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一种糖营养混合物(安布罗托糖®)能使感染柯萨奇病毒诱发胰腺炎的小鼠病情有所改善。

A glyconutritional mixture (Ambrotose®) provides some amelioration to mice with coxsackievirus-induced pancreatitis.

作者信息

Gauntt C, Busbee D, Wood H J, Reyna S, Barhoumi R, Burghardt R, McAnalley W, McDaniel H R

出版信息

Age (Omaha). 1999 Oct;22(4):149-58. doi: 10.1007/s11357-999-0017-0.

Abstract

Challenge of adolescent male CD-1 mice with a coxsackievirus B3 (CVB3) strain (CVB3m) induces mild to severe destruction of pancreatic acinar cells, but causes no deaths and does not induce hyperglycemia. A weekly parenteral (intraperitoneal) administration of a glyconutritional mixture (Ambrotose® to virus-challenged mice was assessed to determine if there were any benefits to recovery over an eight month period. Virus-challenged mice showed a significant weight loss over the initial five weeks of the experiment, but injection of Ambrotose® to similar virus-challenged mice restored the total body weight to levels found in normal mice. Normal mice given Ambrotose® exhibited a small weight gain. Mice given Ambrotose® showed reduced severity of pancreatitis, as evidenced by significant reductions in percentages of pancreatic acinar cells destroyed and proportion of sections of pancreata with destroyed acinar cells, compared to virus control-mice not injected with Ambrotose®. Statistical analyses of the extent of acinar cell pathology in all virus-challenged mice showed that Ambrotose® contributed significantly to recovery of the acinar cell population in virus-inoculated mice. Anti-viral antibody titers were not affected by Ambrotose® injections. One potential mechanism to explain the benefits derived from Ambrotose® injections came from studies of antioxidant levels of glutathione in splenic macrophages/monocytes. Whereas CVB3 challenge of mice reduced glutathione levels in the latter cells, Ambrotose® injections to virus-challenged mice restored glutathione levels to those found in normal mice. In summary, most but not all mice derived benefits from Ambrotose® injections, i.e. a reduction in pathology in the pancreas and restored levels of the antioxidant glutathione in macrophages/monocytes. Higher doses of Ambrotose® could provide greater benefits for more mice, a study for the future.

摘要

用柯萨奇病毒B3(CVB3)毒株(CVB3m)感染青春期雄性CD-1小鼠,会导致胰腺腺泡细胞出现轻度至重度破坏,但不会导致死亡,也不会诱发高血糖。评估了每周一次对受病毒攻击的小鼠进行肠胃外(腹腔内)注射糖营养混合物(安布罗糖®),以确定在八个月的时间里对恢复是否有任何益处。在实验的最初五周,受病毒攻击的小鼠体重显著减轻,但对类似受病毒攻击的小鼠注射安布罗糖®后,总体重恢复到了正常小鼠的水平。给予安布罗糖®的正常小鼠体重有小幅增加。与未注射安布罗糖®的病毒对照小鼠相比,给予安布罗糖®的小鼠胰腺炎严重程度降低,这表现为胰腺腺泡细胞被破坏的百分比以及胰腺中腺泡细胞被破坏的切片比例显著降低。对所有受病毒攻击小鼠的腺泡细胞病理程度进行统计分析表明,安布罗糖®对病毒接种小鼠腺泡细胞群体的恢复有显著作用。抗病毒抗体滴度不受安布罗糖®注射的影响。解释安布罗糖®注射带来益处的一个潜在机制来自对脾巨噬细胞/单核细胞中谷胱甘肽抗氧化水平的研究。虽然用CVB3攻击小鼠会降低后一种细胞中的谷胱甘肽水平,但对受病毒攻击的小鼠注射安布罗糖®可使谷胱甘肽水平恢复到正常小鼠的水平。总之,大多数但并非所有小鼠都从安布罗糖®注射中受益,即胰腺病理状况减轻以及巨噬细胞/单核细胞中抗氧化剂谷胱甘肽水平恢复。更高剂量的安布罗糖®可能会为更多小鼠带来更大益处,这有待未来研究。

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