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Hajimohammadi S, Rameshrad M, Karimi G. Exploring the therapeutic effects of sulforaphane: an in-depth review on endoplasmic reticulum stress modulation across different disease contexts. Inflammopharmacology 2024; 32:2185-2201. [PMID: 38922526 DOI: 10.1007/s10787-024-01506-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 06/06/2024] [Indexed: 06/27/2024]
Abstract
The endoplasmic reticulum (ER) is an intracellular organelle that contributes to the folding of proteins and calcium homeostasis. Numerous elements can disrupt its function, leading to the accumulation of proteins that are unfolded or misfolded in the lumen of the ER, a condition that is known as ER stress. This phenomenon can trigger cell death through the activation of apoptosis and inflammation. Glucoraphanin (GRA) is the predominant glucosinolate found in cruciferous vegetables. Various mechanical and biochemical processes activate the enzyme myrosinase, leading to the hydrolysis of glucoraphanin into the bioactive compound sulforaphane. Sulforaphane is an organosulfur compound that belongs to the isothiocyanate group. It possesses a wide range of activities and has shown remarkable potential as an anti-inflammatory, antioxidant, antitumor, and anti-angiogenic substance. Additionally, sulforaphane is resistant to oxidation, has been demonstrated to have low toxicity, and is considered well-tolerable in individuals. These properties make it a valuable natural dietary supplement for research purposes. Sulforaphane has been demonstrated as a potential candidate drug molecule for managing a range of diseases, primarily because of its potent antioxidant, anti-inflammatory, and anti-apoptotic properties, which can be mediated by modulation of ER stress pathways. This review seeks to cover a wealth of data supporting the broad range of protective functions of sulforaphane, improving various diseases, such as cardiovascular, central nervous system, liver, eye, and reproductive diseases, as well as diabetes, cancer, gastroenteritis, and osteoarthritis, through the amelioration of ER stress in both in vivo and in vitro studies.
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Affiliation(s)
- Samaneh Hajimohammadi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Mashhad University of Medical Science, Mashhad, Iran
| | - Maryam Rameshrad
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
- Pharmaceutical Research Center, Pharmaceutical Research Institute, Mashhad University of Medical Science, Mashhad, Iran.
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2
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Cohen H, Wani NA, Ben Hur D, Migliolo L, Cardoso MH, Porat Z, Shimoni E, Franco OL, Shai Y. Interaction of Pexiganan (MSI-78)-Derived Analogues Reduces Inflammation and TLR4-Mediated Cytokine Secretion: A Comparative Study. ACS OMEGA 2023; 8:17856-17868. [PMID: 37251186 PMCID: PMC10210221 DOI: 10.1021/acsomega.3c00850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023]
Abstract
Antibiotic-resistant bacterial infections have increased the prevalence of sepsis and septic shock mortality worldwide and have become a global concern. Antimicrobial peptides (AMPs) show remarkable properties for developing new antimicrobial agents and host response modulatory therapies. A new series of AMPs derived from pexiganan (MSI-78) were synthesized. The positively charged amino acids were segregated at their N- and C-termini, and the rest of the amino acids created a hydrophobic core surrounded by positive charges and were modified to simulate the lipopolysaccharide (LPS). The peptides were investigated for their antimicrobial activity and LPS-induced cytokine release inhibition profile. Various biochemical and biophysical methods were used, including attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, microscale thermophoresis (MST), and electron microscopy. Two new AMPs, MSI-Seg-F2F and MSI-N7K, preserved their neutralizing endotoxin activity while reducing toxicity and hemolytic activity. Combining all of these properties makes the designed peptides potential candidates to eradicate bacterial infection and detoxify LPS, which might be useful for sepsis treatment.
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Affiliation(s)
- Hadar Cohen
- Department
of Biomolecular Sciences, The Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Naiem Ahmad Wani
- Department
of Biomolecular Sciences, The Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Daniel Ben Hur
- Department
of Biomolecular Sciences, The Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Ludovico Migliolo
- Departamento
de Engenharia Sanitária e Ambiental, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
| | - Marlon H. Cardoso
- S-Inova,
Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117900, MS, Brazil
- Centro
de
Análises Proteômicas e Bioquímicas, Pós-Graduação
em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 70790160, DF, Brazil
- Instituto
de Biociências (INBIO), Universidade
Federal de Mato Grosso do Sul, Cidade Universitária, Campo Grande 79070900, Mato Grosso do Sul, Brazil
| | - Ziv Porat
- The
Department of Life Sciences Core Facilities, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Eyal Shimoni
- Department
of Chemical Research Support, The Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Octavio Luiz Franco
- Departamento
de Engenharia Sanitária e Ambiental, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
- S-Inova,
Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117900, MS, Brazil
- Centro
de
Análises Proteômicas e Bioquímicas, Pós-Graduação
em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 70790160, DF, Brazil
| | - Yechiel Shai
- Department
of Biomolecular Sciences, The Weizmann Institute
of Science, Rehovot 76100, Israel
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3
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Abstract
BACKGROUND Diabetic retinopathy is a common and specific microvascular complication of diabetes, which is also the leading cause of preventable blindness. Therefore, we aimed to find a promising therapeutic strategy for diabetic retinopathy. METHODS To investigate the role of toll-like receptor 4 (TLR4) in the diabetic retinopathy, we injected streptozotocin (STZ) into wild-type (wt) and TLR4 knock-out mice to induce diabetes. RESULTS While STZ induced diabetes both in wt and TLR4-/- mice, deletion of TLR4 in diabetic mice significantly improved diabetic retinopathy compared to diabetic wt mice, as judged by the enhanced thickness of retinal tissue. Furthermore, TLR4-dependent NF-κB pathway, inflammatory cytokine release and the expressions of vascular endothelial growth factor (VEGF) and glial fibrillary acidic protein (GFAP), which were all remarkably stimulated in STZ-injected wt mice, were inhibited in STZ-injected TLR4-/- mice. CONCLUSION TLR4 could serve as an independent target for treating diabetic retinopathy.
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Affiliation(s)
- Hongyu Fu
- Department of Endocrinology, Daqing Oilfield General Hospital, Daqing, China
| | - Huiqiang Liu
- Department of Endocrinology, Daqing Oilfield General Hospital, Daqing, China
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4
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Hughes FM, Odom MR, Cervantes A, Purves J. Inflammation triggered by the NLRP3 inflammasome is a critical driver of diabetic bladder dysfunction. Front Physiol 2022; 13:920487. [PMID: 36505062 PMCID: PMC9733912 DOI: 10.3389/fphys.2022.920487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 11/09/2022] [Indexed: 11/26/2022] Open
Abstract
Diabetes is a rapidly expanding epidemic projected to affect as many as 1 in 3 Americans by 2050. This disease is characterized by devastating complications brought about high glucose and metabolic derangement. The most common of these complications is diabetic bladder dysfunction (DBD) and estimates suggest that 50-80% of patients experience this disorder. Unfortunately, the Epidemiology of Diabetes Interventions and Complications Study suggests that strict glucose control does not decrease ones risk for incontinence, although it does decrease the risk of other complications such as retinopathy, nephropathy and neuropathy. Thus, there is a significant unmet need to better understand DBD in order to develop targeted therapies to alleviate patient suffering. Recently, the research community has come to understand that diabetes produces a systemic state of low-level inflammation known as meta-inflammation and attention has focused on a role for the sterile inflammation-inducing structure known as the NLRP3 inflammasome. In this review, we will examine the evidence that NLRP3 plays a central role in inducing DBD and driving its progression towards an underactive phenotype.
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Affiliation(s)
- Francis M. Hughes
- Division of Urology, Department of Surgery, Duke University Medical Center, Durham, NC, United States
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5
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Erdogan BR, Liu G, Arioglu-Inan E, Michel MC. Established and emerging treatments for diabetes-associated lower urinary tract dysfunction. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2022; 395:887-906. [PMID: 35545721 PMCID: PMC9276575 DOI: 10.1007/s00210-022-02249-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 12/16/2022]
Abstract
Dysfunction of the lower urinary tract (LUT) including urinary bladder and urethra (and prostate in men) is one of the most frequent complications of diabetes and can manifest as overactive bladder, underactive bladder, urinary incontinence, and as aggravated symptoms of benign prostate hyperplasia. We have performed a selective literature search to review existing evidence on efficacy of classic medications for the treatment of LUT dysfunction in diabetic patients and animals, i.e., α1-adrenoceptor and muscarinic receptor antagonists, β3-adrenoceptor agonists, and phosphodiesterase type 5 inhibitors. Generally, these agents appear to have comparable efficacy in patients and/or animals with and without diabetes. We also review effects of antidiabetic medications on LUT function. Such studies have largely been performed in animal models. In the streptozotocin-induced models of type 1 diabetes, insulin can prevent and reverse alterations of morphology, function, and gene expression patterns in bladder and prostate. Typical medications for the treatment of type 2 diabetes have been studied less often, and the reported findings are not yet sufficient to derive robust conclusions. Thereafter, we review animal studies with emerging medications perhaps targeting diabetes-associated LUT dysfunction. Data with myoinositol, daidzein, and with compounds that target oxidative stress, inflammation, Rac1, nerve growth factor, angiotensin II receptor, serotonin receptor, adenosine receptor, and soluble guanylyl cyclase are not conclusive yet, but some hold promise as potential treatments. Finally, we review nonpharmacological interventions in diabetic bladder dysfunction. These approaches are relatively new and give promising results in preclinical studies. In conclusion, the insulin data in rodent models of type 1 diabetes suggest that diabetes-associated LUT function can be mostly or partially reversed. However, we propose that considerable additional experimental and clinical studies are needed to target diabetes itself or pathophysiological changes induced by chronic hyperglycemia for the treatment of diabetic uropathy.
