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中国精品科技期刊2020
邢岩,邵帅,和晓贤,等. 破壁松花粉对镉中毒大鼠的保护作用[J]. 食品工业科技,2025,46(14):1−7. doi: 10.13386/j.issn1002-0306.2024080097.
引用本文: 邢岩,邵帅,和晓贤,等. 破壁松花粉对镉中毒大鼠的保护作用[J]. 食品工业科技,2025,46(14):1−7. doi: 10.13386/j.issn1002-0306.2024080097.
XING Yan, SHAO Shuai, HE Xiaoxian, et al. Protective Effect of Broken Pine Pollen on Cadmium-poisoned Rats[J]. Science and Technology of Food Industry, 2025, 46(14): 1−7. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024080097.
Citation: XING Yan, SHAO Shuai, HE Xiaoxian, et al. Protective Effect of Broken Pine Pollen on Cadmium-poisoned Rats[J]. Science and Technology of Food Industry, 2025, 46(14): 1−7. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024080097.

破壁松花粉对镉中毒大鼠的保护作用

Protective Effect of Broken Pine Pollen on Cadmium-poisoned Rats

  • 摘要: 目的:研究破壁松花粉对镉中毒大鼠的保护作用。方法:雄性SD大鼠50只,随机分为对照组、模型组、松花粉低、中、高剂量组。模型组和松花粉各干预组每日腹腔注射氯化镉(0.2 mg/kg 体重),松花粉低、中、高剂量组大鼠每日喂饲破壁松花粉1、2、3 g,持续28 d。观察并检测大鼠血液、肝脏、肾脏、股骨、睾丸、粪尿中镉、锌含量、相关理化指标与基因表达水平,以及组织形态学变化。结果:与对照组相比,模型组大鼠睾丸指数显著下降(P<0.05),血清、股骨、肝、肾、睾丸中镉含量均显著增高(P<0.05),大鼠肾脏和睾丸产生严重的组织形态学改变。松花粉各给药组可不同程度改善肾和睾丸的病理损伤,高剂量组效果优于低中剂量组。与模型组相比,高剂量松花粉干预后可显著提高染毒大鼠血清超氧化物歧化酶(Superoxide Dismutase,SOD)水平,降低脂质过氧化物(Lipid Peroxidation,LPO)水平(P<0.05),上调睾丸核转录因子E2相关因子2(Nuclear Factor erythroid 2-Related Factor 2,Nrf2)、血红素加氧酶1(Heme Oxygenase 1,HO-1)和B细胞淋巴瘤/白血病-2基因(B-cell lymphoma-2,Bcl-2)表达水平,下调半胱氨酸-天冬氨酸蛋白酶-3(Caspase-3)基因表达(P<0.05),增加镉在粪尿中排出,显著减少镉在大鼠体内蓄积,增加锌水平(P<0.05)。结论:破壁松花粉可通过激活Nrf2/HO-1通路,提高机体抗氧化能力,同时增加锌的摄入,促进镉排出,有效降低镉对机体损害。

     

    Abstract: Objective: To investigate the protective effect of broken pine pollen on cadmium-poisoned rats. Methods: Fifty male SD rats were randomly divided into control, model, low, medium, and high-dose pine pollen groups. The models and pine pollen intervention groups were intraperitoneally injected with cadmium chloride (0.2 mg/kg body weight), and rats in the low, medium, and high dose groups of pine pollen were fed daily with 1, 2, and 3 g of broken pine pollen, respectively, for 28 d. Levels of cadmium and zinc in the blood, liver, kidneys, femur, testicles, feces, and urine of rats, as well as related physical and chemical indicators and gene expression levels, and histological changes were observed and detected. Results: Compared with the control, the testicular index of the model rats was significantly decreased (P<0.05), and the cadmium content in serum, femur, liver, kidneys, and testicles significantly increased (P<0.05). Severe histological changes were observed in the kidney and testicle in models, while the pine pollen treatments alleviated pathological damages to the kidney and testicle to varying degrees, with the high-dose group showed better improvement than the low and medium dose group. Compared with the model group, intervention with high-dose pine pollen significantly increased serum superoxide dismutase (SOD) levels, decreased lipid peroxidation (LPO) levels (P<0.05), up-regulated nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase 1 (HO-1) and B-cell lymphoma-2 (Bcl-2) gene expression and down-regulated Caspase-3 gene expression in testicles (P<0.05). Furthermore, the intervention promoted the excretion of cadmium in feces and urine, significantly reduced cadmium accumulation in rats, and increased zinc levels (P<0.05). Conclusion: Broken pine pollen exerts protective effetcs on cadmium-induced toxicity by activating the Nrf2/HO-1 pathway, enhancing the body's antioxidant capacity, and increasing zinc intake, promoting cadmium excretion.

     

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