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Chacar S, Abdi A, Almansoori K, Alshamsi J, Al Hageh C, Zalloua P, Khraibi AA, Holt SG, Nader M. Role of CaMKII in diabetes induced vascular injury and its interaction with anti-diabetes therapy. Rev Endocr Metab Disord 2024; 25:369-382. [PMID: 38064002 PMCID: PMC10943158 DOI: 10.1007/s11154-023-09855-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/16/2023] [Indexed: 03/16/2024]
Abstract
Diabetes mellitus is a metabolic disorder denoted by chronic hyperglycemia that drives maladaptive structural changes and functional damage to the vasculature. Attenuation of this pathological remodeling of blood vessels remains an unmet target owing to paucity of information on the metabolic signatures of this process. Ca2+/calmodulin-dependent kinase II (CaMKII) is expressed in the vasculature and is implicated in the control of blood vessels homeostasis. Recently, CaMKII has attracted a special attention in view of its chronic upregulated activity in diabetic tissues, yet its role in the diabetic vasculature remains under investigation.This review highlights the physiological and pathological actions of CaMKII in the diabetic vasculature, with focus on the control of the dialogue between endothelial (EC) and vascular smooth muscle cells (VSMC). Activation of CaMKII enhances EC and VSMC proliferation and migration, and increases the production of extracellular matrix which leads to maladaptive remodeling of vessels. This is manifested by activation of genes/proteins implicated in the control of the cell cycle, cytoskeleton organization, proliferation, migration, and inflammation. Endothelial dysfunction is paralleled by impaired nitric oxide signaling, which is also influenced by CaMKII signaling (activation/oxidation). The efficiency of CaMKII inhibitors is currently being tested in animal models, with a focus on the genetic pathways involved in the regulation of CaMKII expression (microRNAs and single nucleotide polymorphisms). Interestingly, studies highlight an interaction between the anti-diabetic drugs and CaMKII expression/activity which requires further investigation. Together, the studies reviewed herein may guide pharmacological approaches to improve health-related outcomes in patients with diabetes.
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Affiliation(s)
- Stephanie Chacar
- Department of Physiology and Immunology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
- Center for Biotechnology, Khalifa University of Science and Technology, 127788, Abu Dhabi, United Arab Emirates.
| | - Abdulhamid Abdi
- Department of Physiology and Immunology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Khalifa Almansoori
- Department of Physiology and Immunology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Jawaher Alshamsi
- Department of Physiology and Immunology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Cynthia Al Hageh
- Department of Molecular Biology and Genetics, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Pierre Zalloua
- Department of Molecular Biology and Genetics, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Center for Biotechnology, Khalifa University of Science and Technology, 127788, Abu Dhabi, United Arab Emirates
| | - Ali A Khraibi
- Department of Physiology and Immunology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Center for Biotechnology, Khalifa University of Science and Technology, 127788, Abu Dhabi, United Arab Emirates
| | - Stephen G Holt
- Department of Physiology and Immunology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- SEHA Kidney Care, SEHA, Abu Dhabi, UAE
| | - Moni Nader
- Department of Physiology and Immunology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
- Center for Biotechnology, Khalifa University of Science and Technology, 127788, Abu Dhabi, United Arab Emirates.
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Al Mamun A, Shao C, Geng P, Wang S, Xiao J. The Mechanism of Pyroptosis and Its Application Prospect in Diabetic Wound Healing. J Inflamm Res 2024; 17:1481-1501. [PMID: 38463193 PMCID: PMC10924950 DOI: 10.2147/jir.s448693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/13/2024] [Indexed: 03/12/2024] Open
Abstract
Pyroptosis defines a form of pro-inflammatory-dependent programmed cell death triggered by gasdermin proteins, which creates cytoplasmic pores and promotes the activation and accumulation of immune cells by releasing several pro-inflammatory mediators and immunogenic substances upon cell rupture. Pyroptosis comprises canonical (mediated by Caspase-1) and non-canonical (mediated by Caspase-4/5/11) molecular signaling pathways. Numerous studies have explored the contributory roles of inflammasome and pyroptosis in the progression of multiple pathological conditions such as tumors, nerve injury, inflammatory diseases and metabolic disorders. Accumulating evidence indicates that the activation of the NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome results in the activation of pyroptosis and inflammation. Current evidence suggests that pyroptosis-dependent cell death plays a progressive role in the development of diabetic complications including diabetic wound healing (DWH) and diabetic foot ulcers (DFUs). This review presents a brief overview of the molecular mechanisms underlying pyroptosis and addresses the current research on pyroptosis-dependent signaling pathways in the context of DWH. In this review, we also present some prospective therapeutic compounds/agents that can target pyroptotic signaling pathways, which may serve as new strategies for the effective treatment and management of diabetic wounds.