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Affiliation(s)
- Betül R Erdogan
- Department of Pharmacology, Faculty of Pharmacy, Izmir Katip Celebi University, Izmir, Turkey
| | - Guiming Liu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Ebru Arioglu-Inan
- Department of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Martin C Michel
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University, Mainz, Germany.
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6
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The Yin and Yang of toll-like receptors in endothelial dysfunction. Int Immunopharmacol 2022; 108:108768. [DOI: 10.1016/j.intimp.2022.108768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/01/2022] [Accepted: 04/07/2022] [Indexed: 11/24/2022]
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7
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Engin S, Barut EN, Yaşar YK, Soysal AÇ, Arıcı T, Kerimoğlu G, Kadıoğlu M, Sezen SF. Trimetazidine attenuates cyclophosphamide-induced cystitis by inhibiting TLR4-mediated NFκB signaling in mice. Life Sci 2022; 301:120590. [PMID: 35504331 DOI: 10.1016/j.lfs.2022.120590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 11/26/2022]
Abstract
AIM Cyclophosphamide (CP)-induced cystitis is a challenging clinical problem involving inflammation and dysfunction of bladder. Trimetazidine (TMZ) is an anti-anginal drug with anti-oxidant and anti-inflammatory properties. We aimed to investigate the protective effects of TMZ in CP-induced cystitis via inhibiting TLR4/NFκB signaling. MAIN METHODS Balb/c mice were administrated TMZ (10 or 20 mg/kg/day) intraperitoneally (i.p.) for 5 consecutive days before CP. On day 6, cystitis was induced by a single dose of CP (300 mg/kg, i.p.). Mesna (2-mercaptoethane sulfonate sodium; 30 mg/kg, i.p.) was administered 20 min before and at 4 and 8 h after the CP injection. After 24 h of cystitis induction, the bladders were removed for histopathological evaluation, contractility studies, biochemical analysis and western blotting. MTT assay was performed in a cancer cell line (MDA-MB-231) to evaluate the effect of TMZ on the cytotoxicity of CP. KEY FINDINGS CP-induced severe cystitis was confirmed by histological disturbances and the decrease in carbachol-evoked contractions of detrusor strips, which was partially improved by TMZ (20 mg/kg/day). SOD activity and GSH content were decreased whereas TNF-α and IL-1β levels were increased in the bladders of CP-treated mice, which were restored by TMZ or mesna. TMZ reduced the CP-induced increase in the protein expressions of caspase-3, TLR4 and phosphorylated-NFκB in bladder tissues. TMZ alone decreased the cell viability and TMZ also enhanced the cytotoxicity of CP. SIGNIFICANCE Our study provides the first preclinical evidence that TMZ attenuates CP-induced urotoxicity by enhancing anti-oxidant capacity and suppressing inflammation possibly via downregulating TLR4-mediated NFκB signaling while augmenting the cytotoxicity of CP.
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Affiliation(s)
- Seçkin Engin
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye.
| | - Elif Nur Barut
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye
| | - Yeşim Kaya Yaşar
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye; Drug and Pharmaceutical Technology Application and Research Center, Karadeniz Technical University, Trabzon, Turkiye
| | - Aysun Çelik Soysal
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Bülent Ecevit University, Zonguldak, Turkiye
| | - Tuğba Arıcı
- Başaksehir Cam and Sakura City Hospital, İstanbul, Turkiye
| | - Gökçen Kerimoğlu
- Department of Histology and Embryology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye
| | - Mine Kadıoğlu
- Department of Medical Pharmacology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkiye
| | - Sena F Sezen
- Department of Pharmacology, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkiye; Drug and Pharmaceutical Technology Application and Research Center, Karadeniz Technical University, Trabzon, Turkiye
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8
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Salama A, Asaad GF, Shaheen A. Chrysin ameliorates STZ-induced diabetes in rats: possible impact of modulation of TLR4/NF-κβ pathway. Res Pharm Sci 2021; 17:1-11. [PMID: 34909039 PMCID: PMC8621845 DOI: 10.4103/1735-5362.329921] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/19/2021] [Accepted: 11/01/2021] [Indexed: 12/14/2022] Open
Abstract
Background and purpose: Growing evidence advocates that upregulation of toll-like receptor 4 (TLR4) has been suggested as a causative influence in the development and complications of diabetes mellitus. We aimed to study the antidiabetic activity of chrysin against streptozotocin (STZ)-induced diabetes via down-regulation of TLR4/nuclear factor (NF-κβ)/heat shock protein 70 (HSP70) pathway as well as modulation of clusters of differentiation 4 (CD4+) in rats. Experimental approach: Fifty rats were divided into five groups (n = 10). Group I, normal rats received a single intraperitoneal injection of buffer citrate; group II, STZ-induced diabetic rats; groups III-V, diabetic rats received glimepiride (0.5 mg/kg; p.o.) or chrysin (40 and 80 mg/kg; p.o.) respectively, for 10 days. Serum samples were extracted to determine nitric oxide (NO), malondialdehyde (MDA), and reduced glutathione (GSH), insulin, CD4+, TLR4, and NF-κβ. Pancreatic tissue samples were extracted to determine glucose transporter 2 (GLUT2). Part of the pancreas was kept in formalin for pathological studies. Findings/Results: An elevation in blood glucose, NO, and MDA serum levels and a reduction of pancreatic GLUT2 content, insulin, and GSH serum levels were observed in diabetic rats. STZ injection, also, showed an increase in serum TLR4, NF-κβ, and HSP70 levels and a reduction in serum CD4+ levels with pancreatic cells necrosis. These biochemical and histological changes were reversed in glimepiride and chrysin groups. Conclusion and implications: The present study proved that chrysin has a potent anti-diabetic effect through the elevation of insulin and GLUT2 levels, the reduction of oxidative stress, and the inflammatory pathways TLR4/NF-κβ/HSP70 with the regulation of CD4+.
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Affiliation(s)
- Abeer Salama
- Department of Pharmacology, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622, Egypt
| | - Gihan F Asaad
- Department of Pharmacology, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622, Egypt
| | - Aya Shaheen
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Egypt
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Brunetti G, D'Amato G, De Santis S, Grano M, Faienza MF. Mechanisms of altered bone remodeling in children with type 1 diabetes. World J Diabetes 2021; 12:997-1009. [PMID: 34326950 PMCID: PMC8311475 DOI: 10.4239/wjd.v12.i7.997] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/17/2021] [Accepted: 05/22/2021] [Indexed: 02/06/2023] Open
Abstract
Bone loss associated with type 1 diabetes mellitus (T1DM) begins at the onset of the disease, already in childhood, determining a lower bone mass peak and hence a greater risk of osteoporosis and fractures later in life. The mechanisms underlying diabetic bone fragility are not yet completely understood. Hyperglycemia and insulin deficiency can affect the bone cells functions, as well as the bone marrow fat, thus impairing the bone strength, geometry, and microarchitecture. Several factors, like insulin and growth hormone/insulin-like growth factor 1, can control bone marrow mesenchymal stem cell commitment, and the receptor activator of nuclear factor-κB ligand/osteoprotegerin and Wnt-b catenin pathways can impair bone turnover. Some myokines may have a key role in regulating metabolic control and improving bone mass in T1DM subjects. The aim of this review is to provide an overview of the current knowledge of the mechanisms underlying altered bone remodeling in children affected by T1DM.
