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Yang H, Liu C, Zhang YQ, Ge LT, Chen J, Jia XQ, Gu RX, Sun Y, Sun WD. Ilexgenin A induces B16-F10 melanoma cell G1/S arrest in vitro and reduces tumor growth in vivo. Int Immunopharmacol 2015; 24:423-431. [DOI: 10.1016/j.intimp.2014.12.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 12/12/2014] [Accepted: 12/12/2014] [Indexed: 12/24/2022]
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Kapewangolo P, Omolo JJ, Bruwer R, Fonteh P, Meyer D. Antioxidant and anti-inflammatory activity of Ocimum labiatum extract and isolated labdane diterpenoid. JOURNAL OF INFLAMMATION-LONDON 2015; 12:4. [PMID: 25705127 PMCID: PMC4335562 DOI: 10.1186/s12950-015-0049-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 01/04/2015] [Indexed: 12/12/2022]
Abstract
Background Plants from the genus Ocimum are used as folk medicine for treating various diseases including inflammatory and immune-related diseases. Numerous reports have suggested plant extracts and their constituents as possible anti-inflammatory agents. Here, in vitro evidence of Ocimum labiatum’s immune-enhancing and antioxidant properties is presented for the first time. Methods The anti-inflammatory effect of O. labiatum ethanolic extract and an isolated diterpenoid was determined using a cytometric bead array (CBA) technique. The effect on phytohemagglutinin (PHA)-induced nitric oxide (NO) production in peripheral blood mononuclear cells (PBMCs) was also assessed. A battery of antioxidant assays were used for detecting antioxidant activity while the anti-inflammatory mechanism was evaluated using an ELISA-based activator protein (AP-1) (c-Jun) assay. Cytotoxicity was determined on TZM-bl and PBMCs using a tetrazolium dye and confirmed by a novel label-free real-time assay. Results A 25 μg/mL non-cytotoxic concentration of O. labiatum extract significantly (p < 0.05) inhibited the production of pro-inflammatory cytokines; IL-2, IL-4, IL-6 and IL-17A. Except for the dual acting pro- or anti-inflammatory cytokine, IL-6, which was upregulated, a non-cytotoxic 50 μM concentration of the isolated labdane diterpenoid compound significantly (p < 0.05) decreased the production of all the pro-inflammatory cytokines. In the anti-inflammatory pathway studies, the compound also inhibited AP-1 significantly (p < 0.05) at 50 μM. The extract demonstrated strong, dose dependent antioxidant activity with IC50 values ranging from 13 ± 0.8 to 54.86 ± 1.28 μg/mL while the terpene had no antioxidant property. The extract and diterpenoid decreased the production of the inflammatory mediator NO, at non-cytotoxic concentrations. The CC50 of the extract in TZM-bl and PBMCs was 62.6 ± 0.6 and 30.1 ± 0.4 μg/mL while that of the compound was 112.6 ± 0.2 and 70 ± 0.4 μM respectively. The real time studies confirmed tetrazolium dye assessed viability and also detected a unique growth pattern for the plant materials compared to untreated cells. Conclusions O. labiatum extract demonstrated promising anti-inflammatory and antioxidant properties while the terpenoid showed anti-inflammatory but no antioxidant activity. The anti-inflammatory mechanism of the terpene was a result of inhibition of AP-1. These data represents promising first steps towards the development of naturally derived anti-inflammation drugs.
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Affiliation(s)
- Petrina Kapewangolo
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Hatfield Campus, Pretoria, 0002 South Africa ; Present address: Chemistry & Biochemistry department, Faculty of Science, University of Namibia, Windhoek, 9000 Namibia
| | - Justin J Omolo
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, P.O. Box 2050, Johannesburg, South Africa ; Present address: Department of Traditional Medicine, National Institute for Medical Research, P. O Box 9653, Dar es Salaam, Tanzania
| | - Ronel Bruwer
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Hatfield Campus, Pretoria, 0002 South Africa
| | - Pascaline Fonteh
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Hatfield Campus, Pretoria, 0002 South Africa
| | - Debra Meyer
- Department of Biochemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Hatfield Campus, Pretoria, 0002 South Africa ; Present address: Department of Biochemistry, Faculty of Sciences, University of Johannesburg, P.O. Box 524, Auckland Park, Johannesburg, 2006 South Africa
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New insights into the chemical and biochemical basis of the "yang-invigorating" action of chinese yang-tonic herbs. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:856273. [PMID: 25610483 PMCID: PMC4295141 DOI: 10.1155/2014/856273] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 06/07/2014] [Accepted: 06/21/2014] [Indexed: 12/23/2022]
Abstract
In the practice of traditional Chinese medicine, many Yang-tonic herbs have been used for retarding the decline in bodily function and delaying the onset of age-related diseases. Our earlier studies have demonstrated that Yang-invigorating herbs/formulations protect against oxidative injury in various organs and also extend the median lifespan in mice. This lifespan extension was associated with an upregulation of cellular antioxidant status including that of mitochondria whose functional capacity is also increased by “Yang-invigorating” herbs/formulations. In this paper, we propose that triterpenes and phytosterols, which are ubiquitously found in Yang-tonic herbs, may be the chemical entities responsible for enhancing mitochondrial functional and antioxidant capacity and thus the “Yang-invigorating” action. The biochemical mechanism underlying this “Yang-invigorating” action may involve a sustained production of low levels of mitochondrial reactive oxygen species (ROS) secondary to an increased activity of the electron transport chain, with the possible involvement of mitochondrial uncoupling. The increase in mitochondrial functional capacity can retard the decline in bodily function during aging, whereas the mitochondrial ROS production is instrumental in eliciting a glutathione antioxidant response via redox-sensitive signaling pathways, which can delay the onset of age-related diseases.
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Zhang T, Su J, Guo B, Zhu T, Wang K, Li X. Ursolic acid alleviates early brain injury after experimental subarachnoid hemorrhage by suppressing TLR4-mediated inflammatory pathway. Int Immunopharmacol 2014; 23:585-91. [PMID: 25466266 DOI: 10.1016/j.intimp.2014.10.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/08/2014] [Accepted: 10/08/2014] [Indexed: 10/24/2022]
Abstract
Our previous studies proved that ursolic acid (UA) protected against early brain injury (EBI) by modulating oxidative stress after experimental subarachnoid hemorrhage (SAH), but it has not been evaluated yet about its effects on an inflammatory pathway in a SAH model. This study was undertaken to evaluate the influence of UA on the toll-like receptor 4 (TLR4) signaling pathway after SAH. Adult male SD rats were divided into vehicle-treated sham, vehicle-treated SAH, and UA-treated SAH groups. The endovascular puncture model was used to induce SAH and all the rats were subsequently sacrificed at 48 h after SAH. UA administration markedly decreased the expressions of TLR4 pathway-related agents, such as intercellular adhesion molecule-1 (ICAM-1), TLR4, nuclear factor-κB (NF-κB) P65, interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), inducible nitric oxide synthase (iNOS) and matrix metalloproteinase (MMP)-9. Apoptosis detected by TUNEL indicated that fewer positive cells appeared in UA administration SAH groups than the control group. In conclusion, UA may attenuate EBI after SAH in rats by suppressing the TLR4-mediated inflammatory pathway.
