摘要
目的 通过实验验证一种自制热稳定性增稠剂对于标准浓度的肠内营养液质构特性的影响,以及其在改善吞咽障碍方面的应用效果。方法 (1)取不同剂量梯度自制增稠剂(1.0 g、1.5 g、2.0 g、2.5 g、3.0 g)及常见的3种市售增稠剂,所有增稠剂中均加入23.391 g某款全营养配方粉溶于85 mL纯水,各配成100 mL标准浓度营养液。使用质构仪测量在不同温度梯度下(20℃、40℃、60℃、80℃)4种增稠后营养液的质构参数(内聚性、黏性、稠度、硬度),比较其热稳定性。(2)通过会厌切除术制造吞咽障碍大鼠模型,探究该增稠剂对吞咽障碍大鼠肺部组织损伤评分和炎性因子水平。取吞咽障碍大鼠模型分为待测干预组、阳性对照组、阴性对照组,并设立空白对照组(不进行手术,禁食1 d后正常饲养),每组15只。大鼠术后均禁食1 d后,待测干预组喂食自制增稠剂增稠的标准浓度营养液,阳性对照组喂食市售品3增稠的标准浓度营养液,阴性对照组正常饲养。4组均持续喂养2周,食物均加入食品级果绿色素。观察大鼠一般情况并记录体质量与食量。两周后,称重计算肺组织脏器系数,以常规HE染色评估脏器情况,根据Mikawa表评分计算肺组织损伤病理评分;收集血液上清检测血清总蛋白、白蛋白检测大鼠营养状况;实时定量聚合酶链反应(RT-qPCR)法检测肺组织中的白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)基因表达;ELISA法检测肺组织、肺组织混悬液和血清中的IL-6、TNF-α蛋白表达;计算误吸发生率。结果 (1)在1.0~3.0 g的剂量范围内,20~80℃下,自制增稠剂增稠后的待测样品内聚性的热稳定性优于3种市售品,差异有统计学意义(P<0.01),黏性、硬度的热稳定性与3种市售品的差异无统计学意义。市售品1稠度热稳定性最优,待测样品和市售品2次之,市售品3最差,差异有统计学意义(P<0.01)。(2)动物实验结果示,阳性对照组�
Objective To experimentally validate the effects of a self-developed heat-stable thickening agent on the textual characteristics of enteral nutrition solutions of standard concentration and its applicability in improving dysphagia.Methods A gradient of different doses of the self-developed thickening agent(1.0 g,1.5 g,2.0 g,2.5 g,and 3.0 g)and three commonly used commercial thickeners were mixed with 23.391 g of a complete nutrition formula powder dissolved in 85 mL of purified water to prepare 100 mL standard concentration nutrition solutions.The textual parameters(cohesiveness,viscosity,thickness,and hardness)of these nutrition solutions were measured using a texture analyzer at various temperature gradients(20℃,40℃,60℃,and 80℃)to compare their thermal stability.A dysphagia rat model was created via epiglottectomy to explore the effects of the thickener on lung tissue damage scores and levels of inflammatory markers.The rats were divided into a test intervention group,a positive control group,a negative control group,and a blank control group(no surgery and normal feeding after fasting for one day),with 15 rats in each group.After fasting for one day post-surgery,the test intervention group was fed with the standard concentration nutrition solution thickened with the self-developed thickener,while the positive control group was given a standard concentration nutrition solution thickened with product 3,and the negative control group was fed a normal diet.All groups were fed for two weeks with food dyed with food-grade green dye.General conditions,body mass,and food intake were observed and recorded.After two weeks,abdominal aorta blood was collected,and heart,liver,spleen,lung,and kidney tissues were harvested and weighed to calculate the lung tissue organ coefficient.The organ conditions were evaluated using routine H&E staining,and lung damage was semi-quantitatively analyzed based on the Mikawa scoring criteria.Blood supernatants were collected to measure the total serum protein and albumin levels to
作者
陈沐熙
商正云
程懿
李可
段飞霞
胡雯
CHEN Muxi;SHANG Zhengyun;CHENG Yi;LI Ke;DUAN Feixia;HU Wen(Department of Clinical Nutrition,West China Hospital/West China School of Medicine,Sichuan University,Chengdu 610041,China)
出处
《四川大学学报（医学版）》
CAS
CSCD
北大核心
2024年第3期769-776,共8页
Journal of Sichuan University(Medical Sciences)
基金
四川省科技计划重点研发项目(No.2021YFS0176)资助。
关键词
复配增稠剂
质构特性
吞咽障碍
热稳定性
吞咽安全性
Composite thickener
Textual characteristics
Dysphagia
Heat stability
Swallowing safety