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Affiliation(s)
- Giacomina Brunetti
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University "A. Moro" of Bari, Bari 70125, Italy
| | - Gabriele D'Amato
- Department of Women’s and Children’s Health, ASL Bari, Neonatal Intensive Care Unit, Di Venere Hospital, Bari 70124, Italy
| | - Stefania De Santis
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro, Bari 70126, Italy
| | - Maria Grano
- Department of Emergency and Organ Transplantation, Univ Bari, Bari 70124, Italy
| | - Maria Felicia Faienza
- Department of Biomedical Sciences and Human Oncology, Pediatric Unit, University "A.Moro", Bari 70124, Italy
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Huang SJ, Lee SY, Teng YH, Lee SD, Cheng YJ. Photobiomodulation Therapy to Promote Angiogenesis in Diabetic Mice with Hindlimb Ischemia. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2021; 39:453-462. [PMID: 34264768 DOI: 10.1089/photob.2020.4896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Objective: To assess whether photobiomodulation therapy (PBMT) induces angiogenesis in diabetic mice with hindlimb ischemia (HLI). Background: Patients with diabetes mellitus (DM) are at high risk of developing peripheral arterial disease (PAD) in the lower extremities. PBMT has been shown to promote angiogenesis both in vitro and in vivo and could be a treatment for DM patients with PAD. Methods: Femoral artery ligation/excision in mice was performed to induce HLI as an animal model of PAD. PBMT at a dose of 660 nm and 1.91 J/cm2 was delivered for 10 min on 5 consecutive days after the HLI surgery. Control mice received HLI only. Mice in the DM group were injected with streptozocin to induce diabetes before HLI surgery. Mice in the laser and DM+ laser groups received both HLI and PBMT, and the latter group had induced DM. After the laser treatment, lower limb blood flow was evaluated by laser Doppler. The capillary density and CD31 were analyzed by immunofluorescence staining, and protein levels of vascular endothelial growth factor (VEGF)-A, hypoxia-inducible factor-1α (HIF-1α), inducible nitric oxide synthase (iNOS), endothelial nitric oxide synthase (eNOS), and extracellular signal-regulated kinases (ERK) were measured by Western blotting of tissue samples. Results: Compared with the control and DM mice, the laser and DM+ laser groups had more than double the capillary density and blood perfusion rate. Levels of CD31 and VEGF-A proteins in groups that received laser were increased by 1.9- to 3.2-fold compared with groups that did not undergo laser treatment. Animals treated with PBMT exhibited significantly increased HIF-1α expression and ERK phosphorylation compared with animals that did not receive this treatment, and the amount of phospho-eNOS and iNOS increased and decreased, respectively. Conclusions: PBMT can induce therapeutic angiogenesis, indicating that low intensity laser could be a novel treatment for PAD patients.
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Affiliation(s)
- Shi-Jie Huang
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Shin-Yi Lee
- General Education Center, China Medical University, Taichung, Taiwan
| | - Yi-Hsien Teng
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Shin-Da Lee
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Yu-Jung Cheng
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan.,Department of Rehabilitation, China Medical University Hospital, Taichung, Taiwan
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Tian J, Zhao Y, Wang L, Li L. Role of TLR4/MyD88/NF-κB signaling in heart and liver-related complications in a rat model of type 2 diabetes mellitus. J Int Med Res 2021; 49:300060521997590. [PMID: 33787393 PMCID: PMC8020098 DOI: 10.1177/0300060521997590] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Aims To analyze expression of members of the Toll-like receptor (TLR)4/myeloid
differentiation primary response 88 (MyD88)/nuclear factor (NF)-κB signaling
pathway in the heart and liver in a rat model of type 2 diabetes mellitus
(T2DM). Our overall goal was to understand the underlying pathophysiological
mechanisms. Methods We measured fasting blood glucose (FBG) and insulin (FINS) in a rat model of
T2DM. Expression of members of the TLR4/MyD88/NF-κB signaling pathway as
well as downstream cytokines was investigated. Levels of mRNA and protein
were assessed using quantitative real-time polymerase chain reaction and
western blotting, respectively. Protein content of tissue homogenates was
assessed using enzyme-linked immunosorbent assays. Results Diabetic rats had lower body weights, higher FBG, higher FINS, and higher
intraperitoneal glucose tolerance than normal rats. In addition, biochemical
indicators related to heart and liver function were elevated in diabetic
rats compared with normal rats. TLR4 and MyD88 were involved in the
occurrence of T2DM as well as T2DM-related heart and liver complications.
TLR4 caused T2DM-related heart and liver complications through activation of
NF-κB. Conclusions TLR4/MyD88/NF-κB signaling induces production of tumor necrosis factor-α,
interleukin-6, and monocyte chemoattractant protein-1, leading to the heart-
and liver-related complications of T2DM.
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Affiliation(s)
- Jiajia Tian
- Department of Endocrinology, Weifang Yidu Central Hospital, Weifang, P.R. China
| | - Yanyan Zhao
- Department of Endocrinology, Weifang Yidu Central Hospital, Weifang, P.R. China
| | - Lingling Wang
- Department of Endocrinology, Weifang Yidu Central Hospital, Weifang, P.R. China
| | - Lin Li
- The PLA Rocket Force Characteristic Medical Center, Beijing, P.R. China
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12
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Luo W, Chen X, Ye L, Chen X, Jia W, Zhao Y, Samorodov AV, Zhang Y, Hu X, Zhuang F, Qian J, Zheng C, Liang G, Wang Y. Kaempferol attenuates streptozotocin-induced diabetic nephropathy by downregulating TRAF6 expression: The role of TRAF6 in diabetic nephropathy. JOURNAL OF ETHNOPHARMACOLOGY 2021; 268:113553. [PMID: 33152432 DOI: 10.1016/j.jep.2020.113553] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 10/26/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kaempferia rhizome is a famous traditional herbal medical in tropical and subtropical areas. Kaempferol (KPF) is one of the main bioactive compounds in Kaempferia rhizome, with anti-oxidant/anti-inflammatory effects demonstrated in various disease models, including cancers, obesity and diabetes. AIM OF THE STUDY Inflammation plays an important role in the pathogenesis of diabetic nephropathy (DN). TRAF6 functions as a signal transducer in toll-like receptor 4 and NF-κB pro-inflammatory signaling pathway. We aimed at investigate whether KPF is able to mitigate inflammatory responses by regulating TRAF6 in DN. MATERIAL AND METHODS C57BL/6 mice were injected with streptozotocin to induce type 1 DN. NRK-52E, a tubular epithelial cell line, was used for in vitro analysis. TRAF6 was knockdown using siRNA in vitro and AAV2/2-shRNA in vivo. The anti-DN and inflammatory effects of KPF or knockdown of TRAF6 were evaluated by investigating renal filtration index, pathological changes of kidney tissue. Proinflammatory cytokine levels were detected using ELISA. NF-κB pathway and protein levels of related pathways were detected through Western blot. RESULTS KPF significantly reduced renal inflammation, fibrosis, and kidney dysfunction in diabetic mice. These effects were associated with a downregulation of TRAF6 in diabetic mouse kidneys, indicating the potential role of TRAF6. Knockdown of TRAF6 in mice through AAV2-shTRAF6 confirmed the importance of TRAF6 in DN. In vitro, treatment of KPF in NRK-52E cells attenuated high glucose (HG)-induced inflammatory and fibrogenic responses, associated with downregulated TRAF6 expression. The conclusion was further confirmed in NRK-52E cells by knocking down the expression and by overexpression of TRAF6. CONCLUSION Our findings provide direct evidence that TRAF6 mediates diabetes-induced inflammation leading to renal dysfunction. We also show that KPF is a potential therapeutic agent to reduce inflammatory responses in DN. Also, TRAF6 may represent an interesting target to combat DN.
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Affiliation(s)
- Wu Luo
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Xiaojun Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Laboratory of Pharmaceutical Analysis, Department of Pharmaceutics, Wenzhou Nursing School, Wenzhou, Zhejiang, 325000, China.
| | - Lin Ye
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Xuemei Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Wenjing Jia
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Yanni Zhao
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Aleksandr V Samorodov
- Department of Pharmacology, Bashkir State Medical University, Ufa City, 450005, Russia.
| | - Yali Zhang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Xueting Hu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Fei Zhuang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Department of Endocrinology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 323000, China.
| | - Jianchang Qian
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Zhuji Biomedicine Institute, School of Pharmaceutical Sciences, Wenzhou Medical University, Zhuji, Zhejiang, 311800, China.
| | - Chao Zheng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Department of Endocrinology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 323000, China.
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Zhuji Biomedicine Institute, School of Pharmaceutical Sciences, Wenzhou Medical University, Zhuji, Zhejiang, 311800, China.
| | - Yi Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Zhuji Biomedicine Institute, School of Pharmaceutical Sciences, Wenzhou Medical University, Zhuji, Zhejiang, 311800, China.
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13
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Cao Y, Han X, Wang Z, Liu Y, Wang Y, Zhang R, Ye J, Zou L, Dai W. TLR4 knockout ameliorates streptozotocin-induced osteoporosis in a mouse model of diabetes. Biochem Biophys Res Commun 2021; 546:185-191. [PMID: 33601314 DOI: 10.1016/j.bbrc.2021.01.102] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 01/28/2021] [Indexed: 12/28/2022]
Abstract
Type 1 diabetes mellitus (T1DM) is characterized by hyperglycemia manifesting as insufficient insulin. Toll-like receptor-4 (TLR4) has been implicated in diabetic osteoporosis. We established streptozotocin (STZ)-induced diabetic mouse model and examined the relevant osteoporosis factors in different experimental groups, the WT-CON group, WT-STZ group, KO-CON group and KO-STZ group, respectively. No obvious protection of TLR4 deletion was shown in mice with diabetes. There was no obvious difference in the body weight or blood glucose concentration between WT-STZ group and KO-STZ group. However, TLR4 deletion reduced the receptor activator of NF-κB ligand (RANKL)-induced osteoclast differentiation. Furthermore, TLR4 knockout attenuated STZ-induced diabetic osteoporosis via inhibiting osteoblasts and pre-inflammation factors mediated by the NF-κB pathway. TLR4 deletion ameliorated STZ-induced diabetic osteoporosis in mice, and TLR4 may be used as a potential therapeutic target for the treatment of diabetic osteoporosis.
