法医学杂志 ›› 2023, Vol. 39 ›› Issue (1): 13-17.DOI: 10.12116/j.issn.1004-5619.2021.410403

• 论著 • 上一篇    下一篇

1,5-AG在高糖代谢兔尸体玻璃体液中的变化

刘芳芳(), 吴慧, 王威, 谢英()   

  1. 川北医学院基础医学与法医学院,四川 南充 637000
  • 收稿日期:2021-04-06 发布日期:2023-02-25 出版日期:2023-02-28
  • 通讯作者: 谢英
  • 作者简介:谢英,女,副教授,主要从事法医临床学及法医病理学研究;E-mail:12828614@qq.com
    刘芳芳(1993—),女,硕士研究生,主要从事法医临床学及法医病理学研究;E-mail:903922335@qq.com
  • 基金资助:
    南充市市校合作科研专项资金资助项目(19SXHZ0197)

Changes of 1,5-AG in Vitreous Humor of Rabbit Cadavers with Hyperglycemic Metabolism

Fang-Fang LIU(), Hui WU, Wei WANG, Ying XIE()   

  1. School of Basic Medicine and Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
  • Received:2021-04-06 Online:2023-02-25 Published:2023-02-28
  • Contact: Ying XIE

摘要:

目的 了解1,5-脱水葡萄糖醇(1,5-anhydroglucitol,1,5-AG)在高糖代谢兔尸体玻璃体液中的浓度水平及变化特点,探讨1,5-AG在高糖代谢紊乱所致死亡的法医病理学中的鉴定价值。 方法 采用四氧嘧啶建立糖尿病高血糖兔模型,选取18只空腹血糖浓度≥13.80 mmol/L的糖尿病高血糖兔(实验组)和18只空腹血糖浓度≤6.10 mmol/L的健康兔(对照组),采用空气栓塞处死,即刻采集血液,于死后0、12、24、36 h采集玻璃体液,检测兔血液及玻璃体液中1,5-AG的质量浓度。 结果 实验组血糖浓度为(25.10±3.14)mmol/L;1,5-AG质量浓度在死亡即刻血浆中[(0.94±0.20)μg/mL]与玻璃体液中[(0.99±0.05)μg/mL]差异无统计学意义(P>0.05)。实验组各时间点玻璃体液中1,5-AG质量浓度低于相应对照组(P<0.05),实验组及对照组各时间点玻璃体1,5-AG质量浓度差异无统计学意义(P>0.05)。对照组和实验组兔血浆中1,5-AG质量浓度与血糖浓度均呈负相关(对照组r=-0.79,P<0.05;实验组r=-0.97,P<0.05)。 结论 玻璃体液可以替代血液作为检测1,5-AG的有效检材,兔玻璃体液中1,5-AG质量浓度在死后36 h内保持稳定,不受死后时间变化的影响。1,5-AG质量浓度明显下降,提示兔生前存在高血糖状态。

关键词: 法医病理学, 1,5-脱水葡萄糖醇, 高血糖, 玻璃体液, 糖尿病,

Abstract:

Objective To investigate the concentration and change characteristics of 1,5-anhydroglucitol (1,5-AG) in the vitreous humor of rabbit cadavers with hyperglycemic metabolism, and to explore the value of 1,5-AG in forensic pathology identification of death caused by hyperglycemic metabolism disorders. Methods A diabetic hyperglycemic rabbit model was established by using alloxan. Eighteen rabbits with fasting glucose concentration ≥13.80 mmol/L (experimental group) and 18 healthy rabbits with fasting glucose concentration ≤6.10 mmol/L (control group) were selected. After death from air embolism. The blood samples were collected immediately, and vitreous humor samples were collected at 0 h, 12 h, 24 h and 36 h after death. The concentration of 1,5-AG in the blood and vitreous humor of rabbits was determined. Results The blood glucose concentration in the experimental group was (25.10±3.14) mmol/L. At the time of death, there was no significant difference in the concentration of 1,5-AG in the blood [(0.94±0.20) μg/mL] and in the vitreous humor (0.99±0.05 μg/mL, P>0.05). The concentration of 1,5-AG in the vitreous humor of the experimental group was lower than that of the corresponding control group at all time points (P<0.05), and there was no significant difference betwwen 1,5-AG concentration in vitreous humor between earch time point in the experimental group and the control group (P>0.05). Correlation analysis showed that the concentration of 1,5-AG in blood was negatively correlated with blood glucose in both control group and experimental group (control group: r=-0.79, P<0.05; experimental group: r=-0.97, P<0.05). Conclusion Vitreous humor can replace blood as an effective test sample for 1,5-AG detection. The concentration of 1,5-AG in rabbit vitreous humor remains stable within 36 hours after death and is not affected by the change of postmortem interval. If the concentration of 1,5-AG decreases significantly, it indicates the existence of hyperglycemia in rabbits before death.

Key words: forensic pathology, 1,5-anhydroglucitol, hyperglycemic, vitreous humor, diabetes mellitus, rabbits

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