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Tasnim J, Hashim NM, Han HC. A comprehensive review on potential drug-drug interactions of proton pump inhibitors with antidiabetic drugs metformin and DPP-4 inhibitors. Cell Biochem Funct 2024; 42:e3967. [PMID: 38480622 DOI: 10.1002/cbf.3967] [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: 01/11/2024] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/22/2024]
Abstract
A drug interaction is a condition in which two or more drugs are taken at the same time. Type 2 diabetes mellitus is a significant contributor to polypharmacy. Proton pump inhibitors (PPIs) are often prescribed in combination with metformin or DPP-4 inhibitors (sitagliptin, saxagliptin, linagliptin, and alogliptin) or a combined dose of metformin and DPP-4 inhibitor to treat gastritis in diabetic patients. This review article mainly focused on evaluating the potential drug-drug interactions (DDIs) between PPIs (i.e. esomeprazole, lansoprazole, omeprazole, pantoprazole, and rabeprazole) with metformin and PPIs with DPP-4 inhibitors. The findings demonstrated the existence of pharmacokinetic and pharmacodynamic DDIs between the aforementioned PPIs with metformin and DPP-4 inhibitors, which could impact the biological activities (i.e., hypoglycemia) of these drugs. Moreover, this review suggested that esomeprazole could be the best drug in the PPI group to be prescribed simultaneously with metformin and DPP-4 inhibitors, as most of the antidiabetic drugs of this study did not show any interaction with esomeprazole. The findings of this study also revealed that both antidiabetic drugs and PPIs could have positive interactions as PPIs have the potential to lessen the gastrointestinal side effects of metformin and DPP-4 inhibitors. To achieve the greatest therapeutic impact with the fewest side effects, careful dose control of these drugs is required. So, more extensive research on both human and animal subjects are needed to ascertain the veracity of this hypothesis.
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Affiliation(s)
- Jarin Tasnim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Najihah Mohd Hashim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Malaya, Kuala Lumpur, Malaysia
- Centre for Natural Products Research and Drug Discovery, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Heh Choon Han
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Malaya, Kuala Lumpur, Malaysia
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Wang SC, Wang XY, Liu CT, Chou RH, Chen ZB, Huang PH, Lin SJ. The Dipeptidyl Peptidase-4 Inhibitor Linagliptin Ameliorates Endothelial Inflammation and Microvascular Thrombosis in a Sepsis Mouse Model. Int J Mol Sci 2022; 23:ijms23063065. [PMID: 35328486 PMCID: PMC8949150 DOI: 10.3390/ijms23063065] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/01/2022] [Accepted: 03/10/2022] [Indexed: 02/07/2023] Open
Abstract
The pathophysiology of sepsis involves inflammation and hypercoagulability, which lead to microvascular thrombosis and compromised organ perfusion. Dipeptidyl peptidase (DPP)-4 inhibitors, e.g., linagliptin, are commonly used anti-diabetic drugs known to exert anti-inflammatory effects. However, whether these drugs confer an anti-thrombotic effect that preserves organ perfusion in sepsis remains to be investigated. In the present study, human umbilical vein endothelial cells (HUVECs) were treated with linagliptin to examine its anti-inflammatory and anti-thrombotic effects under tumor necrosis factor (TNF)-α treatment. To validate findings from in vitro experiments and provide in vivo evidence for the identified mechanism, a mouse model of lipopolysaccharide (LPS)-induced systemic inflammatory response syndrome was used, and pulmonary microcirculatory thrombosis was measured. In TNF-α-treated HUVECs and LPS-injected mice, linagliptin suppressed expressions of interleukin-1β (IL-1β) and intercellular adhesion molecule 1 (ICAM-1) via a nuclear factor-κB (NF-κB)–dependent pathway. Linagliptin attenuated tissue factor expression via the Akt/endothelial nitric oxide synthase pathway. In LPS-injected mice, linagliptin pretreatment significantly reduced thrombosis in the pulmonary microcirculation. These anti-inflammatory and anti-thrombotic effects were independent of blood glucose level. Together the present results suggest that linagliptin exerts protective effects against endothelial inflammation and microvascular thrombosis in a mouse model of sepsis.
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Affiliation(s)
- Shen-Chih Wang
- Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (S.-C.W.); (R.-H.C.); (S.-J.L.)
