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Hu X, Zhao S, Guo Z, Zhu Y, Zhang S, Li D, Shu G. Tetramethylpyrazine Antagonizes the Subchronic Cadmium Exposure-Induced Oxidative Damage in Mouse Livers via the Nrf2/HO-1 Pathway. Molecules 2024; 29:1434. [PMID: 38611714 PMCID: PMC11013177 DOI: 10.3390/molecules29071434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/13/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
Hepatic oxidative stress is an important mechanism of Cd-induced hepatotoxicity, and it is ameliorated by TMP. However, this underlying mechanism remains to be elucidated. To investigate the mechanism of the protective effect of TMP on liver injuries in mice induced by subchronic cadmium exposure, 60 healthy male ICR mice were randomly divided into five groups of 12 mice each, namely, control (CON), Cd (2 mg/kg of CdCl2), Cd + 100 mg/kg of TMP, Cd + 150 mg/kg of TMP, and Cd + 200 mg/kg of TMP, and were acclimatized and fed for 7 d. The five groups of mice were gavaged for 28 consecutive days with a maximum dose of 0.2 mL/10 g/day. Except for the control group, all groups were given fluoride (35 mg/kg) by an intraperitoneal injection on the last day of the experiment. The results of this study show that compared with the Cd group, TMP attenuated CdCl2-induced pathological changes in the liver and improved the ultrastructure of liver cells, and TMP significantly decreased the MDA level (p < 0.05) and increased the levels of T-AOC, T-SOD, and GSH (p < 0.05). The results of mRNA detection show that TMP significantly increased the levels of Nrf2 in the liver compared with the Cd group as well as the HO-1 and mRNA expression levels in the liver (p < 0.05). In conclusion, TMP could inhibit oxidative stress and attenuate Cd group-induced liver injuries by activating the Nrf2 pathway.
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Affiliation(s)
- Xue Hu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (X.H.); (S.Z.); (Z.G.); (Y.Z.); (S.Z.)
| | - Siqi Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (X.H.); (S.Z.); (Z.G.); (Y.Z.); (S.Z.)
| | - Ziming Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (X.H.); (S.Z.); (Z.G.); (Y.Z.); (S.Z.)
| | - Yiling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (X.H.); (S.Z.); (Z.G.); (Y.Z.); (S.Z.)
| | - Shuai Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (X.H.); (S.Z.); (Z.G.); (Y.Z.); (S.Z.)
| | - Danqin Li
- College of Veterinary Medicine, Kansas State University, 1700 Denison Ave., Manhattan, KS 66502, USA
| | - Gang Shu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (X.H.); (S.Z.); (Z.G.); (Y.Z.); (S.Z.)
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Zhang L, Wang X, Lu X, Ma Y, Xin X, Xu X, Wang S, Hou Y. Tetramethylpyrazine enhanced the therapeutic effects of human umbilical cord mesenchymal stem cells in experimental autoimmune encephalomyelitis mice through Nrf2/HO-1 signaling pathway. Stem Cell Res Ther 2020; 11:186. [PMID: 32430010 PMCID: PMC7238657 DOI: 10.1186/s13287-020-01700-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/15/2020] [Accepted: 04/28/2020] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION The therapeutic effects of mesenchymal stem cells (MSCs) have been limited by their apoptosis induced by oxidative stress after delivery into the injured sites. Therefore, strategies designed to improve the MSC therapeutic efficacy need to be explored. Tetramethylpyrazine (TMP) can promote the proliferation and differentiation of neural stem cells. In this study, we first evaluated the effects and mechanism of TMP on H2O2-stimulated human umbilical cord MSCs (hUCMSCs) and then further investigated the therapeutic effects of TMP-stimulated hUCMSCs on experimental autoimmune encephalomyelitis (EAE) mice. METHODS The toxicity of hUCMSCs against of TMP was determined by cell count kit-8 (CCK-8) assay. The effects of TMP on the hUCMSC cell cycle, the reactive oxygen species (ROS) production, and the apoptosis of H2O2-stimulated hUCMSCs were determined by flow cytometry. The expression of malondialdehyde (MDA) and superoxide dismutase (SOD) were also measured by colorimetry. The signaling pathway of TMP induced on H2O2-stimulated hUCMSCs was investigated by western blot. EAE was induced using immunization with MOG35-55 in C57BL/6 mice. The inflammatory cell infiltration and demyelination were detected by immunofluorescence staining. The blood-brain barrier (BBB) disruption was detected by Evans blue (EB) stain and the expression of tight junction protein (ZO-1) by western blot. RESULTS TMP significantly increased cell viability and changed the cell cycle of hUCMSCs. In addition, TMP (100 μM) significantly reduced intracellular ROS production, expression of MDA, and apoptosis, but increased expression of SOD through nuclear factor-erythroid 2-related factor-2 (Nrf2)/heme oxygenase 1 (HO-1) signaling pathway in H2O2-stimulated hUCMSCs. Most importantly, compared with wild hUCMSCs, TMP-stimulated hUCMSCs significantly ameliorated EAE, by attenuation of inflammation, demyelination, and BBB disruption. CONCLUSION The TMP-stimulated hUCMSCs provide a potential therapeutical protocol to enhance the therapeutic effects of hUCMSCs in multiple sclerosis.
