%,P = 0.139,分别为正常 BMI 和超重/肥胖组)。寒冷引起的 SCV PDFF 百分比下降与 BMI (r = -0.39, P = 0.047)、腰围 (r = -0.48, P = 0.014) 和增值税 (r = -0.47, P = 0.014) 呈负相关. 因此,在年轻男孩中,与成人一样,超重/肥胖者的 BAT 活性较低,这表明恢复活动可能对改善代谢健康很重要。003) 但在超重/肥胖的男孩中没有 (1.1 ± 0.5%, P = 0.053)。颈部 SAT(-0.89 ± 0.7%,P = 0.250,对 0.37 ± 0.3%,P = 0.230)或腹部 SAT(-0.39 ± 0.5%,P = 0.409 和 0.25)的 PDFF 没有冷引起的变化± 0.2%,P = 0.139,分别为正常 BMI 和超重/肥胖组)。寒冷引起的 SCV PDFF 百分比下降与 BMI (r = -0.39, P = 0.047)、腰围 (r = -0.48, P = 0.014) 和增值税 (r = -0.47, P = 0.014) 呈负相关. 因此,在年轻男孩中,与成人一样,超重/肥胖者的 BAT 活性较低,这表明恢复活动可能对改善代谢健康很重要。对于正常 BMI 和超重/肥胖组,分别观察到 39 ± 0.5%,P = 0.409 和 0.25 ± 0.2%,P = 0.139)。寒冷引起的 SCV PDFF 百分比下降与 BMI (r = -0.39, P = 0.047)、腰围 (r = -0.48, P = 0.014) 和增值税 (r = -0.47, P = 0.014) 呈负相关. 因此,在年轻男孩中,与成人一样,超重/肥胖者的 BAT 活性较低,这表明恢复活动可能对改善代谢健康很重要。对于正常 BMI 和超重/肥胖组,分别观察到 39 ± 0.5%,P = 0.409 和 0.25 ± 0.2%,P = 0.139)。寒冷引起的 SCV PDFF 百分比下降与 BMI (r = -0.39, P = 0.047)、腰围 (r = -0.48, P = 0.014) 和增值税 (r = -0.47, P = 0.014) 呈负相关. 因此,在年轻男孩中,与成人一样,超重/肥胖者的 BAT 活性较低,这表明恢复活动可能对改善代谢健康很重要。
更新日期:2022-03-16
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