- Department of Anesthesiology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
| | - Xiang-Yu Wang
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan;
| | - Chung-Te Liu
- Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei 116, Taiwan;
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Ruey-Hsing Chou
- Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (S.-C.W.); (R.-H.C.); (S.-J.L.)
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan;
- Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan
| | - Zhen Bouman Chen
- Department of Diabetes Complications and Metabolism, City of Hope, Duarte, CA 91010, USA
- Irell and Manella Graduate School of Biological Sciences, City of Hope, Duarte, CA 91010, USA
- Correspondence: (Z.B.C.); (P.-H.H.); Tel.: +626-256-4673 (Z.B.C.); +886-2-28757374 (P.-H.H.); Fax: +886-2-28757375 (P.-H.H.)
| | - Po-Hsun Huang
- Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (S.-C.W.); (R.-H.C.); (S.-J.L.)
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan;
- Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- Correspondence: (Z.B.C.); (P.-H.H.); Tel.: +626-256-4673 (Z.B.C.); +886-2-28757374 (P.-H.H.); Fax: +886-2-28757375 (P.-H.H.)
| | - Shing-Jong Lin
- Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (S.-C.W.); (R.-H.C.); (S.-J.L.)
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan;
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- Department of Medical Research, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- Division of Cardiology, Heart Center, Cheng-Hsin General Hospital, Taipei 11220, Taiwan
- Taipei Heart Institute, Taipei Medical University, Taipei 11031, Taiwan
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Hussien YA, Mansour DF, Nada SA, Abd El-Rahman SS, Abdelsalam RM, Attia AS, El-Tanbouly DM. Linagliptin attenuates thioacetamide-induced hepatic encephalopathy in rats: Modulation of C/EBP-β and CX3CL1/Fractalkine, neuro-inflammation, oxidative stress and behavioral defects. Life Sci 2022; 295:120378. [DOI: 10.1016/j.lfs.2022.120378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/26/2022] [Accepted: 02/01/2022] [Indexed: 12/12/2022]
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4
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Saito H, Nakamura Y, Inagaki M, Yamadera S, Misawa H, Sato N, Oguchi T, Inagaki T, Tsuji Y, Tsuji M, Ohsawa I, Gotoh H, Kiuchi Y. Linagliptin Inhibits Interleukin-6 Production Through Toll-Like Receptor 4 Complex and Lipopolysaccharide-Binding Protein Independent Pathway in vitro Model. J Inflamm Res 2021; 14:5681-5686. [PMID: 34754214 PMCID: PMC8572089 DOI: 10.2147/jir.s326382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 09/27/2021] [Indexed: 12/12/2022] Open
Abstract
Purpose Lipopolysaccharides (LPS) induce inflammation by binding to the Toll-like receptor (TLR) 4 complex, including LPS-binding protein (LBP). The anti-inflammatory effects of linagliptin in LPS-induced inflammation in the TLR4-independent pathway have not been examined before. We examined the anti-inflammatory effects of linagliptin in the TLR4- and the LBP-independent pathway. Methods U937 cells were cultured in the medium supplemented with 10% fetal bovine serum (FBS) and treated with 100 nM phorbol myristate acetate for 48 h. Cells were then left untreated or were treated with 10 μg/mL anti-TLR4 antibodies alone or in combination with linagliptin for 1 h in media supplemented with or without 10% FBS. The cells were divided into 5 groups: a) control cells (untreated) b) cells treated with LPS c) cells treated with 10 μg/mL anti-TLR4 antibodies d) cells treated with LPS and 10 μg/mL anti-TLR4 antibodies and e) cells treated with LPS, 10 μg/mL anti-TLR4 antibodies, and linagliptin. The LPS concentrations used were 50 pg/mL or 100 pg/mL for cells treated in the presence of 10% FBS and 100 pg/mL or 1 μg/mL for cells treated in the absence of FBS. Linagliptin concentrations of 1 nM, 10 nM, and 100 nM were used for treatment. The supernatants were analyzed for interleukin (IL)-6 production after 24 h of various treatments. Results LPS increased IL-6 production compared to the untreated control cells, and anti-TLR4 antibody suppressed LPS-induced increased IL-6 levels. Linagliptin suppressed LPS-induced IL-6 production in a concentration-dependent manner in the presence of FBS. However, only 100 nM linagliptin could suppress LPS-induced IL-6 production in the absence of FBS. Conclusion Concentration-dependent and -independent inflammatory suppression was observed following linagliptin treatment after LPS induction in an experimental model of TLR4 inhibition by anti-TLR4 antibodies. Our results showed that linagliptin may inhibit inflammation through multiple mechanisms centered around the TLR-4-mediated pathway.
