实验动物与比较医学

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SD大鼠90 d喂养试验的历史背景数据

秦超, 李双星, 赵婷婷, 蒋晨晨, 赵晶, 杨艳伟, 林志, 王三龙, 文海若()   

  1. 中国食品药品检定研究院国家药物安全评价监测中心, 药物非临床安全评价研究北京市重点实验室, 北京 100176
  • 发布日期:2025-05-21
  • 通讯作者: 文海若(1981—),女,博士,研究员,研究方向:药物安全性评价。E-mail: wenhairuo@nifdc.org.cn。ORCID: 0000-0002-7648-1088
  • 作者简介:秦 超(1983—),男,本科,主管技师,研究方向:动物实验技术。E-mail: 123642651@qq.com
    李双星(1995—),男,硕士,助理研究员,研究方向:毒性病理。E-mail: lishuangxing@nifdc.org.cn
  • 基金资助:
    国家十三五“重大新药创制”专项课题“新型体外评价模型及毒性评价标志物等关键技术研究”(2018ZX09201017);药品监管科学全国重点实验室课题“药品杂质遗传毒性评价新技术和生物标志物研究”(2023SKLDRS0128);中检院中青年发展研究基金-细胞治疗产品肿瘤杀伤的新型体外药效评价模型的建立及应用(2023C1)

Historical Background Data of 90-day Feeding Study in SD Rats

QIN Chao, LI Shuangxing, ZHAO Tingting, JIANG Chenchen, ZHAO Jing, YANG Yanwei, LIN Zhi, WANG Sanlong, WEN Hairuo()   

  1. Beijing Key Laboratory, National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Key Laboratory of Beijing for Nonclinical Safety Evaluation Research of Drugs, Beijing 100176, China

摘要:

目的 为保证研究数据的可靠性,建立SD大鼠90 d喂养试验的历史背景数据。 方法 本研究汇总了2020—2023年国家药物安全评价监测中心的6个独立的SD大鼠90 d喂养试验中空白对照组动物(120只SPF级SD大鼠,雌雄各半,仅给予普通鼠全价颗粒饲料)的背景数据。检疫期结束后,动物继续观察90 d,之后腹腔注射舒泰麻醉、取血、处死并解剖。通过分析空白对照组数据,建立了SD大鼠相关背景数据库。 结果 雄性和雌性大鼠的平均体重均稳步增长,雄性大鼠体重增长幅度更为明显。90 d内雄性和雌性大鼠平均体重分别增长至500 g和300 g以上。3周后,雄性大鼠每日平均摄食量基本稳定在25~28 g/只,雌性大鼠每日平均摄食量基本稳定在16~19 g/只。所有动物的食物利用率自实验第1周开始逐渐下降。白细胞分类计数结果中,雌性与雄性WBC、Neut、Lymph、Mono的数值有统计学差异(P<0.001),但%Neut、%Lymph、%Mono两性别无统计学差异(P>0.05)。雄性动物的平均RBC、HGB、HCT、PLT、PT和APTT高于雌性(P<0.05)。雄性大鼠平均ALT、AST、ALP、CK、LDH、GLU、TG数值高于雌性(P<0.05)。雄性动物的尿pH值范围在5.0~8.5;雌性动物尿pH值范围在6.5~9.0。绝大多数雄性动物的尿比重低于1.020,绝大多数雌性动物尿比重低于1.015。雄性动物各脏器(肾上腺、生殖器官除外)称重均高于雌性(P<0.001),而雌性动物的脏体比(肾脏、生殖器官除外)高于雄性(P<0.001)。 结论 总结了国家药物安全评价监测中心6项90 d喂养试验中未给药对照组SPF级SD大鼠的体重、摄食量、血液学、血清生化各项指标的背景参考值范围,为相关研究提供重要的参考数据,梳理了动物的背景性和自发的组织病理学改变。有助于研究的规范化和标准化,及异常结果的评判分析。

关键词: SD大鼠, 90 d喂养试验, 历史背景数据

Abstract:

Objective To establish a historical background database of SD rats' 90-day feeding study data to ensure the reliability of research data. Methods Summarized the blank control group data from six independent SD rat 90-day feeding study conducted at the National Institutes for Food and Drug Control from 2020 to 2023. A total of 120 SPF-grade SD rats (half male and half female) were used in the study, and they were only fed with a complete pelleted feed for mice and rats. After the quarantine period, the animals were observed for 90 days, and then anesthetized with ShuTai injection via the peritoneal cavity. Blood was collected and the animals were then fully exsanguinated and dissected. By analyzing the data of blank control group, the relevant background database of SD rats was established.Results The average body weight of both male and female rats increased steadily, with greater increases in males than females. By the 90th day, The average body weight of male and female rats increased to more than 500 g and 300 g, respectively. After 3 weeks, the average daily food intake of male rats was basically around 25-28 g/animal/day, while the average daily food intake of female animals was basically around 16-19 g/animal/day. The food utilization rate of all animals began to decline from the first week. The results of white blood cell classification showed that there were statistically significant differences in the values of WBC, Neut, Lymph, and Mono between female and male rats (P<0.001), but no statistically significant differences in %Neut, %Lymph, and %Mono between the two sexes (P>0.05). The average values of RBC, HGB, HCT, PLT, PT, and APTT in male rats were higher than those in female rats (P<0.05). The average values of ALT, AST, ALP, CK, LDH, GLU, and TG in male rats were higher than those in female rats (P<0.05). The urine pH values of male rats were within 5.0-8.5 and the urine pH values of female rats were within 6.5-9.0. The urine specific gravity of most male rats was lower than 1.020, while the urine specific gravity of most female rats was lower than 1.015. The absolute weights of all organs (except adrenal and reproductive organs) of male animals were higher than those of female animals (P<0.001), and all visceral-body ratios (except kidney and reproductive organs) of female animals were higher than those of male animals (P<0.001).Conclusion Summarized the reference range of weight, food intake, hematology, serum biochemistry, and other parameters in untreated SD rats of the SPF grade at 90-day test period, providing important reference data for related studies.

Key words: SD rats, 90-day feeding study test, Historical background data

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