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Affiliation(s)
- Lianshuang Zhang
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Xifeng Wang
- Department of Critical Care Medicine, Yu Huang Ding Hospital, Qingdao University, Yantai, China
| | - Xueyan Lu
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Yanchao Ma
- Department of Immunology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Xin Xin
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Xiaomin Xu
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Siyuan Wang
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Yun Hou
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, China.
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Liu Y, Li X, Jiang S, Ge Q. Tetramethylpyrazine protects against high glucose-induced vascular smooth muscle cell injury through inhibiting the phosphorylation of JNK, p38MAPK, and ERK. J Int Med Res 2018; 46:3318-3326. [PMID: 29996693 PMCID: PMC6134667 DOI: 10.1177/0300060518781705] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Objectives High glucose-induced alterations in vascular smooth muscle cell behavior have not been fully characterized. We explored the protective mechanism of tetramethylpyrazine (TMP) on rat smooth muscle cell injury induced by high glucose via the mitogen-activated protein kinase (MAPK) signaling pathway. Methods Vascular smooth muscle cells (VSMCs) isolated from rat thoracic aortas were divided into control, high glucose (HG), and pre-hatching TMP groups. The effect of different glucose concentrations on cell viability and on the migration activity of VSMC cells was examined using MTT analysis and the wound scratch assay, respectively. Superoxide dismutase (SOD) and malondialdehyde (MDA) levels were measured using enzyme-linked immunoassays. The levels of extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), and p38MAPK, and MAPK phosphorylation were assessed by western blotting. Results Cell proliferation was remarkably increased by increased glucose concentrations. Compared with the HG group, the migratory ability of VSMC cells was reduced in the presence of TMP. TMP also decreased the MDA content in the supernatant, but significantly increased the SOD activity. Western blotting showed that TMP inhibited the phosphorylation of JNK, p38MAPK, and ERK. Conclusions TMP appears to protect against HG-induced VSMC injury through inhibiting reactive oxygen species overproduction, and p38MAPK/JNK/ERK phosphorylation.
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Affiliation(s)
- Yutao Liu
- 1 Department of Pharmacy, Yantaishan Hospital, Yantai, Shandong, China
| | - Xu Li
- 2 Department of Pharmacy, Yantai Hospital of Infectious Diseases, Yantai, Shandong, China
| | - Shanling Jiang
- 3 Department of Pharmacy, The Affiliated Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, China
| | - Quanli Ge
- 1 Department of Pharmacy, Yantaishan Hospital, Yantai, Shandong, China
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Shen J, Zeng L, Pan L, Yuan S, Wu M, Kong X. Tetramethylpyrazine regulates breast cancer cell viability, migration, invasion and apoptosis by affecting the activity of Akt and caspase-3. Oncol Lett 2018. [PMID: 29541225 DOI: 10.3892/ol.2018.7851] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Tetramethylpyrazine (TMP), an effective component of the traditional Chinese medicine Chuanxiong Hort, has been proven to exhibit a beneficial effect in a number of types of malignant epithelial cancer. However, the mode of action of TMP on breast cancer cells remains unknown. The aim of the present study was to investigate the regulatory effect of TMP on breast cancer cells and its underlying molecular mechanism of action. Different concentrations of TMP were used to treat breast cancer cells, and subsequently, the effects on the viability, apoptosis, and migration and invasion abilities were determined. In addition, the expression and activity levels of the protein kinase B (Akt) signaling pathway and caspase-3 were explored via reverse transcription-quantitative polymerase chain reaction and western blot analysis. The results of the present study revealed that TMP significantly inhibited the viability, migration and invasion rates, and increased the apoptosis of MDA-MB-231 cells in a dose-dependent manner. The minimum effective dose was ~1,600 µM. Additional mechanistic studies demonstrated that 1,600 and 3,200 µM TMP significantly decreased the gene expression and activity of Akt and increased the activity of caspase-3. This mechanism may be responsible for the inhibition of viability, migration and invasion, and activation of apoptosis in breast cancer cells. The results of the present study suggested that TMP may be used in chemotherapy against breast cancer.