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Affiliation(s)
- Hiroshi Saito
- JA Hiroshima Genneral Hospital, Hatsukaichi City, Hiroshima, Japan
| | - Yuya Nakamura
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan.,Saiyu Soka Hospital, Soka City, Saitama, Japan
| | - Masahiro Inagaki
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan.,Faculty of Arts and Sciences at Fujiyoshida, Showa University, Fujiyoshida City, Yamanashi, Japan
| | - Shiho Yamadera
- Department of Hospital Pharmaceutics, Showa University School of Pharmacy, Shinagawa-ku, Tokyo, Japan
| | - Hideo Misawa
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan.,Saiyu Soka Hospital, Soka City, Saitama, Japan
| | - Naoki Sato
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan.,Department of Research Center, Tanabe Pharmacy Inc., Chuo-ku, Tokyo, Japan
| | - Tatsunori Oguchi
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Takae Inagaki
- Graduate School of Nursing and Rehabilitation Science, Yokohama City, Kanagawa, Japan
| | - Yuya Tsuji
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Mayumi Tsuji
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Isao Ohsawa
- Saiyu Soka Hospital, Soka City, Saitama, Japan
| | | | - Yuji Kiuchi
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
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Kitaura H, Ogawa S, Ohori F, Noguchi T, Marahleh A, Nara Y, Pramusita A, Kinjo R, Ma J, Kanou K, Mizoguchi I. Effects of Incretin-Related Diabetes Drugs on Bone Formation and Bone Resorption. Int J Mol Sci 2021; 22:ijms22126578. [PMID: 34205264 PMCID: PMC8234693 DOI: 10.3390/ijms22126578] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 12/12/2022] Open
Abstract
Patients with type 2 diabetes have an increased risk of fracture compared to the general population. Glucose absorption is accelerated by incretin hormones, which induce insulin secretion from the pancreas. The level of the incretin hormone, glucagon-like peptide-1 (GLP-1), shows an immediate postprandial increase, and the circulating level of intact GLP-1 is reduced rapidly by dipeptidyl peptidase-4 (DPP-4)-mediated inactivation. Therefore, GLP-1 receptor agonists and DPP-4 inhibitors are effective in the treatment of type 2 diabetes. However, these incretin-related diabetic agents have been reported to affect bone metabolism, including bone formation and resorption. These agents enhance the expression of bone markers, and have been applied to improve bone quality and bone density. In addition, they have been reported to suppress chronic inflammation and reduce the levels of inflammatory cytokine expression. Previously, we reported that these incretin-related agents inhibited both the expression of inflammatory cytokines and inflammation-induced bone resorption. This review presents an overview of current knowledge regarding the effects of incretin-related diabetes drugs on osteoblast differentiation and bone formation as well as osteoclast differentiation and bone resorption. The mechanisms by which incretin-related diabetes drugs regulate bone formation and bone resorption are also discussed.
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Khalil R, Shata A, Abd El-Kader EM, Sharaf H, Abdo WS, Amin NA, Saber S. Vildagliptin, a DPP-4 inhibitor, attenuates carbon tetrachloride-induced liver fibrosis by targeting ERK1/2, p38α, and NF-κB signaling. Toxicol Appl Pharmacol 2020; 407:115246. [PMID: 32956689 DOI: 10.1016/j.taap.2020.115246] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 09/12/2020] [Accepted: 09/16/2020] [Indexed: 02/08/2023]
Abstract
Mitogen-activated protein kinases (MAPKs) and nuclear factor (NF)-ĸB signaling have been recognized for their causal connection with liver fibrosis. Hence, it is encouraging to discover drugs that can modify the interactions between these signaling cascades. It has been suggested that glucagon-like peptide-1 receptors (GLP-1Rs) might have a role in the observed hepatoprotection of dipeptidyl peptidase-4 inhibitors other than vildagliptin (VLD). Consequently, we aimed to elucidate the mechanisms underlying its potential antifibrotic activity in a CCl4-intoxicated mouse model. VLD increased the percentage of viable CCl4-intoxicated primary rat hepatocytes in vitro. It also attenuated hepatic fibrosis, improved liver function, and prolonged survival of CCl4-intoxicated mice in a dose-dependent manner. This hepatoprotection might be mediated mainly through interference with extracellular signal-regulated protein kinase 1/2 phosphorylation, the most downstream signal of the MAPK pathway. In addition, VLD hepatoprotective activity could be partially mediated through inhibition of p38α phosphorylation and phosphorylation-induced NF-ĸB activation. As a result, VLD downregulated profibrogenic mediators, such as tumor necrosis factor α, transforming growth factor β, tissue inhibitor of metalloproteinase 1 and platelet-derived growth factor BB. Consequently, decreased expression levels of fibrosis markers, such as hydroxyproline and α smooth muscle actin, were confirmed. VLD showed a strong trend toward increasing the antioxidant defense machinery of fibrotic tissue, and we confirmed that GLP-1Rs were not implicated in the observed hepatoprotection. Since VLD poses little risk of hypoglycemia and is a safe drug for patients with liver injury, it may be a hopeful candidate for adjuvant treatment of liver fibrosis in humans.
