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目的了解福建省大城市点居民血清维生素A(VA)营养状况,为进一步实施营养干预提供科学依据。方法从2010年中国居民营养与健康状况监测的福州、厦门2大城市监测点的血样中,按VA测定采样要求随机抽取总计392人,采用高效液相色谱紫外检测法及内标定量法测定血清视黄醇水平并评价人群VA营养状况。结果福建省大城市点居民VA平均水平为(0.458±0.174)mg/L,不同性别、年龄VA平均水平差异均有统计学意义(P<0.01),福州、厦门2大城市点VA水平差异无统计学意义(P>0.05);调查的392名居民中,VA缺乏者占3.3%,边缘性VA缺乏者占14.3%,VA充足者占82.7%;不同年龄VA营养状况差异有统计学意义(χ2=23.40,P=0.001),VA缺乏和边缘性VA缺乏所占比例均随着年龄上升呈下降趋势,不同性别、城市点VA营养状况差异均无统计学意义(P>0.05)。结论福州、厦门2大城市点居民维生素A营养状况不容乐观,随年龄的增长,VA缺乏和边缘性VA缺乏所占比例随之下降。
Objective To understand the nutritional status of serum vitamin A (VA) in urban residents in large cities in Fujian Province and provide scientific basis for further implementation of nutritional intervention. Methods A total of 392 people were randomly selected from VA blood samples taken from monitoring points in Fuzhou and Xiamen of the two cities of Xiamen in 2010 to monitor nutrition and health status of Chinese residents. High performance liquid chromatography (HPLC) and internal standard quantification Retinol levels and assessment of VA nutritional status of the population. Results The average level of VA was (0.458 ± 0.174) mg / L in residents of big cities in Fujian Province, and there was significant difference in average level of VA among different sexes and ages (P <0.01). There was no significant difference in VA level between two cities in Fuzhou and Xiamen (P> 0.05). Among the 392 residents surveyed, VA deficiency accounted for 3.3%, marginal VA deficiency accounted for 14.3% and VA sufficient accounted for 82.7%. VA nutritional status of different ages had statistical significance (P> 0.05) χ2 = 23.40, P = 0.001). The proportion of VA deficiency and marginal VA deficiency decreased with age. There was no significant difference in VA nutritional status among different sexes and urban areas (P> 0.05). Conclusion The nutritional status of vitamin A in residents in Fuzhou and Xiamen cities is not optimistic. With the increase of age, the proportion of VA deficiency and VA deficiency decreases.