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Affiliation(s)
- Yonghong Cao
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Xiaofang Han
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Zhenzhen Wang
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Yan Liu
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Yunsheng Wang
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Rong Zhang
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Jun Ye
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Lingling Zou
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China
| | - Wu Dai
- Department of Endocrinology, The Second People's Hospital of Hefei, Guangde Road, Hefei, 230011, Anhui, China.
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Wong SK, Chin KY, Ima-Nirwana S. Toll-like Receptor as a Molecular Link between Metabolic Syndrome and Inflammation: A Review. Curr Drug Targets 2020; 20:1264-1280. [PMID: 30961493 DOI: 10.2174/1389450120666190405172524] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 03/29/2019] [Accepted: 04/01/2019] [Indexed: 02/07/2023]
Abstract
Metabolic Syndrome (MetS) involves a cluster of five conditions, i.e. obesity, hyperglycaemia, hypertension, hypertriglyceridemia and low High-Density Lipoprotein (HDL) cholesterol. All components of MetS share an underlying chronic inflammatory aetiology, manifested by increased levels of pro-inflammatory cytokines. The pathogenic role of inflammation in the development of MetS suggested that toll-like receptor (TLR) activation may trigger MetS. This review summarises the supporting evidence on the interactions between MetS and TLR activation, bridged by the elevation of TLR ligands during MetS. The regulatory circuits mediated by TLR activation, which modulates signal propagation, leading to the state of chronic inflammation, are also discussed. Taken together, TLR activation could be the molecular basis in the development of MetS-induced inflammation.
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Affiliation(s)
- Sok Kuan Wong
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Kok-Yong Chin
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Soelaiman Ima-Nirwana
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur, Malaysia
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15
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Mossa AH, Galan A, Cammisotto PG, Velasquez Flores M, Shamout S, Barcelona P, Saragovi HU, Campeau L. Antagonism of proNGF or its receptor p75 NTR reverses remodelling and improves bladder function in a mouse model of diabetic voiding dysfunction. Diabetologia 2020; 63:1932-1946. [PMID: 32699962 DOI: 10.1007/s00125-020-05222-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/18/2020] [Indexed: 10/23/2022]
Abstract
AIMS/HYPOTHESIS Although 80% of diabetic patients will suffer from voiding difficulties and urinary symptoms, defined as diabetic voiding dysfunction (DVD), therapeutic targets and treatment options are limited. We hypothesise that the blockade of the pro-nerve growth factor (NGF)/p75 neurotrophin receptor (p75NTR) axis by an anti-proNGF monoclonal antibody or by a small molecule p75NTR antagonist (THX-B) can restore bladder remodelling (represented by bladder weight) in an animal model of DVD. Secondary outcomes of the study include improvements in bladder compliance, contractility and morphology, as well as in voiding behaviour, proNGF/NGF balance and TNF-α expression. METHODS In a streptozotocin-induced mouse model of diabetes, diabetic mice received either a blocking anti-proNGF monoclonal antibody or a p75NTR antagonist small molecule as weekly systemic injections for 4 weeks. Animals were tested at baseline (at 2 weeks of diabetes induction), and after 2 and 4 weeks of treatment. Outcomes measured were voiding function with voiding spot assays and cystometry. Bladders were assessed by histological, contractility and protein expression assays. RESULTS Diabetic mice showed features of DVD as early as 2 weeks after diabetes diagnosis (baseline) presented by hypertrophy, reduced contractility and abnormal cystometric parameters. Following treatment initiation, a twofold increase (p < 0.05) in untreated diabetic mouse bladder weight and thickness compared with non-diabetic controls was observed, and this change was reversed by p75NTR antagonism (37% reduction in bladder weight compared with untreated diabetic mice [95% CI 14%, 60%]) after 4 weeks of treatment. However, blocking proNGF did not help to reverse bladder hypertrophy. While diabetic mice had significantly worse cystometric parameters and contractile responses than non-diabetic controls, proNGF antagonism normalised bladder compliance (0.007 [Q1-Q3; 0.006-0.009] vs 0.015 [Q1-Q3; 0.014-0.029] ml/cmH2O in untreated diabetic mice, representing 62% reduction [95% CI 8%, 110%], p < 0.05) and contractility to KCl, carbachol and electrical field stimulation (p < 0.05 compared with the diabetic group) after 2 weeks of treatment. These effects were not observed after 4 weeks of treatment with proNGF antagonist. p75NTR antagonism did not show important improvements in cystometric parameters after 2 weeks of treatment. Slightly improved bladder compliance (0.01 [Q1-Q3; 0.009-0.012] vs 0.013 [Q1-Q3; 0.011-0.016] ml/cmH2O for untreated diabetic mice) was seen in the p75NTR antagonist-treated group after 4 weeks of treatment with significantly stabilised contractile responses to KCl, carbachol and electric field stimulation (p < 0.05 for each) compared with diabetic mice. Bladder dysfunction observed in diabetic mice was associated with a significant increase in bladder proNGF/NGF ratio (3.1 [±1.2] vs 0.26 [±0.04] ng/pg in control group, p < 0.05 at week 2 of treatment) and TNF-α (p < 0.05). The proNGF/NGF ratio was partially reduced (about 60% reduction) with both treatments (1.03 [±0.6] ng/pg for proNGF antibody-treated group and 1.4 [±0.76] ng/pg for p75NTR blocker-treated group after 2 weeks of treatment), concomitant with a significant decrease in the bladder levels of TNF-α (p < 0.05), despite persistent hyperglycaemia. CONCLUSIONS/INTERPRETATION Our findings indicate that blockade of proNGF and the p75NTR receptor in diabetes can impede the development and progression of DVD. The reported improvements in morphological and functional features in our DVD model validates the proNGF/p75NTR axis as a potential therapeutic target in this pathology. Graphical abstract.
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Affiliation(s)
- Abubakr H Mossa
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Alba Galan
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Philippe G Cammisotto
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Monica Velasquez Flores
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Samer Shamout
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
- Division of Urology, Department, of Surgery, McGill University, Montreal, QC, Canada
| | - Pablo Barcelona
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - H Uri Saragovi
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada
- Center for Experimental Therapeutics, Jewish General Hospital, Montreal, QC, Canada
- Department of Ophthalmology and Vision Sciences, McGill University, Montreal, QC, Canada
| | - Lysanne Campeau
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada.
- Division of Urology, Department, of Surgery, McGill University, Montreal, QC, Canada.
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Metabolic abnormalities exacerbate Sjögren's syndrome by and is associated with increased the population of interleukin-17-producing cells in NOD/ShiLtJ mice. J Transl Med 2020; 18:186. [PMID: 32370746 PMCID: PMC7201776 DOI: 10.1186/s12967-020-02343-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/11/2020] [Indexed: 12/20/2022] Open
Abstract
Background Sjögren’s syndrome (SS) is an autoimmune disease mediated by lymphocytic infiltration into exocrine glands, resulting in progressive lacrimal and salivary destruction and dysfunctional glandular secretion. Metabolic syndrome influences the immune system. To investigate its relationship with metabolic abnormalities, we evaluated the pathogenesis of SS and the immune cell populations in non-obese diabetic NOD/ShiLtJ mice with type 1 diabetes (T1D). Methods To induce metabolic abnormalities, streptozotocin (STZ)—a glucosamine–nitrosourea compound that destroys pancreatic β cells, resulting in T1D—was injected into NOD/ShiLtJ mice. The blood glucose level was measured to evaluate induction of T1D. The severity of SS was assessed by determining the body weight, salivary flow rate, and histologic parameters. The expression levels of proinflammatory factors in the salivary glands, lacrimal gland, and spleen were quantified by real–time PCR. The populations of various T– and B–cell subtypes in the peripheral blood, spleen, and salivary glands were assessed by flow cytometry. Results Induction of T1D in NOD/ShiLtJ mice increased both the severity of SS and the levels of proinflammatory cytokines in the salivary glands compared to the controls. Furthermore, the number of interleukin-17–producing immune cells in the peripheral blood, spleen, and salivary glands was increased in STZ- compared to vehicle-treated NOD/ShiLtJ mice. Conclusions Metabolic abnormalities play an important role in the development of SS.