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Affiliation(s)
- Rania Khalil
- Department of Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
| | - Ahmed Shata
- Department of Clinical pharmacology, Faculty of Medicine, Mansoura University, Mansoura, Egypt; Department of Clinical Pharmacy, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
| | - Eman M Abd El-Kader
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
| | - Hossam Sharaf
- Department of Clinical Pharmacy, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
| | - Walied S Abdo
- Department of Pathology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Noha A Amin
- Department of Haematology, Theodor Bilharz Research Institute, Egypt
| | - Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt.
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Effect of a DPP-4 Inhibitor on Orthodontic Tooth Movement and Associated Root Resorption. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7189084. [PMID: 32923485 PMCID: PMC7453249 DOI: 10.1155/2020/7189084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/06/2020] [Indexed: 02/06/2023]
Abstract
Objectives Dipeptidyl peptidase-4 (DPP-4) inhibitors are used as a treatment for type 2 diabetes mellitus and have also recently been applied to enhance bone quality and density, and increase the expression of bone markers. This study aimed to investigate the effect of a DPP-4 inhibitor on orthodontic tooth movement (OTM) and related root resorption in a mouse model. Materials and Methods Mice were randomly divided into three groups: those undergoing OTM with the addition of a DPP-4 inhibitor (30 μg), those undergoing OTM and receiving phosphate-buffered saline (PBS), and those without force loading (control group). OTM was achieved by means of a nickel-titanium closed coil spring that moved the first molar in a mesial direction for 12 days. The distance of OTM was measured using silicone impression. Maxillae were removed for histological analysis or real-time PCR analysis. Results The distance of OTM and the number of osteoclasts were significantly decreased after administration of the DPP-4 inhibitor, which also significantly suppressed the number of odontoclasts and root resorption after OTM. Furthermore, the mRNA expression of tumour necrosis factor-α (TNF-α) and the receptor activator of nuclear factor kappa-B ligand (RANKL) were decreased in DPP-4 inhibitor-treated mice compared with those receiving PBS and control animals. Conclusion The DPP-4 inhibitor inhibited tooth movement and associated root resorption by blocking the formation of osteoclasts and odontoclasts, respectively. It also appeared to inhibit osteoclastogenesis and odontoclastogenesis by suppressing the expression of TNF-α and/or RANKL.
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Linagliptin protects human chondrogenic ATDC5 cells against advanced glycation end products (AGEs)-induced apoptosis via a mitochondria-dependent pathway. Chem Biol Interact 2019; 315:108901. [PMID: 31733186 DOI: 10.1016/j.cbi.2019.108901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/18/2019] [Accepted: 11/12/2019] [Indexed: 01/07/2023]
Abstract
Chondrocytes in joints are responsible for the formation and remodeling of articular cartilage. The accumulation of advanced glycation end products (AGEs) in cartilage is detrimental to the survival of chondrocytes. Linagliptin is one of the most commonly used anti-diabetes agents, and recent work indicates that it exerts an anti-inflammatory effect in different cell types. In this study, we showed that Linagliptin had a protective role in AGEs-induced chondrocyte injury. The presence of Linagliptin ameliorated AGEs-induced reactive oxygen species (ROS) induction and reduced cellular protein carboxyl content. Linagliptin mitigated AGEs-induced mitochondrial membrane potential (ΔΨm) reduction and NAPDH oxidase subunit NOX-4 induction, indicating that Linagliptin is a potent anti-ROS agent in chondrocytes. Additionally, Linagliptin inhibited AGEs-induced production of high mobility group box chromosomal protein 1 (HMGB-1), and the expression of matrix metalloproteases (MMPs)-2 and -9. Flow cytometry experimentation showed that Linagliptin inhibited AGEs-induced apoptotic subpopulation. Moreover, Linagliptin inhibited the AGEs-induced increased ratio of Bax to Bcl-2, translocation of cytochrome C from mitochondria to the cytoplasm, and release of cleaved caspase-3. Collectively, our data indicate that the anti-diabetes drug Linagliptin has a new role in rescuing chondrocyte from insult by AGEs, and may, therefore, have the potential to treat joint disorders.
