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https://www.readbyqxmd.com/read/29218112/triptolide-protects-podocytes-from-tgf-%C3%AE-induced-injury-by-preventing-mir-30-downregulation
#1
Qianqian Yang, Mengjie Sun, Ying Chen, Yuqiu Lu, Yuting Ye, Hui Song, Xiaodong Xu, Shaolin Shi, Jinquan Wang
Triptolide is known to have a strong anti-proteinuric effect through direct protection of podocytes from injury and is used to treat glomerular diseases. However, the mechanism underlying its protective effect on podocytes remains elusive. MiR-30 family has recently been shown to be essential for structural and functional homeostasis of podocytes but is downregulated by injurious factors, leading to podocyte injury. In the present study, we explore whether Triptolide protects podocytes through preventing miR-30 downregulation...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29209210/critical-role-of-hepatic-cyp450s-in-the-testis-specific-toxicity-of-5r-5-hydroxytriptolide-in-c57bl-6-mice
#2
Cunzhi Yu, Yu Li, Mingxia Liu, Man Gao, Chenggang Li, Hong Yan, Chunzhu Li, Lihan Sun, Liying Mo, Chunyong Wu, Xinming Qi, Jin Ren
Low solubility, tissue accumulation, and toxicity are chief obstacles to developing triptolide derivatives, so a better understanding of the pharmacokinetics and toxicity of triptolide derivatives will help with these limitations. To address this, we studied pharmacokinetics and toxicity of (5R)-5-hydroxytriptolide (LLDT-8), a novel triptolide derivative immunosuppressant in a conditional knockout (KO) mouse model with liver-specific deletion of CYP450 reductase. Compared to wild type (WT) mice, after LLDT-8 treatment, KO mice suffered severe testicular toxicity (decreased testicular weight, spermatocytes apoptosis) unlike WT mice...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29207198/mechanism-of-triptolide-in-treating-ankylosing-spondylitis-through-the-anti%C3%A2-ossification-effect-of-the-bmp-smad-signaling-pathway
#3
Guilong Wang, Jing Cai, Jinshan Zhang, Cuiyun Li
The present study aimed to examine the mechanism of triptolide in the treatment of ankylosing spondylitis (AS) through the anti‑ossification effect of bone morphogenetic protein (BMP)/small mothers against decapentaplegic (Smad) pathway. Male rats were randomly divided into five groups: Normal rat group; model group; triptolide low dose group (10 mg/kg); triptolide middle dose group (20 mg/kg); triptolide high dose group (40 mg/kg). The spinal joint capsules of each group of rats were collected to perform primary cell culture to determine the levels of cell proliferation...
November 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29202753/development-of-triptolide-nanoemulsion-gels-for-percutaneous-administration-physicochemical-transport-pharmacokinetic-and-pharmacodynamic-characteristics
#4
Meng Yang, Yongwei Gu, Dishun Yang, Xiaomeng Tang, Jiyong Liu
BACKGROUND: This work aimed to provide useful information on the use of nanoemulsions for the percutaneous administration of triptolide. Lipid nanosystems have great potential for transdermal drug delivery. Nanoemulsions and nanoemulsion gels were prepared to enhance percutaneous permeation. Microstructure and in vitro/in vivo percutaneous delivery characteristics of triptolide (TPL)-nanoemulsions and TPL-nanoemulsion gels were compared. The integrity of the nanoemulsions and nanoemulsion gels during transdermal delivery and its effects on the surface of skin were also investigated...
December 4, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29195901/triptolide-suppresses-paraquat-induced-idiopathic-pulmonary-fibrosis-by-inhibiting-tgfb1-dependent-epithelial-mesenchymal-transition
#5
Hong Chen, Qun Chen, Chun-Ming Jiang, Guang-Yue Shi, Bo-Wen Sui, Wei Zhang, Li-Zhen Yang, Zhu-Ying Li, Li Liu, Yu-Ming Su, Wen-Cheng Zhao, Hong-Qiang Sun, Zhen-Zi Li, Zhou Fu
Idiopathic pulmonary fibrosis (IPF) and tumor are highly similar to abnormal cell proliferation that damages the body. This malignant cell evolution in a stressful environment closely resembles that of epithelial-mesenchymal transition (EMT). As a popular EMT-inducing factor, TGFβ plays an important role in the progression of multiple diseases. However, the drugs that target TGFB1 are limited. In this study, we found that triptolide (TPL), a Chinese medicine extract, exerts an anti-lung fibrosis effect by inhibiting the EMT of lung epithelial cells...