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Affiliation(s)
- Abdullah Al Mamun
- Central Laboratory of the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang, 323000, People's Republic of China
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Chuxiao Shao
- Central Laboratory of the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang, 323000, People's Republic of China
| | - Peiwu Geng
- Central Laboratory of the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang, 323000, People's Republic of China
| | - Shuanghu Wang
- Central Laboratory of the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang, 323000, People's Republic of China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Department of Wound Healing, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
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Guo X, Huang Z, Ge Q, Yang L, Liang D, Huang Y, Jiang Y, Pathak JL, Wang L, Ge L. Glipizide Alleviates Periodontitis Pathogenicity via Inhibition of Angiogenesis, Osteoclastogenesis and M1/M2 Macrophage Ratio in Periodontal Tissue. Inflammation 2023; 46:1917-1931. [PMID: 37289398 DOI: 10.1007/s10753-023-01850-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/11/2023] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
New consensus indicates type 2 diabetes mellitus (T2DM) and periodontitis as comorbidity and may share common pathways of disease progression. Sulfonylureas have been reported to improve the periodontal status in periodontitis patients. Glipizide, a sulfonylurea widely used in the treatment of T2DM, has also been reported to inhibit inflammation and angiogenesis. The effect of glipizide on the pathogenicity of periodontitis, however, has not been studied. We developed ligature-induced periodontitis in mice and treated them with different concentrations of glipizide and then analyzed the level of periodontal tissue inflammation, alveolar bone resorption, and osteoclast differentiation. Inflammatory cell infiltration and angiogenesis were analyzed using immunohistochemistry, RT-qPCR, and ELISA. Transwell assay and Western bolt analyzed macrophage migration and polarization. 16S rRNA sequencing analyzed the effect of glipizide on the oral microbial flora. mRNA sequencing of bone marrow-derived macrophages (BMMs) stimulated by P. gingivalis lipopolysaccharide (Pg-LPS) after treatment with glipizide was analyzed. Glipizide decreases alveolar bone resorption, periodontal tissue degradation, and the number of osteoclasts in periodontal tissue affected by periodontitis (PAPT). Glipizide-treated periodontitis mice showed reduced micro-vessel density and leukocyte/macrophage infiltration in PAPT. Glipizide significantly inhibited osteoclast differentiation in vitro experiments. Glipizide treatment did not affect the oral microbiome of periodontitis mice. mRNA sequencing and KEGG analysis showed that glipizide activated PI3K/AKT signaling in LPS-stimulated BMMs. Glipizide inhibited the LPS-induced migration of BMMs but promoted M2/M1 macrophage ratio in LPS-induced BMMs via activation of PI3K/AKT signaling. In conclusion, glipizide inhibits angiogenesis, macrophage inflammatory phenotype, and osteoclastogenesis to alleviate periodontitis pathogenicity suggesting its' possible application in the treatment of periodontitis and diabetes comorbidity.
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Affiliation(s)
- Xueqi Guo
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Zhijun Huang
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Qing Ge
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Luxi Yang
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Dongliang Liang
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Yinyin Huang
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Yiqin Jiang
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Janak Lal Pathak
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China
| | - Lijing Wang
- School of Life Sciences and Biopharmaceutics, Vascular Biology Research Institute, Guangdong Pharmaceutical University, Guangzhou, China
| | - Linhu Ge
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510182, Guangdong, China.