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Sato N, Nakamura Y, Yamadera S, Inagaki M, Kenmotsu S, Saito H, Oguchi T, Tsuji M, Chokki H, Ohsawa I, Gotoh H, Iwai S, Kiuchi Y. Linagliptin Inhibits Lipopolysaccharide-Induced Inflammation Concentration-Dependently And -Independently. J Inflamm Res 2019; 12:285-291. [PMID: 31695471 PMCID: PMC6814358 DOI: 10.2147/jir.s221761] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/05/2019] [Indexed: 12/12/2022] Open
Abstract
Purpose Dipeptidyl peptidase-4 inhibitors, including linagliptin, prevent inflammation. However, the in vitro effects of linagliptin are unclear. Moreover, although linagliptin inhibits lipopolysaccharide (LPS)-induced inflammation, the anti-inflammatory effects of linagliptin in this context are not concentration-dependent. In the absence of LPS-binding protein (LBP), the pro-inflammatory effects of LPS involve pathways other than the Toll-like receptor (TLR) 4 pathway. Here, we aimed to determine the anti-inflammatory mechanisms of linagliptin in an experimental model in which LBP was added to the medium. Methods Human U937 monocytes were cultured at 1 × 106 cells/mL in Roswell Park Memorial Institute medium and differentiated into macrophages using phorbol myristate acetate. All processes were carried out in medium containing 10% fetal bovine serum (FBS). After 48 hrs of culture, we replaced the medium and pretreated the cells with 100, 250, 500, or 2500 nM linagliptin for 1 hr. We exchanged the medium again, and the cells were treated with 1 ng/mL LPS with or without 100, 250, 500, or 2500 nM linagliptin. Interleukin (IL)-6 and LBP in the supernatant, nuclear factor (NF)-κB/p65 in the nucleus, and reactive oxygen species (ROS) in the cells, as important markers of the mechanism of inflammation induction by LPS, were measured using enzyme-linked immunosorbent assay kits. Results Linagliptin significantly prevented LPS-stimulated IL-6 production and intranuclear NF-κB/p65 levels in a concentration-dependent manner. LPS-induced intracellular ROS levels were significantly decreased by linagliptin at all concentrations. LBP levels were markedly higher in FBS-containing medium than in medium without FBS. However, LBP levels did not change following administration of linagliptin and/or LPS. Conclusion Concentration-dependent and -independent inflammatory suppression was observed following linagliptin treatment in the context of LPS-induced pro-inflammatory responses. Thus, our findings suggested that linagliptin induced two different mechanisms to repress inflammation, i.e., TLR4-dependent and -independent mechanisms.