November 28, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29178433/triptolide-inhibits-donor-specific-antibody-production-and-attenuates-mixed-antibody-mediated-renal-allograft-injury
#6
Daqiang Zhao, Siwen Li, Tao Liao, Yuan Wei, Mingyu Liu, Fei Han, Zihuan Luo, Xiaonan Liu, Qiquan Sun
Donor specific antibodies (DSAs) are major mediators of renal allograft injury, and strategies to inhibit DSA are important in promoting long term graft survival. Triptolide exhibits a wide spectrum of anti-inflammatory and immuno- suppressive activities, and in autoimmune diseases it inhibits autoantibody levels. In this study, we investigated the suppressive role of triptolide in the generation of donor specific antibodies in transplant recipients. We found that triptolide treatment of skin allograft recipients in the mouse significantly suppressed the development of circulating anti-donor specific IgG and effectively alleviated DSAs-mediated renal allograft injury, which led to prolonged allograft survival...
November 27, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29166839/-express-the-synergistic-effect-of-treatment-with-triptolide-and-mk-801-in-the-rat-neuropathic-pain-model
#7
Jian Wang, Yu Qiao, Ri-Sheng Yang, Chun-Kui Zhang, Huang-Hui Wu, Jia-Ji Lin, Ting Zhang, Tao Chen, Yun-Qing Li, Yu-Lian Dong, Jin-Lian Li
No abstract text is available yet for this article.
January 1, 2017: Molecular Pain
https://www.readbyqxmd.com/read/29146611/smooth-muscle-selective-nuclear-factor-%C3%AE%C2%BAb-inhibition-reduces-phosphate-induced-arterial-medial-calcification-in-mice-with-chronic-kidney-disease
#8
Tadashi Yoshida, Maho Yamashita, Chihiro Horimai, Matsuhiko Hayashi
BACKGROUND: Hyperphosphatemia is a major factor promoting the formation of arterial medial calcification in chronic kidney disease (CKD). However, arterial medial calcification begins to occur during the early stages of CKD, when hyperphosphatemia is not yet apparent. It is predicted that other factors also play a role. The aim of the present study was to determine the role of pro-inflammatory nuclear factor-κB (NF-κB) signaling in smooth muscle cells (SMCs) for phosphate-induced arterial medial calcification in CKD mice...
November 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29115625/protective-effects-of-silymarin-on-triptolide-induced-acute-hepatotoxicity-in-rats
#9
Lan Wang, Qiong-Hui Huang, Yong-Xian Li, Yan-Feng Huang, Jian-Hui Xie, Lie-Qiang Xu, Yao-Xing Dou, Zi-Ren Su, Hui-Fang Zeng, Jian-Nan Chen
Silymarin has been used in the treatment of a number of liver diseases for a long time, but its efficacy in preventing triptolide induced acute hepatotoxicity has not been reported previously. The present study aimed to assess the protective effect of silymarin against triptolide (TP)-induced hepatotoxicity in rats. Rats were orally administrated with silymarin (50, 100 and 200 mg/kg) for 7 days and received intraperitoneal TP (2 mg/kg) on the day 8. Hepatic injuries were comprehensively evaluated in terms of serum parameters, morphological changes, oxidative damage, inflammation and apoptosis...