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Weng H, Tan ZJ, Hu YP, Shu YJ, Bao RF, Jiang L, Wu XS, Li ML, Ding Q, Wang XA, Xiang SS, Li HF, Cao Y, Tao F, Liu YB. Ursolic acid induces cell cycle arrest and apoptosis of gallbladder carcinoma cells. Cancer Cell Int 2014; 14:96. [PMID: 25383044 PMCID: PMC4224689 DOI: 10.1186/s12935-014-0096-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 09/10/2014] [Indexed: 12/27/2022] Open
Abstract
Background Ursolic acid (UA), a plant extract used in traditional Chinese medicine, exhibits potential anticancer effects in various human cancer cell lines in vitro. In the present study, we evaluated the anti-tumoral properties of UA against gallbladder carcinoma and investigated the potential mechanisms responsible for its effects on proliferation, cell cycle arrest and apoptosis in vitro. Methods The anti-tumor activity of UA against GBC-SD and SGC-996 cells was assessed using MTT and colony formation assays. An annexin V/PI double-staining assay was used to detect cell apoptosis. Cell cycle changes were detected using flow cytometry. Rhodamine 123 staining was used to assess the mitochondrial membrane potential (ΔΨm) and validate UA’s ability to induce apoptosis in both cell lines. The effectiveness of UA in gallbladder cancer was further verified in vivo by establishing a xenograft GBC model in nude mice. Finally, the expression levels of cell cycle- and apoptosis-related proteins were analyzed by western blotting. Results Our results suggest that UA can significantly inhibit the growth of gallbladder cancer cells. MTT and colony formation assays indicated dose-dependent decreases in cell proliferation. S-phase arrest was observed in both cell lines after treatment with UA. Annexin V/PI staining suggested that UA induced both early and late phases of apoptosis. UA also decreased ΔΨm and altered the expression of molecules regulating the cell cycle and apoptosis. In vivo study showed intraperitoneally injection of UA can significantly inhibited the growth of xenograft tumor in nude mice and the inhibition efficiency is dose related. Activation of caspase-3,-9 and PARP indicated that mitochondrial pathways may be involved in UA-induced apoptosis. Conclusions Taken together, these results suggest that UA exhibits significant anti-tumor effects by suppressing cell proliferation, promoting apoptosis and inducing 7cell cycle arrest both in vitro and in vivo. It may be a potential agent for treating gallbladder cancer.
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Affiliation(s)
- Hao Weng
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Zhu-Jun Tan
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Yun-Ping Hu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Yi-Jun Shu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Run-Fa Bao
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Lin Jiang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Xiang-Song Wu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Mao-Lan Li
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Qian Ding
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Xu-An Wang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Shan-Shan Xiang
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Huai-Feng Li
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Yang Cao
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
| | - Feng Tao
- Gastrointestinal Surgery, Shaoxing People's Hospital Shaoxing Hospital of Zhejiang University, No. 568 Zhongxing North Road, Shaoxing, 312000 Zhejiang Province China
| | - Ying-Bin Liu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Laboratory of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China ; Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai, 200092 China
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Jang SE, Jeong JJ, Hyam SR, Han MJ, Kim DH. Ursolic acid isolated from the seed of Cornus officinalis ameliorates colitis in mice by inhibiting the binding of lipopolysaccharide to Toll-like receptor 4 on macrophages. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9711-21. [PMID: 25213465 DOI: 10.1021/jf501487v] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Ursolic acid, which was isolated from an ethanol extract of Cornus officinalis seed, potently inhibited nuclear factor κ light-chain enhancer of activated B cells (NF-κB) activation in lipopolysaccharide (LPS)-stimulated peritoneal macrophages. Therefore, we investigated the anti-inflammatory mechanism of ursolic acid in LPS-stimulated macrophages and colitic mice. Ursolic acid inhibited phosphorylation of interleukin 1 receptor-associated kinase (IRAK)1, TAK1, inhibitor of nuclear factor κB kinase subunit β (IKKβ), and IκBα as well as activation of NF-κB and MAPKs in LPS-stimulated macrophages. Ursolic acid suppressed LPS-stimulated interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, cyclooxygenase (COX)-2, and inducible NO synthetase (iNOS) expression as well as PGE2 and NO levels. Ursolic acid not only inhibited the Alexa Fluor 488-conjugated LPS-mediated shift of macrophages but also reduced the intensity of fluorescent LPS bound to the macrophages transiently transfected with or without MyD88 siRNA. However, ursolic acid did not suppress NF-κB activation in peptidoglycan-stimulated macrophages. Oral administration of ursolic acid significantly inhibited 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colon shortening and myeloperoxidase (MPO) activity in mice. Ursolic acid also suppressed TNBS-induced COX-2 and iNOS expression as well as NF-κB activation in colon tissues. Ursolic acid (20 mg/kg) also inhibited TNBS-induced IL-1β, IL-6, TNF-α by 93, 86, and 85%, respectively (p < 0.05). However, ursolic acid reversed TNBS-mediated downregulation of IL-10 expression to 79% of the normal control group (p < 0.05). On the basis of these findings, ursolic acid may ameliorate colitis by regulating NF-κB and MAPK signaling pathways via the inhibition of LPS binding to TLR4 on immune cells.
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Affiliation(s)
- Se-Eun Jang
- Department of Life and Nanopharmaceutical Sciences, ‡Department of Food and Nutrition, and §Department of Pharmacy, Kyung Hee University , Seoul 130-701, Korea
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Zhang T, Su J, Wang K, Zhu T, Li X. Ursolic acid reduces oxidative stress to alleviate early brain injury following experimental subarachnoid hemorrhage. Neurosci Lett 2014; 579:12-7. [PMID: 25026072 DOI: 10.1016/j.neulet.2014.07.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 06/26/2014] [Accepted: 07/03/2014] [Indexed: 11/26/2022]
Abstract
Ursolic acid (UA), a well-known anti-oxidative reagent, has been reported to protect the brain against ischemic stoke. However, the potential role of UA in protecting against early brain injury (EBI) after subarachnoid hemorrhage (SAH) remains unclear. The present study aimed to examine the effect of UA against EBI following SAH, and to demonstrate whether the effect is associated with its powerful antioxidant property. Male SD rats were divided into vehicle-treated sham, vehicle-treated SAH, and UA-treated SAH groups. The endovascular puncture model was used to induce SAH and all the rats were subsequently sacrificed at 48h after SAH. The results show that UA administration could significantly attenuate EBI (including brain edema, blood-brain barrier disruption, neural cell apoptosis, and neurological deficient) after SAH in rats and up-regulate the antioxidative levels in the rat cerebral cortex, suggesting that administration of UA in experimental SAH rats could alleviate brain injury symptom, potentially through its powerful antioxidant property. Hence, we concluded that UA might be a novel therapeutic agent for EBI following SAH.