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Geng X, Liu K, Wang J, Su X, Shi Y, Zhao L. Preparation of Ultra-Small Copper Nanoparticles-Loaded Self-Healing Hydrogels with Antibacterial, Inflammation-Suppressing and Angiogenesis-Enhancing Properties for Promoting Diabetic Wound Healing. Int J Nanomedicine 2023; 18:3339-3358. [PMID: 37361387 PMCID: PMC10289105 DOI: 10.2147/ijn.s399933] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 05/08/2023] [Indexed: 06/28/2023] Open
Abstract
Background Bacterial invasion, protracted inflammation, and angiogenesis inhibition are hallmarks of chronic diabetic wounds, bringing about patient morbidity and rising healthcare costs. For such wounds, there are currently few efficient therapies available. Methods We reported the development of carboxymethyl chitosan (CMCS)-based self-healing hydrogel loaded with ultra-small copper nanoparticles (Cunps) for local treatment of diabetic wound healing. The structure of Cunps was identified by XRD, TEM, XPS and other methods, and the characterization of the synthesized Cunps-loaded self-healing carboxymethyl chitosan (CMCS)-protocatechualdehyde (PCA) hydrogel (Cunps@CMCS-PCA hydrogel) was further investigated. The therapeutic effect of Cunps@CMCS-PCA hydrogel in diabetic wound healing was explored in vitro and in vivo. Results The findings showed that a kind of ultra-small size copper nanoparticles with excellent biocompatibility was prepared. CMCS was chemically conjugated to PCA to form self-healing hydrogels via the formation of an amide bond followed by the loading of ultra-small copper nanoparticles. The obtained Cunps@CMCS-PCA hydrogel showed a typical three-dimensional interlinked network structure with self-healing ability and porosity. It exhibited good biocompatibility in diabetic wounds. Furthermore, Cunps@CMCS-PCA hydrogel group significantly prevented bacterial growth in the skin wound of diabetic rats as compared to model group and CMCS-PCA hydrogel-treated group. After 3 days, no visible bacterial proliferation was observed. It also increased angiogenesis through Cunps mediated activation of ATP7A to prevent induction of autophagy. Furthermore, Cunps@CMCS-PCA hydrogel mainly depended on PCA-induced inhibition on inflammation of macrophage via JAK2/STAT3 signaling pathway. As a result, compared with delayed wound healing process with lower wound healing rate valued at 68.6% within 7 days in the model group, Cunps@CMCS-PCA significantly accelerated wound healing recovery and increased wound healing rate to 86.5%, suggesting that Cunps@CMCS-PCA hydrogel effectively accelerated wound healing. Conclusion Cunps@CMCS-PCA hydrogel offered a new therapeutic approach for quickening diabetic wound healing.
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Affiliation(s)
- Xinrong Geng
- School of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People’s Republic of China
| | - Kang Liu
- School of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People’s Republic of China
| | - Jinlei Wang
- School of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People’s Republic of China
| | - Xiangchen Su
- School of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People’s Republic of China
| | - Yijie Shi
- School of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People’s Republic of China
| | - Liang Zhao
- School of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People’s Republic of China
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Hatami P, Balighi K, Asl HN, Goodarzi A, Aryanian Z. Isotretinoin and timing of procedural interventions: Clinical implications and practical points. J Cosmet Dermatol 2023. [PMID: 37326142 DOI: 10.1111/jocd.15874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 05/01/2023] [Accepted: 06/04/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND For decades, the notion that elective surgeries and cutaneous procedures should be postponed for 6-12 months in patients on, or recently administered with isotretinoin, has been widely accepted. However, some recent studies showed the need for a change in this regard. METHOD Here, we reviewed the existing data in this regard through searching on PubMed, Google Scholar, and Scopus. All of the relevant papers published in English, until October, 2022, which we could access to their full-texts, were included. RESULTS We found some recommendations made by plastic surgeons, dermatologists, ENT surgeons, ophthalmologists, orthopedic surgeons, and dentists regarding the correct timing of procedural interventions in patients on, or recently administered with isotretinoin and tried to summarize them to provide a practical guide for clinicians. CONCLUSION Physicians may discuss with patients regarding the known risk of abnormal wound healing in the setting of systemic isotretinoin treatment and suggest that, when possible, surgical procedures be postponed until the activity of the retinoids has time to subside. It is even more important regarding patients with darker skin phototypes to follow an even more strict guideline.