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Zhu Z, Peng X, Li X, Tu T, Yang H, Teng S, Zhang W, Xing Z, Tang J, Hu X, Fang Z, Zhou S. HMGB1 impairs endothelium‐dependent relaxation in diabetes through TLR4/eNOS pathway. FASEB J 2020; 34:8641-8652. [PMID: 32359123 DOI: 10.1096/fj.202000242r] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/07/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Zhaowei Zhu
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Xiaofan Peng
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Xuping Li
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Tao Tu
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Hui Yang
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Shuai Teng
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Wei Zhang
- Department of Internal Medicine Wake Forest University School of Medicine NC USA
| | - Zhenhua Xing
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Jianjun Tang
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Xinqun Hu
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Zhenfei Fang
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
| | - Shenghua Zhou
- Cardiovascular Department The Second Xiangya Hospital Central South University Changsha China
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The Pharmacological Mechanism of Diabetes Mellitus-Associated Overactive Bladder and Its Treatment with Botulinum Toxin A. Toxins (Basel) 2020; 12:toxins12030186. [PMID: 32188046 PMCID: PMC7150832 DOI: 10.3390/toxins12030186] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 03/15/2020] [Indexed: 12/29/2022] Open
Abstract
Diabetes mellitus (DM) is an independent risk factor for overactive bladder (OAB). The pathophysiology of DM-associated OAB is multifactorial and time-dependent. Diabetic bladder dysfunction is highly associated with diabetic complications, mainly including diabetic neuropathy and atherosclerosis. Chronic systemic inflammation and bladder urothelial inflammation may contribute to the onset of OAB. Intravesical botulinum toxin A (BoNT-A) injection has proved to be a successful treatment for idiopathic and neurogenic OAB. BoNT-A can inhibit the efferent pathways of the bladder as well as the chronic inflammation and hypersensitivity via the afferent pathways. We conducted a review of the published literature in Pubmed using a combination of two keywords, namely “botulinum toxin A” (BoNT-A) and “overactive bladder”, with or without the additional keywords “detrusor overactivity”, “diabetes mellitus”, “inflammation”, and “urodynamic study”. We also reviewed the experience of our research teams, who have published several studies of the association between DM and OAB. Since limited data support the effectiveness and safety of BoNT-A for treating patients with DM-associated OAB, a comprehensive evaluation of diabetic complications and urodynamic study is needed before treatment. In the future, it is imperative to explore the clinical characteristics and inflammatory biomarkers of diabetes as determining predictors of the treatment efficacy.
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Karpova T, de Oliveira AA, Naas H, Priviero F, Nunes KP. Blockade of Toll-like receptor 4 (TLR4) reduces oxidative stress and restores phospho-ERK1/2 levels in Leydig cells exposed to high glucose. Life Sci 2020; 245:117365. [DOI: 10.1016/j.lfs.2020.117365] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/11/2020] [Accepted: 01/26/2020] [Indexed: 12/21/2022]
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20
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de Oliveira AA, Webb RC, Nunes KP. Toll-Like Receptor 4 and Heat-Shock Protein 70: Is it a New Target Pathway for Diabetic Vasculopathies? Curr Drug Targets 2020; 20:51-59. [PMID: 30129410 DOI: 10.2174/1389450119666180821105544] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/09/2018] [Accepted: 08/17/2018] [Indexed: 12/17/2022]
Abstract
Diabetes is one of the most concerning diseases in modern times. Despite considerable advances in therapeutic management, the prevalence of diabetes and its contribution to death and disability continue to be a major health problem. Diabetic vasculopathies are the leading cause of mortality and morbidity in diabetic patients. Its pathophysiology includes oxidative stress, advanced glycation end products, and a low-grade inflammatory state. Lately, actions of the innate immune system via Toll-like receptors (TLRs) have been suggested as a new insight in this field. TLRs are pattern recognition receptors activated by highly conserved structural motifs of exogenous or endogenous ligands. Heat-shock proteins (HSPs), normally known for their ability to protect cells during stressful conditions, when released from injured cells bind to TLR4 and trigger the release of pro-inflammatory cytokines in a MyD88-dependent pathway. This pathway had been investigated in pancreatic beta cells and skeletal muscle, but it has not yet been explored in the vascular system and deserves investigation. In this work, the interplay between TLR4 and HSP70 in the vasculature during diabetes is reviewed and discussed. The current literature and preliminary results from our laboratory led us to hypothesize that hyperglycemia-associated HSP70 plays an important role in the pathophysiology of diabetic vasculopathies via the TLR4 pathway and might be a new target for therapeutic intervention.
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Affiliation(s)
- Amanda Almeida de Oliveira
- Department of Biological Sciences, College of Sciences, Florida Institute of Technology, Melbourne, FL, United States
| | - R Clinton Webb
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Kenia Pedrosa Nunes
- Department of Biological Sciences, College of Sciences, Florida Institute of Technology, Melbourne, FL, United States
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21
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Ashrafi Jigheh Z, Ghorbani Haghjo A, Argani H, Sanajou D. Sodium-glucose co-transporters and diabetic nephropathy: Is there a link with toll-like receptors? Clin Exp Pharmacol Physiol 2020; 47:919-926. [PMID: 31968131 DOI: 10.1111/1440-1681.13261] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/08/2019] [Accepted: 01/16/2020] [Indexed: 12/25/2022]
Abstract
The incidence of diabetes mellitus (DM) has increased alarmingly over the last decades. Despite taking measures aimed at controlling hyperglycaemia and blood pressure, the rate of end-stage renal disease (ESRD) is continually growing. Upon increased amounts of advanced glycation end products (AGEs) and their correspondent receptors (RAGEs), AGE-RAGE axis is over-activated in DM, being the first step in the initiation and propagation of inflammatory cascades. Meanwhile, HMGB1, released from damaged cells in the diabetic kidneys, is the most notable ligand for the highly expressed toll-like receptors (TLRs) and RAGEs. TLRs play an indispensable role in the pathogenesis of diabetic nephropathy. Sodium-glucose co-transporter 2 (SGLT-2) inhibitors are hypoglycaemic agents acting on the renal proximal tubules to prevent glucose reabsorption and therefore increase urinary glucose excretion. Besides improving glycaemic control, these hypoglycaemic agents possess direct renoprotective properties. Here, therefore, we review the most recent findings regarding interrelationship between SGLT2 inhibitors and HMGB1-TLR4 axis.
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Affiliation(s)
- Zahra Ashrafi Jigheh
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Ghorbani Haghjo
- Biotechnology Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Argani
- Urology and Nephrology Research Centre, Beheshti University of Medical Sciences, Tehran, Iran
| | - Davoud Sanajou
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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22
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Garcia MM, Goicoechea C, Molina-Álvarez M, Pascual D. Toll-like receptor 4: A promising crossroads in the diagnosis and treatment of several pathologies. Eur J Pharmacol 2020; 874:172975. [PMID: 32017939 DOI: 10.1016/j.ejphar.2020.172975] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 12/20/2019] [Accepted: 01/29/2020] [Indexed: 12/26/2022]
Abstract
Toll-like receptor 4 (TLR4) is expressed in a wide variety of cells and is the central component of the mammalian innate immune system. Since its discovery in 1997, TLR4 has been assigned an ever-increasing number of functions that extend from pathogen recognition to tissue damage identification and promotion of the intrinsic "damage repair response" in pain, intestinal, respiratory and vascular disorders. Precisely, the finding of conserved sequence homology among species along with the molecular and functional characterisation of the TLR4 gene enabled researchers to envisage a common operating system in the activation of innate immunity and the initiation of plastic changes at the onset of chronic pain. Malfunctioning in other conditions was conceived in parallel. In this respect, "pivot" proteins and pathway redundancy are not just evolutionary leftovers but essential for normal functioning or cell survival. Indeed, at present, TLR4 single nucleotide polymorphisms (SNP) and their association with certain dysfunctions and diseases are being confirmed in different pools of patients. However, despite its ability to trigger pathogen infection or alternatively tissue injury communications to immune system, TLR4 targeting might not be considered a panacea. This review article represents a compilation of what we know about TLR4 from clinics and basic research on the 20th anniversary of its discovery. Understanding how to fine-tune the interaction between TLR4 and its specific ligands may lead in the next decades to the development of promising new treatments, reducing polypharmacy and probably having an impact on drug use in numerous pathologies.
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Affiliation(s)
- Miguel M Garcia
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Avda, Atenas S/n, 28922, Alcorcón, Spain
| | - Carlos Goicoechea
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Avda, Atenas S/n, 28922, Alcorcón, Spain
| | - Miguel Molina-Álvarez
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Avda, Atenas S/n, 28922, Alcorcón, Spain
| | - David Pascual
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Avda, Atenas S/n, 28922, Alcorcón, Spain.