November 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29110956/activation-inhibitors-of-nuclear-factor-kappa-b-protect-neurons-against-the-nmda-induced-damage-in-the-rat-retina
#10
Kenji Sakamoto, Tatsuya Okuwaki, Hiroko Ushikubo, Asami Mori, Tsutomu Nakahara, Kunio Ishii
We reported that high-mobility group Box-1 (HMGB1) was involved in excitoneurotoxicity in the retina. HMGB1 is known to activate nuclear factor kappa B (NF-κB). However, the role of NF-κB in excitotoxicity is still controversial. Here, we demonstrated that NF-κB activation induced by NMDA led to the retinal neurotoxicity. Male Sprague-Dawley rats were used, and NMDA (200 nmol/eye) and bovine HMGB1 (15 μg/eye) were intravitreally injected. Triptolide (500 pmol/eye), BAY 11-7082 (500 pmol/eye), and IMD-0354 (7...
September 29, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29104642/inhibitory-effects-of-pga1-and-tri-on-the-apoptosis-of-cardiac-microvascular-endothelial-cells-of-rats
#11
Wen-Hua Peng, Jia-Li Wang, Yan Ren, Yan-Xiang Gao, Geng Li, Yong Wang
The present study investigated the protective effects and molecular mechanism of prostaglandin A1 (PGA1) and triptolide (TRI) on apoptosis of cardiac microvascular endothelial cells (CMVECs) in rats. CMVECs of rats were isolated and then cultured. MTT method was used to select and establish a cell hypoxia reoxygenation cell model. The cells were divided into four groups: Normoxia control group (C, normal oxygen), hypoxia reoxygenation group (H/R, hypoxia for 12 h/reoxygenation for 6 h), PGA1 group (H/R+PGA1) and TRI group (H/R+TRI)...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29104493/triptolide-suppresses-glomerular-mesangial-cell-proliferation-in-diabetic-nephropathy-is-associated-with-inhibition-of-pdk1-akt-mtor-pathway
#12
Fei Han, Mei Xue, Yunpeng Chang, Xiaoyu Li, Yang Yang, Bei Sun, Liming Chen
Mesangial cell proliferation has been identified as a mainly contributing factor to glomerulosclerosis, which is typical of diabetic nephropathy. However, the specific mechanisms and therapies remain unclear. PDK1 is a critical regulator of cell proliferation, but the specific role of PDK1 in diabetic nephropathy has not been fully illuminated. In the current study, we demonstrated that triptolide (TP) ameliorated albuminuria in the high fat diet/STZ-induced diabetic rats. TP also suppressed the increased proliferating cell markers Ki-67 and PCNA in the kidney tissues...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29098818/-advanced-progress-of-main-pharmacology-activities-of-triptolide
#13
REVIEW
Jin Cui, Xiao Chen, Jia-Can Su
Triptolide is an active component in traditional Chinese medicine Tripterygium wilfordii. Currently, triptolide has been used to treat various diseases, including lupus, cancer, rheumatoid arthritis and nephritic syndrome. Its main pharmacology efficacies include anti-inflammation, anti-tumor, and immunity suppression. Recent studies have also demonstrated triptolide's protective effect on cardiovascular diseases and osteoporosis. This paper summarizes the pharmacological efficacy of triptolide based on the advance in studies of triptolide...
July 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29096654/the-analgesic-effects-of-triptolide-in-the-bone-cancer-pain-rats-via-inhibiting-the-upregulation-of-hdacs-in-spinal-glial-cells
#14
Xiao-Fan Hu, Xiao-Tao He, Kai-Xiang Zhou, Chen Zhang, Wen-Jun Zhao, Ting Zhang, Jin-Lian Li, Jian-Ping Deng, Yu-Lin Dong
BACKGROUND: Bone cancer pain (BCP) severely compromises the quality of life, while current treatments are still unsatisfactory. Here, we tested the antinociceptive effects of triptolide (T10), a substance with considerable anti-tumor efficacies on BCP, and investigated the underlying mechanisms targeting the spinal dorsal horn (SDH). METHODS: Intratibial inoculation of Walker 256 mammary gland carcinoma cells was used to establish a BCP model in rats. T10 was intrathecally injected, and mechanical allodynia was tested by measuring the paw withdrawal thresholds (PWTs)...
