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HUA in euthyroid individuals with essential hypertension(EH). Methods Two hundred and sixty-seven euthyroid patients
with EH were retrospectively selected from Department of Cardiology,Xianyang Hospital of Yan'an University from January
2019 to December 2020,including 101 with HUA(combined HUA group)and 166 without HUA (non-HUA group). The
general demographic data and laboratory examination indices of the two groups were compared,including gender,age,body
mass index(BMI),systolic blood pressure(SBP),diastolic blood pressure(DBP),smoking history,drinking history,
total cholesterol(TC),triacylglycerol(TG),high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein
cholesterol(LDL-C),serum creatinine(Scr),SUA,thyroid-stimulating hormone(TSH),free triiodothyronine(FT 3 ),
and free thyroxine(FT 4 ). Multivariate Logistic regression analysis was used to explore factors associated with HUA. Pearson
correlation was used to examine the correlation between thyroid hormone level and SUA level. Results There were significant
intergroup differences in gender ratio,mean age,BMI,and DBP,as well as prevalence of smoking history and drinking history
(P<0.05). Moreover,the mean levels of TC,TG,LDL-C,Scr and SUA were also significantly different in the two groups
(P<0.05). In particular,the mean level of FT 3 in combined HUA group was significantly higher(t=-5.066,P<0.05).
Multivariate Logistic regression analysis demonstrated that male〔OR=2.843,95%CI(1.121,7.215),P=0.028〕,higher
BMI〔OR=1.126,95%CI(1.020,1.234),P=0.018〕,TG〔OR=1.824,95%CI(1.300,2.560),P=0.001〕,LDL-C
〔OR=2.804,95%CI(1.157,6.795),P=0.022〕,Scr〔OR=1.071,95%CI(1.041,1.102),P<0.001〕and FT 3
〔OR=2.297,95%CI(1.326,3.977),P=0.003〕were associated with increased risk of HUA. Advanced age〔OR=0.959,
95%CI(0.931,0.989),P=0.007〕was decreased risk of HUA. Pearson correlation analysis revealed that the level of FT 3 was
positively correlated with SUA(r=0.327,P<0.001). Conclusion Being male,high BMI,elevated TG,LDL-C,Scr and
FT 3 levels may be risk factors for HUA in euthyroid patients with EH. Advanced age may be protective factor for HUA in euthyroid
patients with EH. As FT 3 level is positively correlated with SUA in these patients,those with elevated serum FT 3 level are prone to
HUA,which should be paid attention by clinicians.
【Key words】 Essential hypertension;Hyperuricemia;Thyroid hormones;Triiodothyronine;Thyroid function;
Correlation study
尿酸(uric acid,UA)是嘌呤化合物的最终分解产物, 1 资料与方法
由肝脏产生,并由肾脏(65%~75%)和胃肠道(25%~35%) 1.1 研究对象 回顾性选取 2019 年 1 月至 2020 年 12
排出 [1-2] 。当 UA 生成增多和 / 或排泄减少时,血尿酸 月延安大学咸阳医院心血管内科收治的 267 例甲状腺功
(serum uric acid,SUA)水平升高,导致高尿酸血症 能正常的 EH 患者为研究对象,根据是否合并 HUA 分
(hyperuricemia,HUA) [3] 。尽管 HUA 不属于致命性 为非 HUA 组(166 例)与合并 HUA 组(101 例)。纳
疾病,但其作为常见的代谢性疾病,与心血管疾病、慢 入标准:(1)符合 EH 诊断标准 [13] ;(2)甲状腺功
性肾衰竭发生、发展密切相关 [4-5] 。研究发现我国原发 能正常;(3)年龄≥ 18 岁。排除标准:(1)继发性
性高血压(essential hypertension,EH)患者中 HUA 患 高血压患者;(2)患有严重的心脑血管疾病,如冠心病、
病率较高 [6] 。相关文献指出,近 90% 的青少年高血压 心力衰竭、心律失常、先天性心脏病、脑卒中等患者;
患者中 SUA 水平升高,并且 SUA 水平与收缩压(SBP) (3)合并糖尿病患者;(4)患有严重感染、免疫系统
之间呈正相关 [7] 。因此,及早识别 EH 患者发生 HUA 疾病、恶性肿瘤、血液系统疾病等患者;(5)近期服
的危险因素并对其进行相关干预治疗至关重要。一直以 用过含噻嗪类利尿剂、激素类药物、降 UA 药物等影响
来,甲状腺功能障碍被认为与 HUA 密切相关 [8] 。甲状 UA 水平的患者;(6)既往有甲状腺功能异常病史者;
腺功能亢进与减退的患者中均发现 SUA 水平升高 [9-10] 。 (7)近半年内服用过影响甲状腺功能的药物(如胺碘酮、
并且有研究表明外源性补充甲状腺素能够降低亚临床甲 碘剂、苯妥英钠等)者;(8)妊娠期妇女。本研究已
状腺功能减退患者 SUA 水平 [11] ,提示机体甲状腺激素 通过延安大学咸阳医院医学伦理委员会批准(YDXY-
水平与 SUA 水平相关。近年来,有学者研究无明显甲 KY-2021-011),研究对象均知情同意。
状腺功能障碍的受试者中甲状腺激素水平与 HUA 的相 1.2 研究方法
关性 [12] 。但目前在甲状腺功能正常的 EH 患者中,甲 1.2.1 一般资料 收集患者的一般资料,包括性别、年
状腺激素水平与 HUA 患病风险的相关研究鲜有报道。 龄、体质指数(BMI)、血压(用台式血压计连续测量
因此,本研究选取甲状腺功能正常的 EH 患者,通过比 两次的右上肢血压平均值)、吸烟史(香烟 >25 支 /d)、
较非HUA与合并HUA患者血清甲状腺激素水平的差异, 饮酒史(酒精量:男性 >140 g/ 周、女性 >70 g/ 周)。
分析甲状腺激素水平与 HUA 患病风险的相关性。 1.2.2 实验室检查指标 采用全自动生化分析仪(日本