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Affiliation(s)
- Naoki Sato
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan.,Department of Research Center, Tanabe Pharmacy Inc., Tokyo, Japan
| | - Yuya Nakamura
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan.,Department of Nephrology, Saiyu Soka Hospital, Soka City, Saitama-ken, Japan
| | - Shiho Yamadera
- Department of Hospital Pharmaceutics, Showa University School of Pharmacy, Shinagawa-ku, Tokyo, Japan
| | - Masahiro Inagaki
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan.,Fuculty of Arts and Sciences at Fujiyoshida, Showa University, Fujiyoshida City, Yamanashi-ken, Japan
| | - Sachiyo Kenmotsu
- Fuculty of Arts and Sciences at Fujiyoshida, Showa University, Fujiyoshida City, Yamanashi-ken, Japan
| | - Hiroshi Saito
- Department of Hospital Pharmaceutics, Showa University School of Pharmacy, Shinagawa-ku, Tokyo, Japan.,Department of Healthcare and Regulatory Sciences, Showa University School of Pharmacy, Shinagawa-ku, Tokyo, Japan
| | - Tatsunori Oguchi
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Mayumi Tsuji
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Hirokazu Chokki
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Isao Ohsawa
- Department of Nephrology, Saiyu Soka Hospital, Soka City, Saitama-ken, Japan
| | - Hiromichi Gotoh
- Department of Nephrology, Saiyu Soka Hospital, Soka City, Saitama-ken, Japan
| | - Shinichi Iwai
- Department of Healthcare and Regulatory Sciences, Showa University School of Pharmacy, Shinagawa-ku, Tokyo, Japan
| | - Yuji Kiuchi
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
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10
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Neuroprotective Properties of Linagliptin: Focus on Biochemical Mechanisms in Cerebral Ischemia, Vascular Dysfunction and Certain Neurodegenerative Diseases. Int J Mol Sci 2019; 20:ijms20164052. [PMID: 31434198 PMCID: PMC6719127 DOI: 10.3390/ijms20164052] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/16/2019] [Accepted: 08/17/2019] [Indexed: 02/08/2023] Open
Abstract
Linagliptin is a representative of dipeptidyl peptidase 4 (DPP-4) inhibitors which are registered and used effectively in a treatment of diabetes mellitus type 2. They increase the levels of active forms of endogenous incretins such as GLP-1 and GIP by inhibiting their enzymatic decomposition. Scientific reports suggest beneficial effects of linagliptin administration via immunological and biochemical pathways involved in neuroprotective processes of CNS. Linagliptin’s administration leads to a decrease in the concentration of proinflammatory factors such as: TNF-α, IL-6 and increases the number of anti-inflammatory patrolling monocytes CX3CR1bright. Significant reduction in Aβ42 level has been associated with the use of linagliptin implying potential application in Alzheimer’s disease. Linagliptin improved vascular functions by increasing production of nitric oxide (NO) and limiting concentration of apolipoprotein B. Linagliptin-induced decrease in macrophages infiltration may provide improvement in atheromatous plaque stabilization. Premedication with linagliptin increases neuron’s survival after stroke and augments neuronal stem cells proliferation. It seems to be connected with SDF-1α/CXCR4 signaling pathway. Linagliptin prevented abnormal proliferation and migration of rat brain microvascular endothelial cells in a state of hypoperfusion via SIRT1/HIF-1α/VEGF pathway. The article presents a summary of the studies assessing neuroprotective properties of linagliptin with special emphasis on cerebral ischemia, vascular dysfunction and neurodegenerative diseases.
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11
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Li H, Zhang J, Lin L, Xu L. Vascular protection of DPP-4 inhibitors in retinal endothelial cells in in vitro culture. Int Immunopharmacol 2018; 66:162-168. [PMID: 30466028 DOI: 10.1016/j.intimp.2018.10.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/21/2018] [Accepted: 10/30/2018] [Indexed: 02/05/2023]
Abstract
People with diabetes are at high risk of developing diabetes-related eye disease, termed as diabetic retinopathy, due damage being caused to the blood vessels in the retina. An efficient medical treatment to reduce diabetic retinopathy can improve the quality of life for diabetes patients. In our study, we show that linagliptin, a commercially available DPP-4 inhibitor, plays a protective role in retinal vascular endothelial cells. The presence of linagliptin protects retinal endothelial cells against TNF-α-induced cytotoxicity and enhances their viability. Linagliptin treatment suppresses TNF-α-induced production of reactive oxygen species and improves mitochondrial membrane potential. Moreover, linagliptin suppresses TNF-α-induced production of pro-inflammatory and pro-adhesive vascular cytokines including IL-6, IL-8, ICAM-1, and VCAM-1. The presence of linagliptin in cell media can reduce the number of THP-1 cells that adhere to retina endothelial cells. Mechanistically, linagliptin potently suppresses TNF-α-induced accumulation of NF-κB nuclear protein p65 and activation of NF-κB promoter. Our data indicate that linagliptin is an anti-inflammatory diabetic agent, with the potential to be applied as a treatment for diabetic retinopathy.