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Affiliation(s)
- Tingting Zhang
- Institute of Neurology, General Hospital of Shenyang Military Command, Shenyang, Liaoning 110016, China
| | - Jingyuan Su
- Institute of Neurology, General Hospital of Shenyang Military Command, Shenyang, Liaoning 110016, China
| | - Kaiwen Wang
- Institute of Neurology, General Hospital of Shenyang Military Command, Shenyang, Liaoning 110016, China
| | - Tingzhun Zhu
- Institute of Neurology, General Hospital of Shenyang Military Command, Shenyang, Liaoning 110016, China
| | - Xiaoming Li
- Institute of Neurology, General Hospital of Shenyang Military Command, Shenyang, Liaoning 110016, China.
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Chun J, Lee C, Hwang SW, Im JP, Kim JS. Ursolic acid inhibits nuclear factor-κB signaling in intestinal epithelial cells and macrophages, and attenuates experimental colitis in mice. Life Sci 2014; 110:23-34. [PMID: 24992474 DOI: 10.1016/j.lfs.2014.06.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 06/16/2014] [Accepted: 06/18/2014] [Indexed: 01/04/2023]
Abstract
AIMS Ursolic acid (UA), a natural pentacyclic triterpenoid acid, has been reported to show immunomodulatory activity. This study investigated the effects of UA on nuclear factor-kappa B (NF-κB) signaling in cells and experimental murine colitis. MAIN METHODS Human intestinal epithelial cells (IECs) COLO 205 and peritoneal macrophages from IL-10-deficient (IL-10(-/-)) mice were pretreated with UA and then stimulated with tumor necrosis factor-α (TNF-α) and lipopolysaccharide (LPS), respectively. The expression of pro-inflammatory cytokines was determined by real-time RT-PCR and ELISA. The effect of UA on NF-κB signaling was examined by immunoblot analysis to detect IκBα phosphorylation/degradation and electrophoretic mobility shift assay to assess the DNA binding activity of NF-κB. For in vivo studies, dextran sulfate sodium (DSS)-induced acute colitis in C57BL/6 wild-type mice and chronic colitis in IL-10(-/-) mice were treated with or without UA. Colitis was quantified by histopathologic evaluation. Immunohistochemical staining for phosphorylated IκBα was performed in the colonic tissue. KEY FINDINGS UA significantly inhibited the production of pro-inflammatory cytokines, IκBα phosphorylation/degradation and NF-κB DNA binding activity in both IEC and IL-10(-/-) peritoneal macrophages stimulated with TNF-α and LPS, respectively. UA significantly reduced the severity of DSS-induced murine colitis, as assessed by the disease activity index, colon length, and histopathology. UA also significantly ameliorated the severity of colitis in IL-10(-/-) mice. Furthermore, UA suppressed IκBα phosphorylation in the colonic tissue. SIGNIFICANCE UA inhibits NF-κB activation in both IECs and macrophages, and attenuates experimental murine colitis. These results suggest that UA is a potential therapeutic agent for inflammatory bowel disease.
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Affiliation(s)
- Jaeyoung Chun
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Changhyun Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Internal Medicine and Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Republic of Korea
| | - Sung Wook Hwang
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jong Pil Im
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Joo Sung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Ma JQ, Ding J, Xiao ZH, Liu CM. Ursolic acid ameliorates carbon tetrachloride-induced oxidative DNA damage and inflammation in mouse kidney by inhibiting the STAT3 and NF-κB activities. Int Immunopharmacol 2014; 21:389-95. [PMID: 24880019 DOI: 10.1016/j.intimp.2014.05.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 05/02/2014] [Accepted: 05/02/2014] [Indexed: 01/01/2023]
Abstract
Ursolic acid (UA), a common pentacyclic triterpenoid compound, has been reported to have many benefits and medicinal properties. However, its protective effects against carbon tetrachloride (CCl4) induced injury in kidneys are not yet clear. In the current report, we investigated whether UA inhibited the oxidative stress and inflammation in the kidneys of CCl4 treated mice. Male ICR mice were injected with CCl4 with or without UA co-administration (25 and 50mg/kg intragastrically once daily) for six weeks. Our data showed that UA significantly prevented CCl4-induced nephrotoxicity in a dose-dependent manner, indicated by both diagnostic indicators of kidney damage and histopathological analysis. Moreover, CCl4-induced profound elevation of ROS and oxidative stress, as evidenced by the increase of lipid peroxidation level and the depletion of the total antioxidant capacity (TAC) level in the kidney, was suppressed by treatment with UA. UA also decreased 8-hydroxy-2-deoxyguanosine (one product of oxidative DNA damage) levels. Furthermore, protein expression by Western blot analysis showed that UA significantly decreased production of pro-inflammatory markers including tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), interleukin-17 (IL-17) and cyclooxygenase-2 (COX-2) in CCl4-treated mouse kidney. In exploring the underlying mechanisms of UA action, we found that UA increased the phosphorylation of transcription 3 (STAT3), which in turn activated the nuclear factor kappa B (NF-kappaB) and the inflammatory cytokines in the kidneys. In conclusion, these results suggested that the inhibition of CCl4-induced inflammation by UA is due at least in part to its anti-oxidant activity and its ability to modulate the STAT3 and NF-κB signaling pathways.
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Affiliation(s)
- Jie-Qiong Ma
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, 643000 Zigong City, Sichuan Province, PR China.
| | - Jie Ding
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, 643000 Zigong City, Sichuan Province, PR China
| | - Zheng-Hua Xiao
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, 643000 Zigong City, Sichuan Province, PR China
| | - Chan-Min Liu
- School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tangshan New Area, 221116 Xuzhou City, Jiangsu Province, PR China
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Islam MS, Akhtar MM, Ciavattini A, Giannubilo SR, Protic O, Janjusevic M, Procopio AD, Segars JH, Castellucci M, Ciarmela P. Use of dietary phytochemicals to target inflammation, fibrosis, proliferation, and angiogenesis in uterine tissues: promising options for prevention and treatment of uterine fibroids? Mol Nutr Food Res 2014; 58:1667-84. [PMID: 24976593 DOI: 10.1002/mnfr.201400134] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 04/18/2014] [Accepted: 04/22/2014] [Indexed: 12/31/2022]
Abstract
Uterine leiomyomas (fibroids, myomas) are the most common benign tumors of female reproductive tract. They are highly prevalent, with 70-80% of women burdened by the end of their reproductive years. Fibroids are a leading cause of pelvic pain, abnormal vaginal bleeding, pressure on the bladder, miscarriage, and infertility. They are the leading indication for hysterectomy, and costs exceed 6 billion dollars annually in the United States. Unfortunately, no long-term medical treatments are available. Dysregulation of inflammatory processes are thought to be involved in the initiation of leiomyoma and extracellular matrix deposition, cell proliferation, and angiogenesis are the key cellular events implicated in leiomyoma growth. In modern pharmaceutical industries, dietary phytochemicals are used as source of new potential drugs for many kinds of tumors. Dietary phytochemicals may exert therapeutic effects by interfering with key cellular events of the tumorigenesis process. At present, a negligible number of phytochemicals have been tested as therapeutic agents against fibroids. In this context, our aim was to introduce some of the potential dietary phytochemicals that have shown anti-inflammatory, antiproliferative, antifibrotic, and antiangiogenic activities in different biological systems. This review could be useful to stimulate the evaluation of these phytochemicals as possible therapies for uterine fibroids.