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Affiliation(s)
- Jianliang Shen
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai 201505, P.R. China
| | - Linwen Zeng
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai 201505, P.R. China
| | - Liangming Pan
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai 201505, P.R. China
| | - Shaofeng Yuan
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai 201505, P.R. China
| | - Ming Wu
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai 201505, P.R. China
| | - Xiongdong Kong
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai 201505, P.R. China
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Fang Y, Chu L, Li L, Wang J, Yang Y, Gu J, Zhang J. Tetramethylpyrazine Protects Bone Marrow-Derived Mesenchymal Stem Cells against Hydrogen Peroxide-Induced Apoptosis through PI3K/Akt and ERK1/2 Pathways. Biol Pharm Bull 2017; 40:2146-2152. [PMID: 28978811 DOI: 10.1248/bpb.b17-00524] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bone marrow-derived mesenchymal stem cells (BMSCs) transplantation is one of the new therapeutic strategies for treating ischemic stroke. However, the poor survival rate of transplanted BMSCs in ischemic tissue limits the therapeutic efficacy of this approach. Oxidative stress is a major mechanism underlying the pathogenesis of brain ischemia and has a negative impact on the survival of transplanted BMSCs. Tetramethylpyrazine (TMP) has been reported to possess potent antioxidant activity. In the present study, we aimed to investigate the protective effects of TMP pretreatment on BMSCs survival of hydrogen peroxide (H2O2)-induced apoptosis in vitro and to elucidate the potential antiapoptotic mechanisms of TMP pretreatment on BMSCs. BMSCs were pretreated with TMP (10, 25, 50, 100, and 200 µmol/L) for 24 h and then exposed to 500 µmol/L of H2O2 for 24 h. We found that TMP pretreatment significantly increased cell viability and decreased cell apoptosis and intracellular reactive oxygen species (ROS) generation. Furthermore, the protective effects of TMP were related to increased Bcl-2 expression, attenuated Bax expression, and enhanced levels of phosphorylated Akt (p-Akt) and extracellular regulated protein kinases1/2 (p-ERK1/2). Further studies found that these beneficial effects of TMP were significantly blocked by wortmannin (an inhibitor of phosphoinositide-3 kinase (PI3K)) or PD98059 (an inhibitor of ERK1/2). In conclusion, our results confirm that TMP protects BMSCs against H2O2-induced apoptosis by regulating the PI3K/Akt and ERK1/2 signaling pathways, suggesting that TMP may be used in combination with BMSCs to improve cell survival for the treatment of ischemic stroke.
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Affiliation(s)
- Yan Fang
- Department of Physiology, Zhejiang Chinese Medical University
| | - Lisheng Chu
- Department of Physiology, Zhejiang Chinese Medical University
| | - Lin Li
- Department of Physiology, Zhejiang Chinese Medical University
| | - Jun Wang
- Department of Physiology, Zhejiang Chinese Medical University
| | - Yan Yang
- Department of Physiology, Zhejiang Chinese Medical University
| | - Jingjing Gu
- Department of Pathology, Zhejiang Chinese Medical University
| | - Jianping Zhang
- Department of Anatomy and Embryology, Zhejiang Chinese Medical University
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Mechanisms and Clinical Application of Tetramethylpyrazine (an Interesting Natural Compound Isolated from Ligusticum Wallichii): Current Status and Perspective. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:2124638. [PMID: 27668034 PMCID: PMC5030435 DOI: 10.1155/2016/2124638] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/09/2016] [Indexed: 01/09/2023]
Abstract
Tetramethylpyrazine, a natural compound from Ligusticum wallichii (Chuan Xiong), has been extensively used in China for cardiovascular and cerebrovascular diseases for about 40 years. Because of its effectiveness in multisystems, especially in cardiovascular, its pharmacological action, clinical application, and the structural modification have attracted broad attention. In this paper its mechanisms of action, the clinical status, and synthetic derivatives will be reviewed briefly.
