酪蛋白对高碘小鼠机体和甲状腺碘代谢水平的影响  

Effects of casein on iodine metabolism in body and thyroid of mice under excessive iodine

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作  者:李颖[1] 于钧[1] 张智毅[1] 张树彬[1] 刘守军[1] 苏晓辉[1] 叶永祥[1] 苏明[1] 赵馨[1] 刘艳[2] 

机构地区:[1]哈尔滨医科大学中国疾病预防控制中心地方病控制中心,150081 [2]哈尔滨医科大学中国疾病预防控制中心公共卫生学院卫生统计学教研室,150081

出  处:《中国地方病学杂志》2011年第6期620-622,共3页Chinese Jouranl of Endemiology

基  金:黑龙江省教育厅科学技术研究项目(11511216)

摘  要:目的观察酪蛋白摄入对高碘小鼠机体和甲状腺碘代谢水平的影响。方法采用2×3析因设计将小鼠分成6组,每组8只。饮水分为适碘(50μg/L)、高碘(600μg/L)2个水平;饲料分为3个水平:Ⅰ为普通饲料,Ⅱ、Ⅲ分别为加入酪蛋白10%、20%的普通饲料。喂养6、12个月后,酸消化砷铈催化分光光度法测定小鼠血清、尿液和甲状腺组织的含碘量。结果6个月时。50Ⅰ、50Ⅱ、50Ⅲ、600Ⅰ、600Ⅱ、600Ⅲ组小鼠血清含碘量分另4为(85.59±8.78)、(64.59±9.06)、(72.53±11.69)、(110.04±9.37)、(81.06±9.94)、(86.63±19.59)μg/L,甲状腺组织含碘量分别为(0.21±0.09)、(0.29±0.08)、(0.24±0.05)、(0.50±0.10)、(0.37±0.13)、(0.42±0.12)g/kg,尿碘中位数分别为87.5、68.1、105.5、746.5、828.3、1014.2μg/L。析因分析显示,碘和酪蛋白摄入水平明显影响血清含碘量(F值分别为27.95、18.52,P均〈0.05),但两者无交互作用(F=0.81,P〉0.05);甲状腺组织含碘量明显受碘摄入水平影响(F=31.35,P〈0.05).且酪蛋白与碘摄入水平间存在交互作用(F=3.34,P〈0.05)。12个月时,上述6组小鼠血清含碘量分别为(88.54±12.33)、(72.45±7.73)、(72.93±13.61)、(106.26±12.00)、(90.03±7.90)、(104.88±11.67)μg/L,甲状腺组织含碘量分别为(0.58±0.12)、(0.40±0.14)、(0.69±0.16)、(0.84±0.13)、(0.89±0.13)、(1.02-1-0.11)g/kg,尿碘中位数分别为104.8、121.5、102.7、829.1、1080.8、895.2μg/L。析因分析显示碘和酪蛋白摄入水平明显影响血清和甲状腺组织含碘量(F值分别为42.78、7.42和66.62、7.90,P均〈0.05),但两者无交互作用(F值分别为1.93、2.31,P均〉0.05)。结论�Objective To observe the effects of casein on iodine metabolism in blood, urine and thyroid of mice under excessive iodine. Methods A 2 by 3 factorial design was used in the experiment. The levels of iodine and casein were 50 and 600 μg/L in drinking water and 0( Ⅰ ), 10%( Ⅱ ), 20%( Ⅲ) in food, respectively. After six and twelve months, iodine content in serum, thyroid gland and urine was determined by arsenic-cerium catalyzed spectrophotometry. Results In six months, the levels of serum iodine in 50 Ⅰ , 50 Ⅱ, 50Ⅲ, 600 Ⅰ , 600 Ⅱ , and 600Ⅲ groups were (85.59 ± 8.78), (64.59 ± 9.06), (72.53 ± 11.69), (110.04 ± 9.37),(81.06 ± 9.94), (86.63 ± 19.59)μg/L, respectively; the levels of iodine content in thyroid gland were (0.21 ± 0.09), (0.29 ± 0.08), (0.24 ± 0.05), (0.50 ± 0.10), (0.37 ±0.13), (0.42 ±0.12)g/kg, respectively; the levels of urinary iodine median were 87.5, 68.1, 105.5, 746.5, 828.3, 1014.2 μg/L, respectively. The variance analysis results of factorial design showed iodine and casein significantly influenced the serum iodine level(F = 27.95, 18.52, all P 〈 0.05), however, there was no interaction between the two(F = 0.81, P 〉 0.05); iodine significantly influenced the iodine content in thyroid gland(F = 31.35, P 〈 0.05), the presence of iodine interacted with casein(F = 3.34, P 〈 0.05). In twelve months, the levels of serum iodine were (88.54 ± 12.33), (72.45 ± 7.73), (72.93 ± 13.61), (106.26 ±12.00), (90.03 ± 7.90), (104.88 ± 11.67)μg/L, respectively; the levels of iodine content in thyroid gland were (0.58 ±0.12), (0.40 ± 0.14), (0.69 ± 0.16), (0.84±0.13), (0.89 ± 0.13), (1.02 ±0.11)g/kg, respectively; the levels of urinary iodine median were 104.8, 121.5, 102.7, 829.1, 1080.8, 895.2μg/L, respectively. The variance analysis results of factorial design showed iodine and casein significantly influenced the iodine content in serum

关 键 词: 酪蛋白类 甲状腺 

分 类 号:R581[医药卫生—内分泌]

 

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