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Affiliation(s)
- Md Soriful Islam
- Department of Experimental and Clinical Medicine, Faculty of Medicine, Polytechnic University of Marche, Ancona, Italy; Biotechnology and Microbiology Laboratory, Department of Botany, University of Rajshahi, Rajshahi, Bangladesh
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Ma JQ, Ding J, Zhang L, Liu CM. Ursolic acid protects mouse liver against CCl4-induced oxidative stress and inflammation by the MAPK/NF-κB pathway. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:975-83. [PMID: 24727148 DOI: 10.1016/j.etap.2014.03.011] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 03/12/2014] [Accepted: 03/16/2014] [Indexed: 06/03/2023]
Abstract
Ursolic acid (UA), a natural pentacyclic triterpenoid, has been reported to have many benefits and medicinal properties. However, its protective effects against carbon tetrachloride (CCl(4)) induced hepatotoxicity have not been clarified. The aim of the present study was to investigate the effects of UA on oxidative stress and inflammation in liver of CCl(4) treated mice. Male ICR mice were injected with CCl(4) with or without UA co-administration (25 and 50 mg/kg intragastrically once daily) for one week. Our data showed that UA significantly prevented CCl(4)-induced hepatotoxicity in a dose-dependent manner, indicated by both diagnostic indicators of liver damage (serum aminotransferase activities) and histopathological analysis. Moreover, CCl(4)-induced profound elevation of reactive oxygen species (ROS) production and oxidative stress, as evidenced by increasing of lipid peroxidation level and depleting of the total antioxidant capacity (TAC) level in liver, were suppressed by treatment with UA. Furthermore, western blot analysis showed that UA significantly decreased CYP2E1 expression levels and production of pro-inflammatory markers including TNF-α, IL-1β and COX-2 in CCl(4)-treated mouse liver. In exploring the underlying mechanisms of UA action, we found that UA decreased the activation of mitogen-activated protein kinases (JNK, p38 MAPK, ERK), which in turn inactivated the immunoregulatory transcription factor nuclear factor kappa B (NF-κB) in liver of CCl(4) treated mice. In conclusion, these results suggested that the inhibition of CCl(4)-induced inflammation by UA is due at least in part to its anti-oxidant activity and its ability to modulate the MAPK and NF-κB signaling pathway.
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Affiliation(s)
- Jie-Qiong Ma
- School of Chemistry and Pharmaceutical, Sichuan University of Science and Engineering, 643000 Zigong City, Sichuan Province, PR China.
| | - Jie Ding
- School of Chemistry and Pharmaceutical, Sichuan University of Science and Engineering, 643000 Zigong City, Sichuan Province, PR China
| | - Li Zhang
- School of Chemistry and Pharmaceutical, Sichuan University of Science and Engineering, 643000 Zigong City, Sichuan Province, PR China
| | - Chan-Min Liu
- School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tangshan New Area, Xuzhou City 221116, Jiangsu Province, PR China
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Pádua TA, de Abreu BSSC, Costa TEMM, Nakamura MJ, Valente LMM, Henriques MDG, Siani AC, Rosas EC. Anti-inflammatory effects of methyl ursolate obtained from a chemically derived crude extract of apple peels: potential use in rheumatoid arthritis. Arch Pharm Res 2014; 37:1487-95. [DOI: 10.1007/s12272-014-0345-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 01/26/2014] [Indexed: 01/16/2023]
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163
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Yang GX, Zhang RZ, Lou B, Cheng KJ, Xiong J, Hu JF. Chemical constituents from Melastoma dodecandrum and their inhibitory activity on interleukin-8 production in HT-29 cells. Nat Prod Res 2014; 28:1383-7. [PMID: 24697659 DOI: 10.1080/14786419.2014.903480] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In search of anti-inflammatory lead compounds from traditional Chinese medicines, a bioassay-guided phytochemical study on Melastoma dodecandrum was carried out. As a result, 18 compounds have been isolated. Their chemical structures were determined on the basis of their physicochemical properties and spectral data. Among the isolates, three pentacyclic triterpenoids, ursolic acid (1), asiatic acid (3) and terminolic acid (6), together with one tannin casuarinin (17), were found to significantly decrease interleukin-8 (IL-8) production in human colon cancer cells. The results imply, at least in part, that the anti-inflammatory effect of M. dodecandrum could be due to inhibition of IL-8 production, demonstrated by these naturally occurring compounds described above.
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Affiliation(s)
- Guo-Xun Yang
- a Department of Natural Products Chemistry , School of Pharmacy, Fudan University , No. 826 Zhangheng Road, Shanghai 201203 , P.R. China
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164
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Patwardhan RS, Sharma D, Checker R, Sandur SK. Mitigation of radiation-induced hematopoietic injury via regulation of cellular MAPK/phosphatase levels and increasing hematopoietic stem cells. Free Radic Biol Med 2014; 68:52-64. [PMID: 24287141 DOI: 10.1016/j.freeradbiomed.2013.11.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/31/2013] [Accepted: 11/05/2013] [Indexed: 11/22/2022]
Abstract
Here we describe a novel strategy for mitigation of ionizing radiation-induced hematopoietic syndrome by suppressing the activity of MKP3, resulting in ERK activation and enhanced abundance of hematopoietic stem cells, using the antioxidant flavonoid baicalein (5,6,7-trihydroxyflavone). It offered complete protection to mouse splenic lymphocytes against radiation-induced cell death. Inhibitors of ERK and Nrf-2 could significantly abrogate baicalein-mediated radioprotection in lymphocytes. Baicalein inhibited phosphatase MKP3 and thereby enhanced phosphorylation of ERK and its downstream proteins such as Elk and Nrf-2. It also increased the nuclear levels of Nrf-2 and the mRNA levels of its dependent genes. Importantly, baicalein administration to mice before radiation exposure led to significant recovery of loss of bone marrow cellularity and also inhibited cell death. Administration of baicalein increased the hematopoietic stem cell frequency as measured by side-population assay and also by antibody staining. Further, baicalein offered significant protection against whole-body irradiation (WBI; 7.5Gy)-induced mortality in mice. Interestingly, we found that baicalein works by activating the same target molecules ERK and Nrf-2 both in vitro and in vivo. Finally, administration of all-trans-retinoic acid (inhibitor of Nrf-2) significantly abrogated baicalein-mediated protection against WBI-induced mortality in mice. Thus, in contrast to the generalized conception of antioxidants acting as radioprotectors, we provide a rationale that antioxidants exhibit pleiotropic effects through the activation of multiple cellular signaling pathways.
