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苦玄参提取物减轻烧伤脓毒症模型小鼠T细胞功能障碍的机制研究
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作者 王维 章文齐 《国际医药卫生导报》 2024年第12期1955-1960,共6页
目的探讨苦玄参提取物(PFE)通过调节酪氨酸激酶-3配体(Flt3L)对烧伤脓毒症模型小鼠T细胞功能的调控作用。方法研究于2022年7月至2023年4月在安康市中医医院动物实验中心进行。按照随机数字表法将72只SPF雄性C57小鼠[体质量为21~25(22... 目的探讨苦玄参提取物(PFE)通过调节酪氨酸激酶-3配体(Flt3L)对烧伤脓毒症模型小鼠T细胞功能的调控作用。方法研究于2022年7月至2023年4月在安康市中医医院动物实验中心进行。按照随机数字表法将72只SPF雄性C57小鼠[体质量为21~25(22±2)g,10周龄]分为6组,烧伤组、模型组和PFE低、中、高剂量组及阳性组。PFE低、中、高剂量组模型制备结束后次日分别灌胃0.5 g/kg、1.0 g/kg、2.0 g/kg PFE,连续给药1周;阳性组:模型制备结束后次日,皮下注射10μg Flt3L,连续注射9 d。给药结束后1、3、5 d分别检测背部皮肤荧光强度;给药后检测血清白细胞介素(IL)-6、IL-1β、肿瘤坏死因子α(TNF-α)水平、外周血T淋巴细胞增殖活性、脾脏T淋巴亚群变化、皮下、肺、脾脏组织病理学变化及IL-2、IL-4、干扰素-γ(IFN-γ)、Flt3L蛋白表达水平。统计学方法采用单因素方差分析和SNK-q检验。结果模型组创面细菌荧光强度、IL-6[(59.44±5.41)μg/L比(23.47±3.29)μg/L]、IL-1β[(80.47±6.83)μg/L比(32.74±4.36)μg/L]、TNF-α[(12.33±1.15)μg/L比(4.76±0.97)μg/L]水平、创面组织、肺组织、脾组织病理评分、IL-2、IL-4、IFN-γ蛋白表达、CD8^(+)T细胞比例[(65.33±5.68)%比(26.72±6.75)%]均高于烧伤组,T淋巴细胞增殖活性、CD3^(+)T细胞比例[(34.55±3.29)%比(64.49±9.33)%]、CD4^(+)T细胞比例[(16.71±3.49)%比(48.18±7.36)%]、CD4^(+)/CD8^(+)[(0.26±0.06)比(1.81±0.35)]均低于烧伤组(均P<0.05)。与模型组相比,PFE低、中、高剂量组、阳性组创面细菌荧光强度较弱;IL-6、IL-1β、TNF-α水平、创面组织、肺组织、脾组织病理评分、IL-2、IL-4、IFN-γ蛋白表达、CD8^(+)T细胞比例均低于模型组,T淋巴细胞增殖活性、CD3^(+)T、CD4^(+)T、CD4^(+)/CD8^(+)均高于模型组,具有剂量依赖性(均P<0.05)。结论PFE可降低感染创面细菌含量,降低炎症反应以及器官损伤,其机制可能与上调Flt3L、促进T淋巴细胞活性� 展开更多
关键词 脓毒症 烧伤 苦玄参提取物 酪氨酸激酶-3配体 动物实验
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Effects of Dietary Picria felterrae Lour Extracts on Serum Biochemical Indexes and Immune Function of Guangxi Partridge Chickens
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作者 Yang Cui Bi Xianda +9 位作者 Hu Tingjun Yang Jian Huang Hongye Tan Honglian Peng Jianbo Luo Wenjuan Li Lu Li Chunjie Liao Yuying Yang Jiahuang 《Animal Husbandry and Feed Science》 CAS 2018年第1期52-57,共6页
[Objective] This trial was to investigate the effect of dietary Picria felterrae Lour extracts on serum biochemical indexes and immune function of Guangxi Partridge chickens. [Method] Totally 500 individuals of 1-day-... [Objective] This trial was to investigate the effect of dietary Picria felterrae Lour extracts on serum biochemical indexes and immune function of Guangxi Partridge chickens. [Method] Totally 500 individuals of 1-day-old Guangxi Partridge chickens were randomly divided into five groups, five replicates each group and 20 chicks each replicate. Groups A, B and C were treatment groups supplemented with 0.70%, 0.35% and0.175% P. felterrae extracts in the basal diet, respectively; group D was a medical control group supplemented with 0.01% colistin sulfate premix in the basal diet; and group E was a control group with basal diet. Serum samples were collected from 10 chickens in each group at 21, 35 and 49 days of age, to analyze the biochemical and immune indexes. [Result] It had no significant impact on serum TP and GLU contents of chickens by adding different levels of P. felterrae extracts in the basal diet(P 〉0.05). However, at 21 and 35 days of age, the TBILI content of chickens in groups A, B and C were extremely lower or significantly lower than that in group E( P〈0.01; P〈0.05). At 35 days of age, the serum AKP activities in groups A, B and C were extremely higher than that in group E(P〈0.01), and the serum GOT activities at 21 and 35 days of age in group C were significantly higher than that in group E(P〈0.05). At 49 days of age, the serum Ig G content in groups A, B and C and the IL-2 content in group B and group C were significantly lower or extremely lower than that in group E( P〈0.05; P〈0.01); the T-AOC content in group B was significantly higher than that in group E(P〈0.05); the GSH content in groups A, B and C were significantly higher than that in group E( P〈0.05). Adding different levels of P. felterrae extracts in the diet significantly decreased the TBILI content, reduced the Ig G, IL-2 and IL-6 contents, and improved the AKP and GOT activities and the T-AOC and GSH contents of Guangxi Partridge chicken. [Conclusion] Adding 0.35% P. felterrae extracts in 展开更多
关键词 picria felterrae Lour extracts Guangxi Partridge chicken Serum biochemical index Immune index Antioxidant ability
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