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Affiliation(s)
- Heng Li
- Department of Ophthalmology, West China Hospital Sichuan University, China; Department of Ophthalmology, Suining Central Hospital of Sichuan Province, China
| | - Junjun Zhang
- Department of Ophthalmology, West China Hospital Sichuan University, China.
| | - Li Lin
- Department of Ophthalmology, Suining Central Hospital of Sichuan Province, China
| | - Lishuai Xu
- Department of Ophthalmology, Affiliated Hospital of the North Sichuan Medical College
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12
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Yamadera S, Nakamura Y, Inagaki M, Kenmotsu S, Nohara T, Sato N, Oguchi T, Tsuji M, Ohsawa I, Gotoh H, Goto Y, Yura A, Kiuchi Y, Iwai S. Linagliptin inhibits lipopolysaccharide-induced inflammation in human U937 monocytes. Inflamm Regen 2018; 38:13. [PMID: 30151063 PMCID: PMC6100723 DOI: 10.1186/s41232-018-0071-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 05/08/2018] [Indexed: 12/23/2022] Open
Abstract
Background Atherosclerosis and inflammation are more common in patients with diabetes than in patients without diabetes, and atherosclerosis progression contributes to inflammation. Therefore, anti-inflammatory therapy is important for the prognosis of patients with diabetes. Linagliptin is the only bile-excreted, anti-diabetic oral dipeptidyl peptidase-4 (DPP-4) inhibitor. Although the anti-inflammatory effects of DPP-4 inhibitors in vivo and in vitro have been reported, few in vitro studies have examined the effects of linagliptin using monocytes, which play a central role in arteriosclerosis-related inflammation. Herein, we assessed the anti-inflammatory effects of linagliptin in human U937 monocytes. Methods U937 cells at densities of 1 × 106 cells/mL were cultured in Roswell Park Memorial Institute medium supplied with 10% fetal bovine serum and treated with 100 nM phorbol myristate acetate for 48 h for differentiation into macrophages. The media were replaced, and the cells were pretreated with 1, 5, 10, 50, and 100 nM linagliptin for 1 h or were left untreated. The media were then replaced again, and the cells were treated with 1 μg/mL lipopolysaccharide (LPS) or 10 nM interleukin (IL)-1β only, in combination with 1, 5, 10, 50, and 100 nM linagliptin or were left untreated. The extracted media were used to measure IL-6 and tumor necrosis factor (TNF)-α levels using enzyme-linked immunosorbent assay kits. Results LPS alone significantly increased IL-6 and TNF-α production compared with the control treatment. The treatment of cells with linagliptin at all concentrations significantly inhibited the LPS-stimulated IL-6 and TNF-α production. Meanwhile, IL-1β alone significantly increased IL-6 production compared with the control treatment. No significant difference in IL-6 production was noted between the cells treated with IL-1β and simultaneous treatment with IL-1β and linagliptin. Conclusions Linagliptin inhibited LPS-induced inflammation in human monocytic U937 cells.
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Affiliation(s)
- Shiho Yamadera
- 1Department of Healthcare and Regulatory Sciences, Showa University School of Pharmacy, Shinagawa-ku, Tokyo Japan
| | - Yuya Nakamura
- 2Department of Pharmacology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo Japan.,Saiyu Soka Hospital, Soka City, Saitama-ken Japan
| | - Masahiro Inagaki
- 4Department of Chemistry, College of Arts and Sciences, Showa University, Fujiyoshida City, Yamanashi-ken Japan
| | - Sachiyo Kenmotsu
- 4Department of Chemistry, College of Arts and Sciences, Showa University, Fujiyoshida City, Yamanashi-ken Japan
| | - Tetsuhito Nohara
- 2Department of Pharmacology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo Japan
| | - Naoki Sato
- 2Department of Pharmacology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo Japan
| | - Tatsunori Oguchi
- 2Department of Pharmacology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo Japan
| | - Mayumi Tsuji
- 2Department of Pharmacology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo Japan
| | - Isao Ohsawa
- Saiyu Soka Hospital, Soka City, Saitama-ken Japan
| | | | | | - Akihiko Yura
- 5School of Medicine, Showa University Preventive Medicine center, Koto-ku, Tokyo Japan
| | - Yuji Kiuchi
- 2Department of Pharmacology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo Japan
| | - Shinichi Iwai
- 1Department of Healthcare and Regulatory Sciences, Showa University School of Pharmacy, Shinagawa-ku, Tokyo Japan
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13
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Linagliptin attenuates chronic post-ischemia pain: Possible anti-inflammatory and anti-oxidant mechanisms. Eur J Pharmacol 2018; 828:110-118. [DOI: 10.1016/j.ejphar.2018.03.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/27/2018] [Accepted: 03/28/2018] [Indexed: 02/08/2023]
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