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Affiliation(s)
- R S Patwardhan
- Radiation Biology and Health Sciences Division, Modular Laboratories, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Deepak Sharma
- Radiation Biology and Health Sciences Division, Modular Laboratories, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Rahul Checker
- Radiation Biology and Health Sciences Division, Modular Laboratories, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Santosh K Sandur
- Radiation Biology and Health Sciences Division, Modular Laboratories, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
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An ursolic acid-enriched extract of Cynomorium songaricum protects against carbon tetrachloride hepatotoxicity and gentamicin nephrotoxicity in rats possibly through a mitochondrial pathway: A comparison with ursolic acid. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.01.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Potent anti-inflammatory activity of pyrenocine A isolated from the marine-derived fungus Penicillium paxilli Ma(G)K. Mediators Inflamm 2014; 2014:767061. [PMID: 24574582 PMCID: PMC3916108 DOI: 10.1155/2014/767061] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 11/12/2013] [Accepted: 11/19/2013] [Indexed: 12/15/2022] Open
Abstract
Very little is known about the immunomodulatory potential of secondary metabolites isolated from marine microorganisms. In the present study, we characterized pyrenocine A, which is produced by the marine-derived fungus Penicillium paxilli Ma(G)K and possesses anti-inflammatory activity. Pyrenocine A was able to suppress, both pretreatment and posttreatment, the LPS-induced activation of macrophages via the inhibition of nitrite production and the synthesis of inflammatory cytokines and PGE2. Pyrenocine A also exhibited anti-inflammatory effects on the expression of receptors directly related to cell migration (Mac-1) as well as costimulatory molecules involved in lymphocyte activation (B7.1). Nitrite production was inhibited by pyrenocine A in macrophages stimulated with CpG but not Poly I:C, suggesting that pyrenocine A acts through the MyD88-dependent intracellular signaling pathway. Moreover, pyrenocine A is also able to inhibit the expression of genes related to NFκB-mediated signal transduction on macrophages stimulated by LPS. Our results indicate that pyrenocine A has promissory anti-inflammatory properties and additional experiments are necessary to confirm this finding in vivo model.
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Ullevig SL, Kim HS, Nguyen HN, Hambright WS, Robles AJ, Tavakoli S, Asmis R. Ursolic acid protects monocytes against metabolic stress-induced priming and dysfunction by preventing the induction of Nox4. Redox Biol 2014; 2:259-66. [PMID: 24494201 PMCID: PMC3909821 DOI: 10.1016/j.redox.2014.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 01/03/2014] [Indexed: 01/11/2023] Open
Abstract
AIMS Dietary supplementation with ursolic acid (UA) prevents monocyte dysfunction in diabetic mice and protects mice against atherosclerosis and loss of renal function. The goal of this study was to determine the molecular mechanism by which UA prevents monocyte dysfunction induced by metabolic stress. METHODS AND RESULTS Metabolic stress sensitizes or "primes" human THP-1 monocytes and murine peritoneal macrophages to the chemoattractant MCP-1, converting these cells into a hyper-chemotactic phenotype. UA protected THP-1 monocytes and peritoneal macrophages against metabolic priming and prevented their hyper-reactivity to MCP-1. UA blocked the metabolic stress-induced increase in global protein-S-glutathionylation, a measure of cellular thiol oxidative stress, and normalized actin-S-glutathionylation. UA also restored MAPK phosphatase-1 (MKP1) protein expression and phosphatase activity, decreased by metabolic priming, and normalized p38 MAPK activation. Neither metabolic stress nor UA supplementation altered mRNA or protein levels of glutaredoxin-1, the principal enzyme responsible for the reduction of mixed disulfides between glutathione and protein thiols in these cells. However, the induction of Nox4 by metabolic stress, required for metabolic priming, was inhibited by UA in both THP-1 monocytes and peritoneal macrophages. CONCLUSION UA protects THP-1 monocytes against dysfunction by suppressing metabolic stress-induced Nox4 expression, thereby preventing the Nox4-dependent dysregulation of redox-sensitive processes, including actin turnover and MAPK-signaling, two key processes that control monocyte migration and adhesion. This study provides a novel mechanism for the anti-inflammatory and athero- and renoprotective properties of UA and suggests that dysfunctional blood monocytes may be primary targets of UA and related compounds.