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23
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Calmasini FB, McCarthy CG, Wenceslau CF, Priviero FBM, Antunes E, Webb RC. Toll-like receptor 9 regulates metabolic profile and contributes to obesity-induced benign prostatic hyperplasia in mice. Pharmacol Rep 2020; 72:179-187. [PMID: 32016843 DOI: 10.1007/s43440-019-00010-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 08/27/2019] [Accepted: 09/10/2019] [Indexed: 01/24/2023]
Abstract
BACKGROUND Benign prostatic hyperplasia (BPH) is associated with obesity and prostatic inflammation. The present study investigated the participation of toll-like receptor 9 (TLR9) in obesity-induced BPH, focusing on metabolic impairments, damage-associated molecular patterns (DAMP) levels and prostatic oxidative stress generation. METHODS C57BL/6 (WT) and TLR9 mutant male mice were fed with regular or high-fat diet for 12 weeks. Metabolic profile, functional protocols, reactive-oxygen species (ROS) generation, prostatic histological analysis and DAMP levels were analyzed. Western blotting for prostatic TLR9 signaling pathway was also performed. RESULTS BPH in WT obese animals was characterized by increased prostate weight, smooth muscle hypercontractility and prostatic epithelial hyperplasia. Higher epididymal fat weight and prostatic ROS generation along with increased fasting glucose, triglyceride and circulating DAMP levels were also observed in WT obese group. Conversely, TLR9 mutant obese animals exhibited lower epididymal fat weight, fasting glucose and triglyceride levels associated with reduced prostate hypercontractility, prostatic ROS and circulating DAMP levels. However, TLR9 mutant obese mice were not protected from obesity-associated prostatic overgrowth and epithelial hyperplasia. Interestingly, TLR9 mutant lean mice exhibited augmented fasting glucose and prostatic ROS levels compared with WT lean mice. Despite increased prostatic expression of TLR9 in WT obese mice, no differences were seen in MyD88 expression between groups. CONCLUSION Improved obesity-induced BPH-related prostatic smooth muscle hypercontractility in TLR9 obese mice may be associated with amelioration in the metabolic profile, ROS and DAMP generation. Therefore, TLR9 could be a valuable target to improve obesity-associated metabolic disorders and prostate smooth muscle hypercontractility in BPH.
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Affiliation(s)
- Fabiano B Calmasini
- Department of Physiology, Augusta University, 1120 15th Street, Augusta, GA, USA. .,Department of Pharmacology, Faculty of Medical Science, University of Campinas (UNICAMP), Campinas, Brazil.
| | - Cameron G McCarthy
- Department of Physiology, Augusta University, 1120 15th Street, Augusta, GA, USA.,Department of Physiology and Pharmacology, College of Medicine and Life Sciences, The University of Toledo, Toledo, USA
| | - Camilla F Wenceslau
- Department of Physiology, Augusta University, 1120 15th Street, Augusta, GA, USA.,Department of Physiology and Pharmacology, College of Medicine and Life Sciences, The University of Toledo, Toledo, USA
| | | | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Science, University of Campinas (UNICAMP), Campinas, Brazil
| | - R Clinton Webb
- Department of Physiology, Augusta University, 1120 15th Street, Augusta, GA, USA
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24
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Lin CF, Chueh TH, Chung CH, Chung SD, Chang TC, Chien CT. Sulforaphane improves voiding function via the preserving mitochondrial function in diabetic rats. J Formos Med Assoc 2019; 119:1422-1430. [PMID: 31837923 DOI: 10.1016/j.jfma.2019.11.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 11/03/2019] [Accepted: 11/20/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Hyperglycemia evoked oxidative stress contributing to diabetes (DM)-induced voiding dysfunction. We explored whether antioxidant sulforaphane,a NF-E2-related nuclear factor erythroid-2 (Nrf-2) activator, may ameliorate DM-induced bladder dysfunction. METHODS DM was induced by streptozotocin and sulforaphanewas administered before DM induction.Bladder reactive oxygen species (ROS) were determined by an ultrasensitive chemiluminescence analyzer. Mitochondrial function index mitochondrial Bax and cytosolic cytochrome c, antioxidant defense Nrf-2/HO-1, endoplasmic reticulum stress marker ATF-6/CHOP, and caspase 3/PARP were evaluated by Western blot. RESULTS DM increased Keap1 and reduced Nrf-2 expression, associated with increase of bladder ROS, mitochondrial Bax translocation, cytosolic cytochrome c release, ATF-6/CHOP, caspase-3/PARP in bladders which resulted in voiding dysfunction by increased intercontraction intervals and micturition duration. However, sulforaphanesignificantly increased nuclear Nrf-2/HO-1axis expression, decreased bladder ROS amount, mitochondrial Bax translocation, cytochrome c release, ATF-6/CHOP and caspase 3/PARP/apoptosis, thereby improved the voiding function by the shortened intercontraction intervals and micturition duration. CONCLUSION We suggest that sulforaphanevia activating Nrf-2/HO-1 signaling preserved mitochondrial function and suppressed DM-induced ROS, endoplasmic reticulum stress, apoptosis and voiding dysfunction.
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Affiliation(s)
- Chia-Fa Lin
- School of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Tsung-Hung Chueh
- School of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Cheng-Hsun Chung
- School of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Shue-Dong Chung
- Department of Urology, Far-East Memory Hospital, New Taipei City, 220, Taiwan
| | - Tzu-Ching Chang
- School of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan.
| | - Chiang-Ting Chien
- School of Life Science, National Taiwan Normal University, Taipei, 11677, Taiwan.
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Affiliation(s)
- Cameron G McCarthy
- From the Center for Hypertension and Personalized Medicine, Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, OH (C.G.M.)
| | - Styliani Goulopoulou
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth (S.G.)
| | - R Clinton Webb
- Department of Physiology, Augusta University, GA (R.C.W.)
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Overactive Bladder in Diabetes Mellitus. CURRENT BLADDER DYSFUNCTION REPORTS 2019. [DOI: 10.1007/s11884-019-00532-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Elrashidy RA, Kavran M, Asker ME, Mohamed HE, Daneshgari F, Liu G. Smooth muscle-specific deletion of MnSOD exacerbates diabetes-induced bladder dysfunction in mice. Am J Physiol Renal Physiol 2019; 317:F906-F912. [PMID: 31241994 PMCID: PMC6843036 DOI: 10.1152/ajprenal.00221.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/12/2019] [Accepted: 06/25/2019] [Indexed: 12/17/2022] Open
Abstract
Bladder dysfunction in diabetes progresses gradually over time. However, the mechanisms of the development are not clear. We tested the hypothesis that oxidative stress plays a key role in the development of diabetic bladder dysfunction using an inducible smooth muscle (SM)-specific superoxide dismutase 2 (Sod2) gene knockout (SM-Sod2 KO) mouse model. Eight-week-old male Sod2lox/lox, SM-CreERT2(ki)Cre/+ mice and wild-type mice were assigned to diabetic or control groups. 4-Hydroxytamoxifen was injected into Sod2lox/lox, SM-CreERT2(ki)Cre/+ mice to activate CreERT2-mediated deletion of Sod2. Diabetes was induced by injection of streptozotocin, whereas control mice were injected with vehicle. Nine weeks later, bladder function was evaluated, and bladders were harvested for immunoblot analysis. Wild-type diabetic mice presented compensated bladder function along with increased nitrotyrosine and MnSOD in detrusor muscle. Induction of diabetes in SM-Sod2 KO mice caused deteriorated bladder function and even greater increases in nitrotyrosine compared with wild-type diabetic mice. Expression levels of apoptosis regulator Bax and cleaved caspase-3 were increased, but apoptosis regulator Bcl-2 expression was decreased in detrusor muscle of both diabetic groups, with more pronounced effects in SM-Sod2 KO diabetic mice. Our findings demonstrate that exaggerated oxidative stress can accelerate the development of bladder dysfunction in diabetic mice and the enhanced activation of apoptotic pathways in the bladder may be involved in the process.
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Affiliation(s)
- Rania A Elrashidy
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio
- Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Michael Kavran
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio
| | - Mervat E Asker
- Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Hoda E Mohamed
- Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Firouz Daneshgari
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio
| | - Guiming Liu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio
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Yesilyurt ZE, Erdogan BR, Karaomerlioglu I, Muderrisoglu AE, Michel MC, Arioglu-Inan E. Urinary Bladder Weight and Function in a Rat Model of Mild Hyperglycemia and Its Treatment With Dapagliflozin. Front Pharmacol 2019; 10:911. [PMID: 31474866 PMCID: PMC6706456 DOI: 10.3389/fphar.2019.00911] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/18/2019] [Indexed: 11/13/2022] Open
Abstract
Hypertrophy and dysfunction of the urinary bladder are consistently observed in animal models of type 1 and less consistently in those of type 2 diabetes. We have tested the effects of mild hyperglycemia (n = 10 per group) in a randomized, blinded study and, in a blinded pilot study, of type 2 diabetes (n = 6 per group) and its treatment with dapagliflozin (1 mg/kg per day) on weight, contraction, and relaxation of the rat bladder. Based on a combination of high-fat diet and a low dose of streptozotocin, animals in the main study reached a mean peak blood glucose level of about 300 mg/dl, which declined to 205 mg/dl at study end. This was associated with a small, if any, increase in bladder weight. In a pooled analysis of all animals of the main and the pilot study, we detected a correlation of moderate strength between blood glucose and bladder weight (r2 = 0.2013; P = 0.0003 for Pearson correlation coefficient). Neither the main nor the pilot study found evidence for an altered contractility (responses to carbachol or KCl) or relaxation (responses to isoprenaline, fenoterol, CL 316,243, or forskolin). Treatment with dapagliflozin in the absence of hyperglycemia increased diuresis in the main study by 43% relative to control and increased bladder weight by 15% in the pooled groups of both studies (post hoc analysis). We conclude that mild hyperglycemia has no major effects on bladder hypertrophy or function.