November 2, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29040945/quercetin-protects-mouse-liver-against-triptolide-induced-hepatic-injury-by-restoring-th17-treg-balance-through-tim-3-and-tlr4-myd88-nf-%C3%AE%C2%BAb-pathway
#15
Cai-Bing Wei, Kun Tao, Rong Jiang, Lian-Di Zhou, Qi-Hui Zhang, Chun-Su Yuan
Triptolide (TP) is a diterpene triepoxide with various biological activities, but its clinical applications have been limited by potential hepatotoxicity, which can be attributed to T helper 17 (Th17)/T regulatory (Treg) cell imbalance. Quercetin (QE), a natural flavonoid, has been reported to have many benefits and medicinal properties, including hepatoprotective activity against TP-induced liver injury. However, the hepatoprotection mechanisms have not been clarified. The present study was designed to explore the protective effect and the mechanism of QE against TP-induced liver injury...
October 14, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29037923/withdrawn-toxicity-of-triptolide-and-the-molecular-mechanisms-involved
#16
Chen Xi, Shaojun Peng, Zhengping Wu, Qingping Zhou, Jie Zhou
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
September 21, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29031206/inhibitory-effect-of-triperygium-wilfordii-polyglucoside-on-dipeptidyl-peptidase-i-in-vivo-and-in-vitro
#17
Jingjing Wang, Yi Chu, Xiaoying Zhou
BACKGROUD: Dipeptidyl peptidase I (DPPI), a lysosomal cysteine protease is derived from granule immune cells including mast cell, neutrophils, and toxicity T cells. DPPI can activate serine proteases by removal of dipeptides from N-termini of the pro-proteases, resulting in granule immune cells activation which involved in physiological or pathological responses. Triperygium Wilfordii Polyglucoside (TWP) is one of the traditional Chinese medicines, and commonly used in rheumatoid arthritis (RA) treatment...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29027455/-construction-and-verification-of-nf-%C3%AE%C2%BAb-luciferase-reporter-gene-system
#18
Zhilan Guo, Luyang Che, Jingzhe Li, Zhenxiao Sun, Changzhen Liu
To quantify the transcriptional activity of NF-κB and to screen drugs related to the regulation of NF-κB activation, we constructed a recombinant plasmid through deleting the original CMV promoter of retrovirus vector pQCXIP and inserting the NF-κB enhancer and NanoLuc luciferase sequence into the vector. Then, using the recombinant plasmid we constructed a cell line in which the expression of NanoLuc luciferase (NLuc) was regulated by NF-κB. The inserted sequences were verified by restriction endonuclease digestion and sequencing...
October 25, 2016: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
https://www.readbyqxmd.com/read/28962522/characterization-of-triptolide-induced-hepatotoxicity-by-imaging-and-transcriptomics-in-a-novel-zebrafish-model
#19
Adriaan D Bastiaan Vliegenthart, Chunmin Wei, Charlotte Buckley, Cécile Berends, Carmelita M J de Potter, Sarah Schneemann, Jorge Del Pozo, Carl Tucker, John J Mullins, David J Webb, James W Dear
Triptolide is a vine extract used in traditional Chinese medicines and associated with hepatotoxicity. In vitro data suggest that inhibition of RNA synthesis may be the mechanism of toxicity. For studying drug-induced liver injury the zebrafish has experimental, practical and financial advantages compared with rodents. The aim of this study was to explore the mechanism of triptolide toxicity using zebrafish as the model system. The effect of triptolide exposure on zebrafish larvae was determined with regard to mortality, histology, expression of liver specific microRNA-122 and liver volume...
October 1, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28962154/interleukin-6-inhibition-by-triptolide-prevents-inflammation-in-a-mouse-model-of-ulcerative-colitis
#20
Haifeng Zhang, Weichang Chen
The present study aimed to assess interleukin (IL)-6 expression in a murine model of ulcerative colitis (UC) induced by dextran sulfate sodium (DSS) and its potential association with the anti-colitis effects of triptolide (TL). Serum IL-6 levels were measured by ELISA. IL-6 gene expression levels in colonic mucosa specimens were assessed by reverse-transcription quantitative PCR and protein expression was evaluated by western blot analysis and immunohistochemistry. The expression of IL-6 was weak in mucosa specimens from normal control animals and upregulated in DSS-induced mice...
September 2017: Experimental and Therapeutic Medicine
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