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Key Words
- Atherosclerosis
- GSH, reduced glutathione
- Grx, glutaredoxin
- HFD, high-fat diet
- HG, high d-glucose
- LDL, low-density lipoprotein
- MAPK, mitogen-activated protein kinase
- MCP-1, monocyte chemoattractant protein-1
- MKP-1, MAPK phosphatase-1
- Monocyte
- Nox4
- Nox4, NADPH oxidase 4
- OA, oleanolic acid
- PSSG, protein–glutathione mixed disulfide
- ROS, reactive oxygen species
- S-glutathionylation
- UA, ursolic acid
- Ursolic acid
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Affiliation(s)
- Sarah L. Ullevig
- Department of Kinesiology, Health, and Nutrition, University of Texas at San Antonio, United States
| | - Hong Seok Kim
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center, San Antonio, United States
| | - Huynh Nga Nguyen
- Department of Biochemistry, University of Texas Health Science Center, San Antonio, United States
| | - William S. Hambright
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, United States
| | - Andrew J. Robles
- Department of Pharmacology, University of Texas Health Science Center, San Antonio, United States
| | - Sina Tavakoli
- Department of Radiology, University of Texas Health Science Center, San Antonio, United States
| | - Reto Asmis
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center, San Antonio, United States
- Department of Biochemistry, University of Texas Health Science Center, San Antonio, United States
- Department of Radiology, University of Texas Health Science Center, San Antonio, United States
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169
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Plumbagin, a Vitamin K3 Analogue, abrogates Lipopolysaccharide-Induced Oxidative Stress, Inflammation and Endotoxic Shock via NF-κB Suppression. Inflammation 2013; 37:542-54. [DOI: 10.1007/s10753-013-9768-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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170
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Song B, Huang G, Tong C, Li G, Wang Z, Xiong Y, Zhang S, Lu J, Guan S. Gossypol suppresses mouse T lymphocytes via inhibition of NFκB, NFAT and AP-1 pathways. Immunopharmacol Immunotoxicol 2013; 35:615-21. [DOI: 10.3109/08923973.2013.830126] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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171
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He Y, Li Y, Zhao T, Wang Y, Sun C. Ursolic acid inhibits adipogenesis in 3T3-L1 adipocytes through LKB1/AMPK pathway. PLoS One 2013; 8:e70135. [PMID: 23922935 PMCID: PMC3724828 DOI: 10.1371/journal.pone.0070135] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 06/15/2013] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Ursolic acid (UA) is a triterpenoid compound with multiple biological functions. This compound has recently been reported to possess an anti-obesity effect; however, the mechanisms are less understood. OBJECTIVE As adipogenesis plays a critical role in obesity, the present study was conducted to investigate the effect of UA on adipogenesis and mechanisms of action in 3T3-L1 preadipocytes. METHODS AND RESULTS The 3T3-L1 preadipocytes were induced to differentiate in the presence or absence of UA for 6 days. The cells were determined for proliferation, differentiation, fat accumulation as well as the protein expressions of molecular targets that regulate or are involved in fatty acid synthesis and oxidation. The results demonstrated that ursolic acid at concentrations ranging from 2.5 µM to 10 µM dose-dependently attenuated adipogenesis, accompanied by reduced protein expression of CCAAT element binding protein β (C/EBPβ), peroxisome proliferator-activated receptor γ (PPARγ), CCAAT element binding protein α (C/EBPα) and sterol regulatory element binding protein 1c (SREBP-1c), respectively. Ursolic acid increased the phosphorylation of acetyl-CoA carboxylase (ACC) and protein expression of carnitine palmitoyltransferase 1 (CPT1), but decreased protein expression of fatty acid synthase (FAS) and fatty acid-binding protein 4 (FABP4). Ursolic acid increased the phosphorylation of AMP-activated protein kinase (AMPK) and protein expression of (silent mating type information regulation 2, homolog) 1 (Sirt1). Further studies demonstrated that the anti-adipogenic effect of UA was reversed by the AMPK siRNA, but not by the Sirt1 inhibitor nicotinamide. Liver kinase B1 (LKB1), the upstream kinase of AMPK, was upregulated by UA. When LKB1 was silenced with siRNA or the inhibitor radicicol, the effect of UA on AMPK activation was diminished. CONCLUSIONS Ursolic acid inhibited 3T3-L1 preadipocyte differentiation and adipogenesis through the LKB1/AMPK pathway. There is potential to develop UA into a therapeutic agent for the prevention or treatment of obesity.
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Affiliation(s)
- Yonghan He
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, People's Republic of China
- Aquatic and Crop Resource Development, Life Sciences Branch, National Research Council Canada, Charlottetown, Prince Edward Island, Canada
| | - Ying Li
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, People's Republic of China
| | - Tiantian Zhao
- Aquatic and Crop Resource Development, Life Sciences Branch, National Research Council Canada, Charlottetown, Prince Edward Island, Canada
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Yanwen Wang
- Aquatic and Crop Resource Development, Life Sciences Branch, National Research Council Canada, Charlottetown, Prince Edward Island, Canada
- Department of Biomedical Sciences, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada
| | - Changhao Sun
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, People's Republic of China
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172
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Malekinejad H, Shafie-Irannejad V, Hobbenaghi R, Tabatabaie SH, Moshtaghion SM. Comparative protective effect of hawthorn berry hydroalcoholic extract, atorvastatin, and mesalamine on experimentally induced colitis in rats. J Med Food 2013; 16:593-601. [PMID: 23875899 PMCID: PMC3719480 DOI: 10.1089/jmf.2012.2672] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 03/07/2013] [Indexed: 01/17/2023] Open
Abstract
The protective effect of hydroalcoholic extract of hawthorn berries (HBE) on acetic acid (AA)-induced colitis in rats was investigated. Forty-two Wistar rats were divided into seven groups, including control and test groups (n=6). The control animals received saline, and the test animals were treated with saline (sham group), mesalamine (50 mg/kg; M group), atorvastatin (20 mg/kg; A group), HBE (100 mg/kg; H group), mesalamine and HBE (HM group), or atorvastatin plus HBE (HA group), 3 days before and a week after colitis induction. Colitis was induced by administration of 1 mL AA (4%) via a polyethylene catheter intrarectally. High-performance liquid chromatography analyses showed that HBE contained 0.13% and 0.5% oleanolic acid and ursolic acid, respectively. Elevated myeloperoxidase activity and lipid peroxidation were attenuated in the HA group. The H and HM groups showed marked reductions in colitis-induced decreases in total thiol molecules and body weight. The histopathological studies revealed that HBE decreased colitis-induced edema and infiltration of neutrophils. Our data suggest the anti-inflammatory and antioxidant effects of HBE and atorvastatin protect against AA-induced colitis. The anti-inflammatory effect of HBE may be attributable to its ability to decrease myeloperoxidase activity as a biomarker of neutrophil infiltration.
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Affiliation(s)
- Hassan Malekinejad
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
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173
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Kumar D, Ghosh R, Pal BC. α-Glucosidase inhibitory terpenoids from Potentilla fulgens and their quantitative estimation by validated HPLC method. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.03.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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174
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Tsai TH, Chuang LT, Lien TJ, Liing YR, Chen WY, Tsai PJ. Rosmarinus officinalis extract suppresses Propionibacterium acnes-induced inflammatory responses. J Med Food 2013; 16:324-33. [PMID: 23514231 PMCID: PMC3624774 DOI: 10.1089/jmf.2012.2577] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 01/03/2013] [Indexed: 11/13/2022] Open
Abstract
Propionibacterium acnes is a key pathogen involved in the progression of acne inflammation. The development of a new agent possessing antimicrobial and anti-inflammatory activity against P. acnes is therefore of interest. In this study, we investigated the inhibitory effect of rosemary (Rosmarinus officinalis) extract on P. acnes-induced inflammation in vitro and in vivo. The results showed that ethanolic rosemary extract (ERE) significantly suppressed the secretion and mRNA expression of proinflammatory cytokines, including interleukin (IL)-8, IL-1β, and tumor necrosis factor-α in P. acnes-stimulated monocytic THP-1 cells. In an in vivo mouse model, concomitant intradermal injection of ERE attenuated the P. acnes-induced ear swelling and granulomatous inflammation. Since ERE suppressed the P. acnes-induced nuclear factor kappa-B (NF-κB) activation and mRNA expression of Toll-like receptor (TLR) 2, the suppressive effect of ERE might be due, at least partially, to diminished NF-κB activation and TLR2-mediated signaling pathways. Furthermore, three major constituents of ERE, carnosol, carnosic acid, and rosmarinic acid, exerted different immumodulatory activities in vitro. In brief, rosmarinic acid significantly suppressed IL-8 production, while the other two compounds inhibited IL-1β production. Further study is needed to explore the role of bioactive compounds of rosemary in mitigation of P. acnes-induced inflammation.