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Affiliation(s)
- Parvaneh Hatami
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamran Balighi
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Dermatology, School of Medicine Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamed Nicknam Asl
- Department of Dentistry, Rafsanjan University of Medical Sciences (RUMS), Rafsanjan, Iran
| | - Azadeh Goodarzi
- Department of Dermatology, Rasool Akram Medical Complex, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Zeinab Aryanian
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Dermatology, Babol University of Medical Sciences, Babol, Iran
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Kang JB, Shah MA, Park DJ, Koh PO. Retinoic acid regulates the ubiquitin-proteasome system in a middle cerebral artery occlusion animal model. Lab Anim Res 2022; 38:13. [PMID: 35562751 PMCID: PMC9102573 DOI: 10.1186/s42826-022-00123-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 05/03/2022] [Indexed: 11/10/2022] Open
Abstract
Background Retinoic acid is a major metabolite of vitamin A and exerts beneficial effects including anti-oxidant and anti-inflammatory activities in neurons. The ubiquitin–proteasome system is an important biological system that regulates cell survival. Ubiquitination regulates protein degradation and plays an important role in oxidative stress. Deubiquitinating enzymes cleave ubiquitin from proteins and control ubiquitination-induced degradation. We detected decreases in ubiquitin carboxy-terminal hydrolase L1, ubiquitin thioesterase OTUB1, and proteasome subunit alpha types 1 and 3 in cerebral ischemic damage. In this study, we investigated whether retinoic acid regulates the expression of deubiquitinating enzymes ubiquitin carboxy-terminal hydrolase L1, ubiquitin thioesterase OTUB1, and proteasome subunit alpha types 1 and 3 in cerebral ischemic injury. Right middle cerebral artery occlusion (MCAO) was performed to induce cerebral ischemic damage in male rats. Retinoic acid (5 mg/kg) or vehicle was intraperitoneally injected every day from 4 days before surgery. Neurological behavioral tests were performed 24 h after MCAO, and right cerebral cortical tissues were collected. Results MCAO damage caused neurological behavioral dysfunction, and retinoic acid alleviated these deficits. The identified proteins decreased in MCAO animals with vehicle, while retinoic acid treatment attenuated these decreases. The results of proteomic study were confirmed by a reverse transcription-PCR technique. Expressions of ubiquitin carboxy-terminal hydrolase L1, ubiquitin thioesterase OTUB1, and proteasome subunit alpha types 1 and 3 were decreased in MCAO animals treated with vehicle. Retinoic acid treatment alleviated these MCAO-induced reductions. The ubiquitin–proteasome system plays an essential role in maintaining cell function and preserving cell shape against ischemic damage. Conclusions These findings suggest that retinoic acid regulates ubiquitin- and proteasome-related proteins including ubiquitin carboxy-terminal hydrolase L1, ubiquitin thioesterase OTUB1, and proteasome subunit alpha types 1 and 3 in a brain ischemia model. Changes in these proteins are involved in the neuroprotective effects of retinoic acid.
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Affiliation(s)
- Ju-Bin Kang
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, South Korea
| | - Murad-Ali Shah
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, South Korea
| | - Dong-Ju Park
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, South Korea
| | - Phil-Ok Koh
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, South Korea.
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Adipose-Derived Stem Cell-Incubated HA-Rich Sponge Matrix Implant Modulates Oxidative Stress to Enhance VEGF and TGF-β Secretions for Extracellular Matrix Reconstruction In Vivo. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9355692. [PMID: 35082971 PMCID: PMC8786469 DOI: 10.1155/2022/9355692] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 11/20/2021] [Indexed: 12/11/2022]
Abstract
This study demonstrated both adipose-derived stem cells (ASCs) in vitro and in vivo combined with three-dimensional (3D) porous sponge matrices on implant wound healing. Sponge matrices were created from hyaluronic acid (HA), collagen (Col), and gelatin (Gel), constructing two types: HA-L (low content) and HA-H (high content), to be cross-linked with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC). Fourier transform infrared spectroscopy method verified carboxyl groups of HA and amino groups of Col and Gel reacting between the raw materials and scaffolds to identify the successive cross-linking. The swelling ratios of two types of sponge matrices were analyzed by water absorption capabilities, and the results displayed both over 30-fold dry scaffold weight enhancements. In biodegradation tests, matrices were hydrolyzed over time by three cutaneous enzymes, hyaluronidase, lysozyme, and collagenase I. ASCs from rats were cultured within the HA-H scaffold, demonstrating higher antioxidative abilities and secretions on related genes and proteins compared to the other two groups. The ASC HA-H matrix promoted cell proliferation to stimulate capillary angiogenesis inducer secretions, including vascular endothelial growth factor (VEGF) and transforming growth factor-β (TGF-β). In vivo histological examinations showed ASCs from implanted HA-H implant transported into the subcutis, and rat skin cells also infiltrated into the original matrix zone to increase the extracellular matrix (ECM) reconstructions. Our experimental data revealed that the ASC HA-H sponge implant was effective in improving wound repair.