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Wang S, Lei T, Zhang M. The Reversal Effect and Its Mechanisms of Tetramethylpyrazine on Multidrug Resistance in Human Bladder Cancer. PLoS One 2016; 11:e0157759. [PMID: 27391608 PMCID: PMC4938409 DOI: 10.1371/journal.pone.0157759] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 06/03/2016] [Indexed: 01/11/2023] Open
Abstract
Chemotherapy is an important strategy for the treatment of bladder cancer. However, the main problem limiting the success of chemotherapy is the development of multidrug resistance (MDR). To improve the management of bladder cancer, it is an urgent matter to search for strategies to reverse MDR. We chose three kinds of herbal medicines including ginsenoside Rh2, (-)-Epigallocatechin gallate (EGCG) and Tetramethylpyrazine (TMP) to detect their effects on bladder cancer. Reversal effects of these three herbal medicines for drug resistance in adriamycin (ADM)-resistant Pumc-91 cells (Pumc-91/ADM) were assessed by Cell Counting Kit-8 (CCK-8) cell proliferation assay system. The mechanisms of reversal effect for TMP were explored in Pumc-91/ADM and T24/DDP cells. After Pumc-91/ADM and T24/DDP cells were treated with TMP, cell cycle distribution analysis was performed by flow cytometry. The expression of MRP1, GST, BCL-2, LRP and TOPO-II was evaluated using quantitative real-time polymerase chain reaction (qRT-PCR), immunefluorescence assay and western blot. It was observed that TMP was capable of enhancing the cytotoxicity of anticancer agents on Pumc-91/ADM cells in response to ADM, however Rh2 and EGCG were unable to. The reversal effect of TMP was also demonstrated in T24/DDP cells. Moreover, the treatment with TMP in Pumc-91/ADM and T24/DDP cells led to an increased of G1 phase accompanied with a concomitant decrease of cell numbers in S phase. Compared to the control group, an obvious decrease of MRP1, GST, BCL-2 and an increase of TOPO-II were shown in TMP groups with a dose-dependency in mRNA and protein levels. However, there was no difference on LRP expression between TMP groups and the control group. TMP could effectively reverse MDR of Pumc-91/ADM and T24/DDP cells and its mechanisms might be correlated with the alteration of MRP1, GST, BCL-2 and TOPO-II. TMP might be a potential candidate for reversing drug resistance in bladder cancer chemotherapy.
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Affiliation(s)
- Shanshan Wang
- Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing, China
| | - Ting Lei
- Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing, China
| | - Man Zhang
- Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing, China
- * E-mail:
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Cardiovascular Actions and Therapeutic Potential of Tetramethylpyrazine (Active Component Isolated from Rhizoma Chuanxiong): Roles and Mechanisms. BIOMED RESEARCH INTERNATIONAL 2016; 2016:2430329. [PMID: 27314011 PMCID: PMC4893570 DOI: 10.1155/2016/2430329] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/07/2016] [Accepted: 04/27/2016] [Indexed: 01/02/2023]
Abstract
Tetramethylpyrazine (TMP), a pharmacologically active component isolated from the rhizome of the Chinese herb Rhizoma Chuanxiong (Chuanxiong), has been clinically used in China and Southeast Asian countries for the prevention and treatment of cardiovascular diseases (CVDs) for about fifty years. The pharmacological effects of TMP on the cardiovascular system have attracted great interest. Emerging experimental studies and clinical trials have demonstrated that TMP prevents atherosclerosis as well as ischemia-reperfusion injury. The cardioprotective effects of TMP are mainly related to its antioxidant, anti-inflammatory, or calcium-homeostasis effects. This review focuses on the roles and mechanisms of action of TMP in the cardiovascular system and provides a novel perspective on TMP's clinical use.