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Affiliation(s)
- Tsung-Hsien Tsai
- Department of Dermatology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Lu-Te Chuang
- Department of Biotechnology, Yuanpei University, Hsinchu, Taiwan
| | - Tsung-Jung Lien
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei, Taiwan
| | - Yau-Rong Liing
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei, Taiwan
| | - Wei-Yu Chen
- Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Po-Jung Tsai
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei, Taiwan
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175
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Delmastro-Greenwood MM, Piganelli JD. Changing the energy of an immune response. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL IMMUNOLOGY 2013; 2:30-54. [PMID: 23885324 PMCID: PMC3714201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 01/17/2013] [Indexed: 06/02/2023]
Abstract
The breakdown of nutrients into the critical energy source ATP is the general purpose of cellular metabolism and is essential for sustaining life. Similarly, the immune system is composed of different cell subsets that are indispensable for defending the host against pathogens and disease. The interplay between metabolic pathways and immune cells leads to a plethora of different signaling pathways as well as cellular activities. The activation of T cells via glycolysis-mediated upregulation of surface markers, for example, is necessary for an appropriate effector response against an infection. However, tight regulation of immune cell metabolism is required for protecting the host and resuming homeostasis. An imbalance of immunological metabolic function and/or metabolic byproducts (reactive oxygen species) can oftentimes lead to diseases. In the case of cancer, overactive glucose metabolism can lead to hyperproliferation of cells and subsequent decreases in cytotoxic T cell activity, which attack and destroy the tumor. For this reason and many more, targeting metabolism in immune cells may be a novel therapeutic strategy for treatment of disease. The metabolic pathways of immune cells and the possibilities of immunometabolic therapies will be discussed.
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Affiliation(s)
- Meghan M Delmastro-Greenwood
- Diabetes Institute, Division of Immunogenetics, Department of Pediatrics, Rangos Research Center, Children’s Hospital of Pittsburgh of UPMC4401 Penn Avenue, Pittsburgh, PA 15224, USA
- Department of Immunology, University of Pittsburgh School of MedicinePittsburgh, PA 15260, USA
| | - Jon D Piganelli
- Diabetes Institute, Division of Immunogenetics, Department of Pediatrics, Rangos Research Center, Children’s Hospital of Pittsburgh of UPMC4401 Penn Avenue, Pittsburgh, PA 15224, USA
- Department of Immunology, University of Pittsburgh School of MedicinePittsburgh, PA 15260, USA
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Li L, Zhang X, Cui L, Wang L, Liu H, Ji H, Du Y. Ursolic acid promotes the neuroprotection by activating Nrf2 pathway after cerebral ischemia in mice. Brain Res 2013; 1497:32-9. [PMID: 23276496 DOI: 10.1016/j.brainres.2012.12.032] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 12/04/2012] [Accepted: 12/24/2012] [Indexed: 01/09/2023]
Abstract
BACKGROUND Oxidative and inflammatory damages have been suggested to play an important role in cerebral ischemic pathogenesis, and provide promising therapeutic strategies for stroke. Nuclear factor-erythroid 2-related factor 2 (Nrf2), a pleiotropic transcription factor, has been shown to play a key role in protecting cells against oxidative injury in cerebral ischemia. In this study, we demonstrated the hypothesis that ursolic acid (UA), a natural pentacyclic triterpenoid acid, isolated from edible plants in the Oleaceae family, a well-known anti-oxidative and anti-inflammatory reagent, protects the brain against ischemic injury by activating the Nrf2 pathway. METHODS Nrf2(-/-) and wild-type (WT) mice were induced into focal cerebral ischemia by transient middle cerebral artery occlusion (MCAO), and received UA treatment immediately after MCAO. The behavioral dysfunction, infarct size, and the expression of Nrf2, HO-1 and inflammatory factors (TLR4 and NF-κB) in ischemic brain were measured at 24h after stroke. RESULTS UA treatment significantly improved neurological deficit and reduced infarct size in WT mice after MCAO. Administration of UA also decreased the product of lipid peroxidation, promoted the activation of Nrf2 pathway and decreased the expression of TLR4 and NF-KB after stroke in WT mice. However, Nrf2(-/-) mice demonstrated more severe neurologic deficits, infarct size and inflammatory damage after MCAO, and did not benefit from the protective effect of UA. CONCLUSION The results indicated that UA protected the brain against ischemic injury in mice by anti-oxidative and anti-inflammatory effects after MCAO. Activation of the Nrf2 pathway contributes to the neuroprotective effects induced by UA in cerebral ischemia.
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Affiliation(s)
- Litao Li
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China
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177
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Wang XH, Zhou SY, Qian ZZ, Zhang HL, Qiu LH, Song Z, Zhao J, Wang P, Hao XS, Wang HQ. Evaluation of toxicity and single-dose pharmacokinetics of intravenous ursolic acid liposomes in healthy adult volunteers and patients with advanced solid tumors. Expert Opin Drug Metab Toxicol 2013; 9:117-25. [PMID: 23134084 DOI: 10.1517/17425255.2013.738667] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate the maximum tolerated dose (MTD), dose-limiting toxicity (DLT), and pharmacokinetics of ursolic acid liposomes (UAL), as a new drug, in healthy adult volunteers and patients with advanced solid tumors. METHODS All subjects received a single-dose of UAL (11, 22, 37, 56, 74, 98, and 130 mg/m(2)) administered as a 4-h intravenous infusion. Toxicity was assessed and plasma samples were analyzed using validated ultra-performance liquid chromatograph/tandem mass spectroscopy method. RESULTS A total of 63 subjects including 4 patients and 35 healthy adult volunteers for toxicity study and 24 healthy adult volunteers for pharmacokinetic study were enrolled in this trial. The DLT was encountered at 74, 98, and 130 mg/m(2), and consisted of hepatotoxicity and diarrhea. Other adverse events included grade 1 nausea, grade 2 abdominal distention, grade 1 microscopic hematuria, grade 2 elevated serum sodium, grade 1 vascular stimulation, and grade 1 skin rash. The MTD was 98 mg/m(2). The single-dose pharmacokinetic parameters revealed a linear relationship between C(max), AUC(0→24 h), or AUC(0→∞) and escalated doses. CONCLUSIONS The clinical data reported for the first time that UAL had manageable toxicities with MTD of 98 mg/m(2). The DLT were hepatotoxicity and diarrhea. Meanwhile, UAL had a linear pharmacokinetic profile. The registration number of this trial is ChiCTR-ONC-12002385.