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Yang L, Ge Q, Ye Z, Wang L, Wang L, Mashrah MA, Pathak JL. Sulfonylureas for Treatment of Periodontitis-Diabetes Comorbidity-Related Complications: Killing Two Birds With One Stone. Front Pharmacol 2021; 12:728458. [PMID: 34539410 PMCID: PMC8440798 DOI: 10.3389/fphar.2021.728458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/19/2021] [Indexed: 12/28/2022] Open
Abstract
Periodontitis is one of the most prevalent oral inflammatory diseases leading to teeth loss and oral health problems in adults. Periodontitis mainly affects periodontal tissue by affecting the host immune system and bone homeostasis. Moreover, periodontitis is associated with various systemic diseases. Diabetes is a metabolic disease with systemic effects. Both periodontitis and diabetes are common inflammatory diseases, and comorbidity of two diseases is linked to exacerbation of the pathophysiology of both diseases. Since bacterial dysbiosis is mainly responsible for periodontitis, antibiotics are widely used drugs to treat periodontitis in clinics. However, the outcomes of antibiotic treatments in periodontitis are not satisfactory. Therefore, the application of anti-inflammatory drugs in combination with antibiotics could be a treatment option for periodontitis-diabetes comorbidity. Anti-diabetic drugs usually have anti-inflammatory properties and have shown beneficial effects on periodontitis. Sulfonylureas, insulin secretagogues, are the earliest and most widely used oral hypoglycemic drugs used for type-2 diabetes. Studies have found that sulfonylurea drugs can play a certain role in the mitigation of periodontitis and inflammation. This article reviews the effects of sulfonylurea drugs on the mitigation of periodontitis-diabetes comorbidity-related inflammation, bone loss, and vascular growth as well as the involved molecular mechanisms. We discuss the possibility of a new application of sulfonylureas (old drug) to treat periodontitis-diabetes comorbidity.
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Affiliation(s)
- Luxi Yang
- Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qing Ge
- Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhitong Ye
- Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Lijing Wang
- Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China.,School of Life Sciences and Biopharmaceutics, Vascular Biology Research Institute, Guangdong Pharmaceutical University, Guangzhou, China
| | - Liping Wang
- Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Mubarak Ahmed Mashrah
- Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Janak L Pathak
- Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
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Youssef JR, Boraie NA, Ibrahim HF, Ismail FA, El-Moslemany RM. Glibenclamide Nanocrystal-Loaded Bioactive Polymeric Scaffolds for Skin Regeneration: In Vitro Characterization and Preclinical Evaluation. Pharmaceutics 2021; 13:1469. [PMID: 34575545 PMCID: PMC8469322 DOI: 10.3390/pharmaceutics13091469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/02/2021] [Accepted: 09/09/2021] [Indexed: 01/02/2023] Open
Abstract
Skin restoration following full-thickness injury poses significant clinical challenges including inflammation and scarring. Medicated scaffolds formulated from natural bioactive polymers present an attractive platform for promoting wound healing. Glibenclamide was formulated in collagen/chitosan composite scaffolds to fulfill this aim. Glibenclamide was forged into nanocrystals with optimized colloidal properties (particle size of 352.2 nm, and polydispersity index of 0.29) using Kolliphor as a stabilizer to allow loading into the hydrophilic polymeric matrix. Scaffolds were prepared by the freeze drying method using different total polymer contents (3-6%) and collagen/chitosan ratios (0.25-2). A total polymer content of 3% at a collagen/chitosan ratio of 2:1 (SCGL3-2) was selected based on the results of in vitro characterization including the swelling index (1095.21), porosity (94.08%), mechanical strength, rate of degradation and in vitro drug release. SCGL3-2 was shown to be hemocompatible based on the results of protein binding, blood clotting and percentage hemolysis assays. In vitro cell culture studies on HSF cells demonstrated the biocompatibility of nanocrystals and SCGL3-2. In vivo studies on a rat model of a full-thickness wound presented rapid closure with enhanced histological and immunohistochemical parameters, revealing the success of the scaffold in reducing inflammation and promoting wound healing without scar formation. Hence, SCGL3-2 could be considered a potential dermal substitute for skin regeneration.