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Affiliation(s)
| | - Betül Rabia Erdogan
- Department of Pharmacology, School of Pharmacy, Ankara University, Ankara, Turkey
| | - Irem Karaomerlioglu
- Department of Pharmacology, School of Pharmacy, Ankara University, Ankara, Turkey
| | | | | | - Ebru Arioglu-Inan
- Department of Pharmacology, School of Pharmacy, Ankara University, Ankara, Turkey
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Chen J, Zhao J, Cao Y, Zhang G, Chen Y, Zhong J, Huang W, Zeng J, Wu P. Relationship between alterations of urinary microbiota and cultured negative lower urinary tract symptoms in female type 2 diabetes patients. BMC Urol 2019; 19:78. [PMID: 31438919 PMCID: PMC6704724 DOI: 10.1186/s12894-019-0506-0] [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: 09/03/2018] [Accepted: 08/02/2019] [Indexed: 12/31/2022] Open
Abstract
Background Lower urinary tract symptoms (LUTS) is the most common complication of diabetes. However, the underlying pathogenesis of cultured negative LUTS (cn-LUTS) in diabetic patients has not been well understood. Numerous evidence indicates that urinary dysbiosis is related to urologic disorders. We aim to study alterations of the urinary microbiota of cn-LUTS in type 2 diabetes (T2D) patients. Methods Female T2D patients and controls were recruited and requested to finish the American Urological Association Symptom Index. Mid-stream urine was collected for culturing and extracting DNA. Microbial diversity and composition were analyzed by targeting to 16S rDNA. Linear discriminant analysis effect size (LEfSe) was carried out to identify significantly different bacteria. Results 32 female T2D patients and 26 controls were enrolled. No significant differences in alpha diversity were observed between patients and controls. However, statistically decreased richness (ACE index and Chao 1 index, 85.52(13.75, 204.84) vs. 129.82(63.89, 280.30) and 83.86(11.00, 210.77) vs. 125.19(62.00, 251.77), P = 0.005; Observed Species, 76(10, 175) vs. 98(54, 234), P = 0.011) and decreased species diversity (Shannon index, 1.37(0.04, 3.48) vs. 2.09(0.98, 3.43), P = 0.033; Simpson index, 0.46 (0.06, 0.99) vs. 0.23(0.07, 0.64), P = 0.029) were shown in moderate-to-severe LUTS group and high Hemoglobin A1c group, respectively. A significant difference of beta diversity was found between T2D patients and controls and T2D patients with different severity of cn-LUTS as well as the different level of Hemoglobin A1c. LEfSe revealed that 10 genera (e.g., Escherichia-Shigella and Klebsiella) were increased and 7 genera were decreasing in T2D patients, 3 genera (e.g., Escherichia-Shigella and Campylobacter) were increased and 16 genera (e.g., Prevotella) were reduced in moderate-to-severe LUTS group, 2 genera (Escherichia-Shigella and Lactobacillus) were over-represented and 10 genera (e.g., Prevotella) were under-represented in high Hemoglobin A1c group. Finally, Hemoglobin A1c was found positively correlated with the total score of the American Urological Association Symptom Index (r = 0.509, P = 0.003). Conclusions Urinary dysbiosis may be related to cn-LUTS in female T2D patients. A better understanding of urinary microbiota in the development and progression of cn-LUTS in female T2D patients was necessary. The severity of cn-LUTS was correlated to hyperglycemia and chronic hyperglycemia might induce or promote cn-LUTS by influencing urinary microbiota. Electronic supplementary material The online version of this article (10.1186/s12894-019-0506-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jiawei Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jie Zhao
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Ying Cao
- Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Guihao Zhang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yang Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jialei Zhong
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Weina Huang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jiarong Zeng
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Peng Wu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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Naas H, de Oliveira AA, Karpova T, Nunes KP. Toll-like receptor 4 (TLR4) as a possible pathological mechanism in hyperglycemia-associated testicular dysfunction. Med Hypotheses 2019; 127:116-119. [DOI: 10.1016/j.mehy.2019.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/12/2019] [Indexed: 12/20/2022]
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31
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Klee NS, Moreland RS, Kendig DM. Detrusor contractility to parasympathetic mediators is differentially altered in the compensated and decompensated states of diabetic bladder dysfunction. Am J Physiol Renal Physiol 2019; 317:F388-F398. [PMID: 31141399 DOI: 10.1152/ajprenal.00178.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Diabetic bladder dysfunction (DBD) affects up to 50% of all patients with diabetes, characterized by symptoms of both overactive and underactive bladder. Although most diabetic bladder dysfunction studies have been performed using models with type 1 diabetes, few have been performed in models of type 2 diabetes, which accounts for ~90% of all diabetic cases. In a type 2 rat model using a high-fat diet (HFD) and two low doses of streptozotocin (STZ), we examined voiding measurements and functional experiments in urothelium-denuded bladder strips to establish a timeline of disease progression. We hypothesized that overactive bladder symptoms (compensated state) would develop and progress into symptoms characterized by underactive bladder (decompensated state). Our results indicated that this model developed the compensated state at 1 wk after STZ and the decompensated state at 4 mo after STZ administration. Diabetic bladders were hypertrophied compared with control bladders. Increased volume per void and detrusor muscle contractility to exogenous addition of carbachol and ATP confirmed the development of the compensated state. This enhanced contractility to carbachol was not due to increased levels of M3 receptor expression. Decompensation was characterized by increased volume per void, number of voids, and contractility to ATP but not carbachol. Thus, progression from the compensated to decompensated state may involve decreased contractility to muscarinic stimulation. These data suggest that the compensated state of DBD progresses temporally into the decompensated state in the male HFD/STZ model of diabetes; therefore, this male HFD/STZ model can be used to study the progression of DBD.
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Affiliation(s)
- Nicole S Klee
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Robert S Moreland
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Derek M Kendig
- Department of Biology, Loyola University Maryland, Baltimore, Maryland
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Lee JH, Sarker MK, Choi H, Shin D, Kim D, Jun HS. Lysophosphatidic acid receptor 1 inhibitor, AM095, attenuates diabetic nephropathy in mice by downregulation of TLR4/NF-κB signaling and NADPH oxidase. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1332-1340. [PMID: 30763641 DOI: 10.1016/j.bbadis.2019.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/15/2019] [Accepted: 02/04/2019] [Indexed: 12/19/2022]
Abstract
Diabetic nephropathy (DN) is one of the major long-term complications of diabetes. Lysophosphatidic acid (LPA) signaling has been implicated in renal fibrosis. In our previous study, we found that the LPA receptor 1/3 (LPAR1/3) antagonist, ki16425, protected against DN in diabetic db/db mice. Here, we investigated the effects of a specific pharmacological inhibitor of LPA receptor 1 (LPA1), AM095, on DN in streptozotocin (STZ)-induced diabetic mice to exclude a possible contribution of LPAR3 inhibition. AM095 treatment significantly reduced albuminuria and the albumin to creatinine ratio and significantly decreased the glomerular volume and tuft area in the treated group compared with the STZ-vehicle group. In the kidney of STZ-induced diabetic mice, the expression of LPAR1 mRNA and protein was positively correlated with oxidative stress. AM095 treatment inhibited LPA-induced reactive oxygen species production and NADPH oxidase expression as well as LPA-induced toll like receptor 4 (TLR4) expression in mesangial cells and in the kidney of STZ-induced diabetic mice. In addition, AM095 treatment suppressed LPA-induced pro-inflammatory cytokines and fibrotic factors expression through downregulation of phosphorylated NFκBp65 and c-Jun N-terminal kinases (JNK) in vitro and in the kidney of STZ-induced diabetic mice. Pharmacological or siRNA inhibition of TLR4 and NADPH oxidase mimicked the effects of AM095 in vitro. In conclusion, AM095 is effective in preventing the pathogenesis of DN by inhibiting TLR4/NF-κB and the NADPH oxidase system, consequently inhibiting the inflammatory signaling cascade in renal tissue of diabetic mice, suggesting that LPAR1 antagonism might provide a potential therapeutic target for DN.
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Affiliation(s)
- Jong Han Lee
- College of Pharmacy, Gachon University, Incheon, Republic of Korea; Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Mithun Kumer Sarker
- College of Pharmacy, Gachon University, Incheon, Republic of Korea; Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Hojung Choi
- College of Pharmacy, Gachon University, Incheon, Republic of Korea; Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Dongyun Shin
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Donghee Kim
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Hee-Sook Jun
- College of Pharmacy, Gachon University, Incheon, Republic of Korea; Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea; Gachon University Gil Medical Center, Gachon Medical and Convergence Institute, Incheon, Republic of Korea.
