Effects of Qingshen granules on Janus Kinase/signal transducer and activator of transcription signaling pathway in rats with unilateral ureteral obstruction

IF 2 4区 医学 Q2 INTEGRATIVE & COMPLEMENTARY MEDICINE Journal of Traditional Chinese Medicine Pub Date : 2018-04-01 DOI:10.1016/j.jtcm.2017.04.001
Wang Yiping , Wang Dong , Jin Hua , Yu Min , Zhang Lei
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引用次数: 2

Abstract

OBJECTIVE

To investigate the effects of Qingshen granules (QSG) on janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway in a rat model of unilateral ureteral obstruction (UUO).

METHODS

Sixty male Sprague-Dawley rats were randomly divided into six groups, with 10 animals in each group: the untreated sham-operated normal control group; the untreated UUO model control group, the high dose QSG-treated (16 g•kg−1•d−1) UUO group; the medium dose QSG-treated (8 g•kg−1•d−1) UUO group; the low dose QSG-treated (4 g•kg−1•d−1) UUO group; and the valsartan-treated group (20 mg•kg−1•d−1). The two untreated control groups received physiological saline (1 mL/100 g per day). All the rats were sacrificed after a 4-week course of treatment. Serum creatinine and leptin; protein expressions of leptin receptor (OB-R), p-JAK2, p-STAT3, nuclear factors-κBp6 (NF-kBp65), and monocytechemotatic protein-1 (MCP-1); mRNA of JAK2, STAT3, calcium-dependent adhesion (E-cadherin), alphasmooth muscle actin (α-SMA) in the kidney tissues; and the expressions of type IV collagen (Col-IV and fibronectin (FN) and the pathomorphology in kidney tissues were treated.

RESULTS

Compared with the normal group, the BUN, Scr, and serum leptin levels and the expressions of MCP-1, p-JAK2, p-STAT3, NF-kBp65 and OB-R in renal tissues, and the mRNA expressions of leptin, JAK2 protein, STAT3 protein, α-SMA protein in model group were significantly higher (P < 0.01) in the UUO model group. These parameters were significantly reduced in all the QSG-treated groups and the valsartan-treated group than the UUO model group (P < 0.05 or P < 0.01), with the lowest levels found in the medium dose QSG-treated group (P < 0.05). However, the expression levels of E-cadherin, FN, and Col-IV in the renal tissues were contrary to the expressions described above. Severe pathological injury was evident in the renal tissues of UUO model rats, which was alleviated in the QSG-treated and valsartan-treated groups, with the least damage found in the medium dose QSG-treated group.

CONCLUSION

Our data suggest that the leptin-mediated JAK/STAT signaling pathway is involved in the process of renal interstitial fibrosis in UUO rats. QSG inhibited the activity of the signaling pathway, reduced the activity of NF-kB and inflammatory effect, and the transdifferentiation in the renal tubular epithelial cells. Treatment with QSG may delay the renal fibrosis and protect the renal function from damage following UUO in rats.

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清肾颗粒对单侧输尿管梗阻大鼠Janus激酶/信号转导及转录信号通路激活因子的影响
目的探讨清肾颗粒(QSG)对单侧输尿管梗阻(UUO)大鼠janus kinase/signal transducer and activator of transcription (JAK/STAT)信号通路的影响。方法雄性Sprague-Dawley大鼠60只,随机分为6组,每组10只:未经治疗假手术正常对照组;为未处理UUO模型对照组,高剂量qsg处理(16 g•kg−1•d−1)UUO组;中剂量qsg处理(8 g•kg−1•d−1)UUO组;低剂量qsg处理(4 g•kg−1•d−1)UUO组;缬沙坦治疗组(20mg•kg−1•d−1)。对照组给予生理盐水(1 mL/100 g / d)。4周疗程后处死所有大鼠。血清肌酐、瘦素;瘦素受体(OB-R)、p-JAK2、p-STAT3、核因子-κBp6 (NF-kBp65)、单核细胞代谢蛋白-1 (MCP-1)的表达;肾组织中JAK2、STAT3、钙依赖性粘连蛋白(E-cadherin)、α-SMA的mRNA表达;观察肾组织ⅳ型胶原(Col-IV)和纤连蛋白(FN)的表达及病理形态学变化。结果与正常组比较,模型组大鼠肾组织BUN、Scr、血清瘦素水平、MCP-1、P- JAK2、P- STAT3、NF-kBp65、OB-R表达及瘦素、JAK2蛋白、STAT3蛋白、α-SMA蛋白mRNA表达均显著升高(P <0.01)。与UUO模型组相比,所有qsg治疗组和缬沙坦治疗组的这些参数均显著降低(P <0.05或P <0.01),其中中剂量组最低(P <0.05)。然而,E-cadherin、FN和Col-IV在肾组织中的表达水平与上述表达相反。UUO模型大鼠肾组织出现严重病理损伤,芪芪多糖处理组和缬沙坦处理组均有所减轻,其中芪芪多糖中剂量组损伤最小。结论瘦素介导的JAK/STAT信号通路参与了UUO大鼠肾间质纤维化过程。QSG抑制了信号通路的活性,降低了NF-kB活性和炎症效应,降低了肾小管上皮细胞的转分化。QSG治疗可延缓UUO大鼠肾纤维化,保护肾功能不受损害。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Traditional Chinese Medicine
Journal of Traditional Chinese Medicine INTEGRATIVE & COMPLEMENTARY MEDICINE-
CiteScore
2.40
自引率
3.80%
发文量
32269
审稿时长
2 months
期刊介绍: Journal of Traditional Chinese Medicine(JTCM) is devoted to clinical and theortical research on the use of acupuncture and Oriental medicine. The main columns include Clinical Observations, Basic Investigations, Reviews, Questions and Answers, an Expert''s Forum, and Discussions of Clinical Cases. Its key topics include acupuncture and electro-acupuncture, herbal medicine, homeopathy, masseotherapy, mind-body therapies, palliative care, and other CAM therapies.
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