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Affiliation(s)
- Xian-Huo Wang
- Tianjin Medical University, Tianjin Medical University Cancer Hospital and Institute, Sino-US Center for Lymphoma and Leukemia, Department of Lymphoma, Key Laboratory of Cancer Prevention and Therapy, Tiyuanbei, Huanhuxi Road, Hexi District, Tianjin 300060, China
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Bowen WS, Gandhapudi SK, Kolb JP, Mitchell TC. Immunopharmacology of Lipid A Mimetics. ADVANCES IN PHARMACOLOGY 2013; 66:81-128. [DOI: 10.1016/b978-0-12-404717-4.00003-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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179
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Chen X, Wan Y, Zhou T, Li J, Wei Y. Ursolic acid attenuates lipopolysaccharide-induced acute lung injury in a mouse model. Immunotherapy 2013; 5:39-47. [PMID: 23256797 DOI: 10.2217/imt.12.144] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
AIM To assess whether ursolic acid (UA) can attenuate lipopolysachharide (LPS)-induced acute lung injury and improve the survival time in a mouse model. MATERIALS & METHODS The mice were challenged with LPS and survival time was monitored from 0-96 h after LPS treatment. TNF-α, IL-6, IL-1β, HMGB1, nitric oxide (NO) and IL-10 concentration in serum were measured by ELISA. Myeloperoxidase activity, malondialdehyde, lung wet:dry weight ratio and lung permeability in lung tissues were detected. NF-κB, HMGB1 and inducible NO synthase in the lungs were detected by western blot. RESULTS UA markedly rescued lethality, improved survival time and lung pathological changes, inhibited TNF-α, IL-6, IL-1β, HMGB1 and NO, and increased IL-10 expression. In addition, UA can also decrease myeloperoxidase, malondialdehyde, lung wet:dry weight ratio and lung permeability. UA attenuated NF-κB, HMGB1 and inducible NO synthase protein expression in the lungs. CONCLUSION The results suggest that UA is capable of improving survival time and LPS-induced acute lung injury. UA has a potentially therapeutic role in septic shock.
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Affiliation(s)
- Xiangjun Chen
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, 1# Keyuan Road 4, Gao-peng Street, High Technological Development Zone, Chengdu, 610041, PR China
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Kaewthawee N, Brimson S. The effects of ursolic acid on cytokine production via the MAPK pathways in leukemic T-cells. EXCLI JOURNAL 2013. [PMID: 26417220 DOI: 10.17877/de290r-10658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Ursolic acid (UA) is a pentacyclic triterpenoid carboxylic acid that is found in plants and herbal products. It is one of the chemopreventive agents, which can suppress cancer cell proliferation and induce apoptosis. UA possesses various biological activities including anticancer, anti-inflammatory, anti-oxidative and hepatoprotective activity. We investigated the effect of UA on cytokine production via the MAPK pathways in Jurkat leukemic T-cells, showing that UA inhibited cell growth and proliferation of Jurkat cells, as well as suppressing PMA/PHA induced IL-2 and TNF-α production in a concentration and time dependent manner. The inhibition of IL-2 and TNF-α production by UA involved the c-Jun N-terminal kinase (JNK) pathway, but not the extracellular-signal regulated protein kinase (ERK) pathway. Future utilization of UA as a chemopreventive or therapeutic agent may provide an alternative option for leukemia treatments.
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Affiliation(s)
- Narawan Kaewthawee
- Graduate Program in Clinical Hematology Sciences, Department of Clinical Microscopy, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sirikalaya Brimson
- Center for Research and Development in Molecular Hematology Sciences, Department of Clinical Microscopy, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Erbano M, Ehrenfried CA, Stefanello MÉA, Dos Santos EP. Morphoanatomical and phytochemical studies of Salvia lachnostachys (Lamiaceae). Microsc Res Tech 2012; 75:1737-44. [PMID: 22972766 DOI: 10.1002/jemt.22125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 08/16/2012] [Indexed: 01/20/2023]
Abstract
Salvia lachnostachys Benth., Lamiaceae, is a endemic species from southern Brazil. The essential oil of its leaves and flowers is mainly constituted by aliphatic compounds, such as dodecanoic acid, with sesquiterpenes as minor constituents. This work evaluated the morphology, anatomy, microchemistry, and phytochemistry of S. lachnostachys to provide advanced knowledge of Brazilian plants with medicinal potential. Light and scanning electron microscopy techniques were used in the anatomical and microchemical studies. Compounds were isolated by chromatographic techniques, identified by analysis of their NMR spectra and compared with published data. S. lachnostachys can be distinguished from other related species mainly by its petiolate leaves, terminal inflorescence, persistent bracts, and villous-glandular corolla. The stem and leaves of S. lachnostachys display anatomical characteristics common to the family Lamiaceae. However, this species can be distinguished from other family members by the morphology and the presence of eglandular and glandular trichomes, as well as the organization of the vascular bundles of the petiole. The phytochemical results revealed that S. lacnostachys produces oleanolic and ursolic acids in addition to the diterpene fruticuline A, which is a rare compound, previously found only in Salvia fruticulosa Benth. and S. corrugata Vahl. Ursolic and oleanolic acids are bioactive triterpenes that exhibit antiatherosclerotic, anticancer, antihypertensive, antinflammatory, antileukemic, antimutagenic, antioxidant, antiproliferative, and antiviral activities, and fruticuline A has antibacterial activity.
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Affiliation(s)
- Marianna Erbano
- Laboratório Multiusuário de Biologia Molecular, Departamento de Botânica, Universidade Federal do Paraná, Caixa Postal 19031, 81531-990, Curitiba, Paraná, Brazil
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Analgesic and Anti-Inflammatory Activities of Methanol Extract of Cissus repens in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:135379. [PMID: 22991570 PMCID: PMC3443613 DOI: 10.1155/2012/135379] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 07/25/2012] [Accepted: 08/05/2012] [Indexed: 12/04/2022]
Abstract
The aim of this study was to investigate possible analgesic and anti-inflammatory mechanisms of the CRMeOH. Analgesic effect was evaluated in two models including acetic acid-induced writhing response and formalin-induced paw licking. The anti-inflammatory effect was evaluated by λ-carrageenan-induced mouse paw edema and histopathologic analyses. The results showed that CRMeOH (500 mg/kg) decreased writhing response in the acetic acid assay and licking time in the formalin test. CRMeOH (100 and 500 mg/kg) significantly decreased edema paw volume at 4th to 5th hours after λ-carrageenan had been injected. Histopathologically, CRMeOH abated the level of tissue destruction and swelling of the edema paws. These results were indicated that anti-inflammatory mechanism of CRMeOH may be due to declined levels of NO and MDA in the edema paw through increasing the activities of SOD, GPx, and GRd in the liver. Additionally, CRMeOH also decreased IL-1β, IL-6, NFκB, TNF-α, COX-2, and iNOS levels. The contents of two active ingredients, ursolic acid and lupeol, were quantitatively determined. This paper demonstrated possible mechanisms for the analgesic and anti-inflammatory effects of CRMeOH and provided evidence for the classical treatment of Cissus repens in inflammatory diseases.
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