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Affiliation(s)
- Julie R. Youssef
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
| | - Nabila A. Boraie
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
| | - Heba F. Ibrahim
- Department of Histology and Cell Biology, Faculty of Medicine, Alexandria University, Alexandria 21523, Egypt;
| | - Fatma A. Ismail
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
| | - Riham M. El-Moslemany
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
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McElwain CJ, McCarthy FP, McCarthy CM. Gestational Diabetes Mellitus and Maternal Immune Dysregulation: What We Know So Far. Int J Mol Sci 2021; 22:4261. [PMID: 33923959 PMCID: PMC8073796 DOI: 10.3390/ijms22084261] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/06/2021] [Accepted: 04/14/2021] [Indexed: 02/07/2023] Open
Abstract
Gestational diabetes mellitus (GDM) is an obstetric complication that affects approximately 5-10% of all pregnancies worldwide. GDM is defined as any degree of glucose intolerance with onset or first recognition during pregnancy, and is characterized by exaggerated insulin resistance, a condition which is already pronounced in healthy pregnancies. Maternal hyperglycaemia ensues, instigating a 'glucose stress' response and concurrent systemic inflammation. Previous findings have proposed that both placental and visceral adipose tissue play a part in instigating and mediating this low-grade inflammatory response which involves altered infiltration, differentiation and activation of maternal innate and adaptive immune cells. The resulting maternal immune dysregulation is responsible for exacerbation of the condition and a further reduction in maternal insulin sensitivity. GDM pathology results in maternal and foetal adverse outcomes such as increased susceptibility to diabetes mellitus development and foetal neurological conditions. A clearer understanding of how these pathways originate and evolve will improve therapeutic targeting. In this review, we will explore the existing findings describing maternal immunological adaption in GDM in an attempt to highlight our current understanding of GDM-mediated immune dysregulation and identify areas where further research is required.
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Affiliation(s)
- Colm J. McElwain
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, T12 XF62 Cork, Ireland;
| | - Fergus P. McCarthy
- Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, T12 YE02 Cork, Ireland;
| | - Cathal M. McCarthy
- Department of Pharmacology and Therapeutics, Western Gateway Building, University College Cork, T12 XF62 Cork, Ireland;
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Yang M, Li R, Wang X, Liu X, Zhang B, Wang Y. Preparation, characterization and wound healing effect of alginate/chitosan microcapsules loaded with polysaccharides from Nostoc Commune Vaucher. Biomed Mater 2021; 16:025015. [PMID: 33605229 DOI: 10.1088/1748-605x/abd051] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Biologically active coating materials could promote the growth of granulation tissue as auxiliary materials, while natural polysaccharides could promote vascular regeneration and wound healing. Therefore, in this study, ultrasound-assisted extract of Nostoc commune Vaucher polysaccharides (UAP) yield after the process optimization was 12.89 ± 0.24%, which was used to prepare microcapsules by emulsification and cross-linking. The effect of alginate/chitosan-UAP composite materials on wound healing in an experimental rat model for 14 d and its physical properties were evaluated. In vitro experiments indicated that the UAP microcapsule material had a porous and loose three-dimensional network structure, and had good biocompatibility and swelling properties as a wound healing material. Animal experiments indicated that UAP microcapsules could extremely significantly promote wound healing (P < 0.01), and wound closure rate reached 79.16 ± 3.91% on 14th day. Meanwhile UAP microcapsules might promote angiogenesis and granulation growth by enhancing immunity and increasing the expression of VEGF and miR-21. Therefore, the composites of UAP microcapsules have shown encouraging results as a potential dressing for wound healing.