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Hwang GH, Jeon YJ, Han HJ, Park SH, Baek KM, Chang W, Kim JS, Kim LK, Lee YM, Lee S, Bae JS, Jee JG, Lee MY. Protective effect of butylated hydroxylanisole against hydrogen peroxide-induced apoptosis in primary cultured mouse hepatocytes. J Vet Sci 2015; 16:17-23. [PMID: 25798044 PMCID: PMC4367145 DOI: 10.4142/jvs.2015.16.1.17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 08/20/2014] [Accepted: 07/10/2014] [Indexed: 01/12/2023] Open
Abstract
Butylated hydroxyanisole (BHA) is a synthetic phenolic compound consisting of a mixture of two isomeric organic compounds: 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole. We examined the effect of BHA against hydrogen peroxide (H2O2)-induced apoptosis in primary cultured mouse hepatocytes. Cell viability was significantly decreased by H2O2 in a dose-dependent manner. Additionally, H2O2 treatment increased Bax, decreased Bcl-2, and promoted PARP-1 cleavage in a dose-dependent manner. Pretreatment with BHA before exposure to H2O2 significantly attenuated the H2O2-induced decrease of cell viability. H2O2 exposure resulted in an increase of intracellular reactive oxygen species (ROS) generation that was significantly inhibited by pretreatment with BHA or N-acetyl-cysteine (NAC, an ROS scavenger). H2O2-induced decrease of cell viability was also attenuated by pretreatment with BHA and NAC. Furthermore, H2O2-induced increase of Bax, decrease of Bcl-2, and PARP-1 cleavage was also inhibited by BHA. Taken together, results of this investigation demonstrated that BHA protects primary cultured mouse hepatocytes against H2O2-induced apoptosis by inhibiting ROS generation.
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Affiliation(s)
- Geun Hye Hwang
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
| | - Yu Jin Jeon
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
| | - Ho Jae Han
- Department of Veterinary Physiology, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea
| | - Soo Hyun Park
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
| | - Kyoung Min Baek
- Department of Cardiovascular and Neurologic Disease, College of Oriental Medicine, Daegu Haany University, Daegu 706-828, Korea
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735, Korea
| | - Joong Sun Kim
- Research Center, Dongnam Institute of Radiological and Medical Sciences, Busan 619-953, Korea. ; Department of Veterinary Anatomy, College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
| | - Lark Kyun Kim
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - You-Mie Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
| | - Sangkyu Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
| | - Jong-Sup Bae
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
| | - Jun-Goo Jee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
| | - Min Young Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
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Tetramethylpyrazine enhances vascularization and prevents osteonecrosis in steroid-treated rats. BIOMED RESEARCH INTERNATIONAL 2015; 2015:315850. [PMID: 25759816 PMCID: PMC4339822 DOI: 10.1155/2015/315850] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 01/20/2015] [Accepted: 01/20/2015] [Indexed: 11/18/2022]
Abstract
Steroid-induced osteonecrosis of the femoral head (steroid-induced ONFH) is an avascular necrosis disease of bone. Tetramethylpyrazine (TMP), with significant vascular protective properties, has been widely used for the treatments of ischemic neural disorders and cardiovascular diseases. However, its role in the treatment of steroid-induced ONFH has not been evaluated. In this study, our results showed that TMP significantly decreased the ratio of empty lacuna, adipose tissue area, and adipocyte perimeter in steroid-induced ONFH rats histopathologically. TMP also reduced the levels of serum lipid dramatically by haematological examination. According to the micro-CT quantification, TMP could improve the microstructure of the trabecular bone and increases bone mineral density in steroid-induced ONFH rats. Moreover, TMP significantly increased the vessel volume, vessel surface, percentage of vessel volume, and vessel thickness of the femoral heads by micro-CT. Interestingly, the downregulation of VEGF and FLK1 proteins in the sera and necrotic femoral heads could be reversed by TMP treatment, and this was true for their mRNA expressions in femoral heads. In conclusion, these findings suggest for the first time that TMP may prevent steroid-induced ONFH and also enhance femoral head vascularization by inhibiting the effect of steroid on VEGF/FLK1 signal pathway.