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Klee NS, McCarthy CG, Lewis S, McKenzie JL, Vincent JE, Webb RC. Urothelial Senescence in the Pathophysiology of Diabetic Bladder Dysfunction-A Novel Hypothesis. Front Surg 2018; 5:72. [PMID: 30564582 PMCID: PMC6288180 DOI: 10.3389/fsurg.2018.00072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/12/2018] [Indexed: 12/11/2022] Open
Abstract
Diabetic bladder dysfunction (DBD) is a well-recognized and common symptom affecting up to 50% of all diabetic patients. DBD has a broad range of clinical presentations ranging from overactive to underactive bladder symptoms that develops in middle-aged to elderly patients with long standing and poorly controlled diabetes. Low efficacy of current therapeutics and lifestyle interventions combined with high national healthcare costs highlight the need for more research into bladder dysfunction pathophysiology and novel treatment options. Cellular senescence is an age-related physiologic process in which cells undergo irreversible growth arrest induced by replicative exhaustion and damaging insults. While controlled senescence negatively regulates cell proliferation and promotes tissue regeneration, uncontrolled senescence is known to result in tissue dysfunction through enhanced secretion of inflammatory factors. This review presents previous scientific findings and current hypotheses that characterize diabetic bladder dysfunction. Further, we propose the novel hypothesis that cellular senescence within the urothelial layer of the bladder contributes to the pro-inflammatory/pro-oxidant environment and symptoms of diabetic bladder dysfunction. Our results show increased cellular senescence in the urothelial layer of the bladder; however, whether this phenomenon is the cause or effect of DBD is unknown. The urothelial layer of the bladder is made up of transitional epithelia specialized to contract and expand with demand and plays an active role in transmission by modulating afferent activity. Transition from normal functioning urothelial cells to secretory senescence cells would not only disrupt the barrier function of this layer but may result in altered signaling and sensation of bladder fullness; dysfunction of this layer is known to result in symptoms of frequency and urgency. Future DBD therapeutics may benefit from targeting and preventing early transition of urothelial cells to senescent cells.
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Affiliation(s)
- Nicole S Klee
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Cameron G McCarthy
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH, United States
| | - Steven Lewis
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Jaine L McKenzie
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States.,Department of Surgery, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Julie E Vincent
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - R Clinton Webb
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
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Guo Y, Xiao Z, Wang Y, Yao W, Liao S, Yu B, Zhang J, Zhang Y, Zheng B, Ren B, Gong Q. Sodium Butyrate Ameliorates Streptozotocin-Induced Type 1 Diabetes in Mice by Inhibiting the HMGB1 Expression. Front Endocrinol (Lausanne) 2018; 9:630. [PMID: 30410469 PMCID: PMC6209660 DOI: 10.3389/fendo.2018.00630] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 10/04/2018] [Indexed: 12/16/2022] Open
Abstract
Type 1 diabetes (T1D) is an autoimmune disease characterized by the immune cell-mediated progressive destruction of pancreatic β-cells. High-mobility group box 1 protein (HMGB1) has been recognized as a potential immune mediator to enhance the development of T1D. So we speculated that HMGB1 inhibitors could have anti-diabetic effect. Sodium butyrate is a short fatty acid derivative possessing anti-inflammatory activity by inhibiting HMGB1. In the current study, we evaluated the effects of sodium butyrate in streptozotocin (STZ)-induced T1D mice model. Diabetes was induced by multiple low-dose injections of STZ (40 mg/kg/day for 5 consecutive days), and then sodium butyrate (500 mg/kg/day) was administered by intraperitoneal injection for 7 consecutive days after STZ treatment. Blood glucose, incidence of diabetes, body weight, pancreatic histopathology, the amounts of CD4+T cell subsets, IL-1β level in serum and pancreatic expressions levels of HMGB1, and NF-κB p65 protein were analyzed. The results showed that sodium butyrate treatment decreased blood glucose and serum IL-1β, improved the islet morphology and decreased inflammatory cell infiltration, restored the unbalanced Th1/Th2 ratio, and down-regulated Th17 to normal level. In addition, sodium butyrate treatment can inhibit the pancreatic HMGB1 and NF-κB p65 protein expression. Therefore, we proposed that sodium butyrate should ameliorate STZ-induced T1D by down-regulating NF-κB mediated inflammatory signal pathway through inhibiting HMGB1.
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Affiliation(s)
- Yu Guo
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Zheng Xiao
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Yanan Wang
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Weihua Yao
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Shun Liao
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Bo Yu
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Jianqiang Zhang
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Yanxiang Zhang
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Bing Zheng
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Boxu Ren
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Quan Gong
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
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Nunes KP, de Oliveira AA, Szasz T, Biancardi VC, Webb RC. Blockade of Toll-Like Receptor 4 Attenuates Erectile Dysfunction in Diabetic Rats. J Sex Med 2018; 15:1235-1245. [DOI: 10.1016/j.jsxm.2018.07.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 07/02/2018] [Accepted: 07/06/2018] [Indexed: 12/19/2022]
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Ellenbroek JH, Arioglu Inan E, Michel MC. A systematic review of urinary bladder hypertrophy in experimental diabetes: Part 2. Comparison of animal models and functional consequences. Neurourol Urodyn 2018; 37:2346-2360. [DOI: 10.1002/nau.23786] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/03/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Johanne H. Ellenbroek
- Department of Internal Medicine; Leiden University Medical Centre; Leiden The Netherlands
| | | | - Martin C. Michel
- Department of Pharmacology; Johannes Gutenberg University; Mainz Germany
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37
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Arioglu Inan E, Ellenbroek JH, Michel MC. A systematic review of urinary bladder hypertrophy in experimental diabetes: Part I. Streptozotocin‐induced rat models. Neurourol Urodyn 2018; 37:1212-1219. [DOI: 10.1002/nau.23490] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 12/24/2017] [Indexed: 12/18/2022]
Affiliation(s)
| | - Johanne H. Ellenbroek
- Department of Internal MedicineLeiden University Medical CentreLeidenThe Netherlands
| | - Martin C. Michel
- Department of PharmacologyJohannes Gutenberg UniversityMainzGermany
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Jiang N, Chen X. Protective effect of high mobility group box-1 silence on diabetic retinopathy: an in vivo study. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:8148-8160. [PMID: 31966667 PMCID: PMC6965373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 06/27/2017] [Indexed: 06/10/2023]
Abstract
PURPOSE To explore the effects of HMGB1 silence on cell apoptosis, inflammatory response and endothelial permeability barrier. METHODS Retinal tissues were isolated from 8 week-old SD rats and cells were cultured and identified. Effects of HMGB1 silence were detected by qRT-PCR and Western blot. Proliferation capability of cells was detected by MTT assay and LDH activity assays. Cell apoptosis was analyzed by flow cytometry, Hoechst staining and Caspase-3 activity assay. Furthermore, concentrations of VEGF, ICAM-1, VCAM-1, TNF-α and MCP-1 in the cell media were measured. RESULTS Results of our study showed that high concentration of glucose caused increased cell apoptosis and inflammatory response, and also influenced the endothelial permeability barrier. Whereas, these damaging effects of high concentration of glucose could be relieved by HMGB1 silence. CONCLUSION The present study indicates that HMGB silence is a promising therapeutic option for diabetic retinopathy, and also provides theoretical basis for further exploration of diabetic retinopathy treatment.
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Affiliation(s)
- Ning Jiang
- Department of Ophthalmology, Shengjing Hospital of China Medical University Shenyang, People's Republic of China
| | - Xiaolong Chen
- Department of Ophthalmology, Shengjing Hospital of China Medical University Shenyang, People's Republic of China
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Diabetic retinopathy and dysregulated innate immunity. Vision Res 2017; 139:39-46. [PMID: 28571700 DOI: 10.1016/j.visres.2017.04.013] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 02/07/2023]
Abstract
Diabetic retinopathy (DR) is the progressive degeneration of retinal blood vessels and neurons. Inflammation is known to play an important role in the pathogenesis of DR. During diabetes, metabolic disorder leads to the release of damage-associated molecular patterns (DAMPs) both in the retina and elsewhere in the body. The innate immune system provides the first line of defense against the DAMPs. In the early stages of DR when the blood retinal barrier (BRB) is intact, retinal microglia and the complement system are activated at low levels. This low-level of inflammation (para-inflammation) is believed to be essential to maintain homeostasis and restore functionality. However, prolonged stimulation by DAMPs in the diabetic eye leads to maladaptation of the innate immune system and dysregulated para-inflammation may contribute to DR development. In the advanced stages of DR where immune privilege is comprised, circulating immune cells and serum proteins may infiltrate the retina and participate in retinal chronic inflammation and retinal vascular and neuronal damage. This review discusses how the innate immune system is activated in diabetes and DR. The view also discusses why the protective immune response becomes detrimental in DR.
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