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Li N, Deng XG, Zhang SH, He MF, Zhao DQ. Effects of different concentrations of tetramethylpyrazine, an active constituent of Chinese herb, on human corneal epithelial cell damaged by hydrogen peroxide. Int J Ophthalmol 2014; 7:947-51. [PMID: 25540744 DOI: 10.3980/j.issn.2222-3959.2014.06.06] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 04/21/2014] [Indexed: 11/02/2022] Open
Abstract
AIM To discuss the effects of different concentrations of tetramethylpyrazine (TMP), an active constituent of Chinese herb, on damaged Shandong human corneal epithelial cell (SDHCEC) induced by hydrogen peroxide. METHODS We detected the combined effects of TMP with concentrations ranging from 4 mg/mL to 0.03 mg/mL and 800 µM hydrogen peroxide on SDHCEC. The methyl thiazolyl tetrazolium (MTT) assay was processed at 3, 6 and 12h separately while the detection of cell apoptosis at 6h only by flow cytometry. RESULTS The viability of SDHCEC with 0.5 mg/mL, 0.25 mg/mL, 0.125 mg/mL and 0.06 mg/mL TMP joint with 800 µM hydrogen peroxide at 3h and 6h was significantly higher than that with 800 µM hydrogen peroxide only, P<0.05. However, except 0.25 mg/mL, TMP with other concentrations joint with 800 µM hydrogen peroxide at 12h could not significantly inhibit decreased SDHCEC viability induced by 800 µM hydrogen peroxide. At 12h, TMP of 0.5 mg/mL, 0.25 mg/mL, 0.125 mg/mL and 0.06 mg/mL could significantly inhibit SDHCEC early apoptosis induced by 800 µM hydrogen peroxide, most remarkable at 0.25 mg/mL TMP, P<0.05. CONCLUSION Our results suggested that hydrogen peroxide can induce apoptosis related damage to SDHCEC. TMP can protect SDHCEC from the damage, and the protective effects may be associated with its anti-apoptosis mechanism.
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Affiliation(s)
- Na Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China ; Department of Ophthalmology, Huizhou First Hospital, Huizhou 516001, Guangdong Province, China
| | - Xin-Guo Deng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Shi-Hua Zhang
- Department of Ophthalmology, Huizhou First Hospital, Huizhou 516001, Guangdong Province, China
| | - Mei-Feng He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Dong-Qing Zhao
- Department of Ophthalmology, Huizhou First Hospital, Huizhou 516001, Guangdong Province, China
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Liang X, Zhou H, Ding Y, Li J, Yang C, Luo Y, Li S, Sun G, Liao X, Min W. TMP prevents retinal neovascularization and imparts neuroprotection in an oxygen-induced retinopathy model. Invest Ophthalmol Vis Sci 2012; 53:2157-69. [PMID: 22410554 DOI: 10.1167/iovs.11-9315] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
PURPOSE To evaluate the effects of tetramethylpyrazine (TMP) on retinal neovascularization (NV) and neuroprotection in an oxygen-induced retinopathy (OIR) model. METHODS Neonatal C57BL/6J mice were subjected to 75% oxygen from postnatal day 7 (P7) to P12 and then returned to room air. TMP (200 mg/kg) or normal saline was given daily from P12 to P17. Immunostaining, HE staining, TUNEL assay, and RT-PCR were used to assess the effects of TMP on retinal neurovascular repair. RESULTS TMP effectively prevented pathologic NV and accelerated physiologic revascularization by enhancing the formation of endothelial tip cells at the edges of the repairing capillary networks and preserving the astrocytic template in the avascular retina. TMP also prevented morphologic changes and significantly decreased TUNEL-positive cells in the avascular retina by rescuing neurons such as amacrine, rod bipolar, horizontal, and Müller cells. In TMP-treated mice retinas, there was a less obvious loss of amacrine cell bodies and their distinct bands; the number of both rod bipolar and horizontal cell bodies, as well as the density of their dendrites in the outer plexiform layer, was greater than that in OIR control mice. TMP not only decreased the loss of alignment of Müller cell bodies and distortion of processes but reduced the reactive expression of GFAP in Müller cells. Furthermore, HIF-1α and VEGF mRNA expression were downregulated in TMP-treated mice retinas. CONCLUSIONS TMP improved neurovascular recovery by preventing NV and protecting retinal astroglia cells and neurons from ischemia-induced cell death partially due to its downregulation of HIF-1α and VEGF mRNA expression.
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Affiliation(s)
- Xiaoling Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
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