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Affiliation(s)
- Mingjun Yang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Run Li
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Xinjian Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Xiaofeng Liu
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Baigang Zhang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
| | - Yonggang Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, Gansu Province 730000, People's Republic of China
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12
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Cam ME, Ertas B, Alenezi H, Hazar-Yavuz AN, Cesur S, Ozcan GS, Ekentok C, Guler E, Katsakouli C, Demirbas Z, Akakin D, Eroglu MS, Kabasakal L, Gunduz O, Edirisinghe M. Accelerated diabetic wound healing by topical application of combination oral antidiabetic agents-loaded nanofibrous scaffolds: An in vitro and in vivo evaluation study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111586. [PMID: 33321632 DOI: 10.1016/j.msec.2020.111586] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/05/2020] [Accepted: 09/28/2020] [Indexed: 12/24/2022]
Abstract
The combination of oral antidiabetic drugs, pioglitazone, metformin, and glibenclamide, which also exhibit the strongest anti-inflammatory action among oral antidiabetic drugs, were loaded into chitosan/gelatin/polycaprolactone (PCL) by electrospinning and polyvinyl pyrrolidone (PVP)/PCL composite nanofibrous scaffolds by pressurized gyration to compare the diabetic wound healing effect. The combination therapies significantly accelerated diabetic wound healing in type-1 diabetic rats and organized densely packed collagen fibers in the dermis, it also showed better regeneration of the dermis and epidermis than single drug-loaded scaffolds with less inflammatory cell infiltration and edema. The formation of the hair follicles started in 14 days only in the combination therapy and lower proinflammatory cytokine levels were observed compared to single drug-loaded treatment groups. The combination therapy increased the wettability and hydrophilicity of scaffolds, demonstrated sustained drug release over 14 days, has high tensile strength and suitable cytocompatibility on L929 (mouse fibroblast) cell and created a suitable area for the proliferation of fibroblast cells. Consequently, the application of metformin and pioglitazone-loaded chitosan/gelatin/PCL nanofibrous scaffolds to a diabetic wound area offer high bioavailability, fewer systemic side effects, and reduced frequency of dosage and amount of drug.
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Affiliation(s)
- Muhammet Emin Cam
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK; Center for Nanotechnology and Biomaterials Application and Research, Marmara University, Istanbul 34722, Turkey; Department of Pharmacology, Faculty of Pharmacy, Marmara University, Istanbul 34716, Turkey.
| | - Busra Ertas
- Department of Pharmacology, Faculty of Pharmacy, Marmara University, Istanbul 34716, Turkey
| | - Hussain Alenezi
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK; Department of Manufacturing Engineering, College of Technological Studies, PAAET, 13092 Kuwait City, Kuwait
| | - Ayse Nur Hazar-Yavuz
- Department of Pharmacology, Faculty of Pharmacy, Marmara University, Istanbul 34716, Turkey
| | - Sumeyye Cesur
- Center for Nanotechnology and Biomaterials Application and Research, Marmara University, Istanbul 34722, Turkey; Department of Metallurgy and Material Engineering, Faculty of Technology, Marmara University, Istanbul 34722, Turkey
| | - Gul Sinemcan Ozcan
- Department of Histology and Embryology, Faculty of Medicine, Marmara University, Istanbul 34854, Turkey
| | - Ceyda Ekentok
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Marmara University, Istanbul 34722, Turkey
| | - Ece Guler
- Center for Nanotechnology and Biomaterials Application and Research, Marmara University, Istanbul 34722, Turkey; Department of Pharmacology, Faculty of Pharmacy, Marmara University, Istanbul 34716, Turkey
| | - Christina Katsakouli
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
| | - Zehra Demirbas
- Department of Clinical Microbiology and Infectious Diseases, School of Medicine, Gazi University, Ankara 06510, Turkey
| | - Dilek Akakin
- Department of Histology and Embryology, Faculty of Medicine, Marmara University, Istanbul 34854, Turkey
| | - Mehmet Sayip Eroglu
- Department of Chemical Engineering, Faculty of Engineering, Marmara University, Istanbul 34722, Turkey; Chemistry Group Laboratories, TUBITAK-UME, Kocaeli 41470, Turkey
| | - Levent Kabasakal
- Department of Pharmacology, Faculty of Pharmacy, Marmara University, Istanbul 34716, Turkey
| | - Oguzhan Gunduz
- Center for Nanotechnology and Biomaterials Application and Research, Marmara University, Istanbul 34722, Turkey; Department of Metallurgy and Material Engineering, Faculty of Technology, Marmara University, Istanbul 34722, Turkey
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.
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13
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Shao H, Huang L, Duan S, Gao M, Zhu J, Chen X, Zhu Y, Wang W, Yang Z, Wang X, Wang Z, Wang Z, Ba Y, Zhang R, Li C, Zhang Q, Wang J, Liu H, Wu W, Feng F. Glyburide attenuates ozone-induced pulmonary inflammation and injury by blocking the NLRP3 inflammasome. ENVIRONMENTAL TOXICOLOGY 2020; 35:831-839. [PMID: 32167222 DOI: 10.1002/tox.22919] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 02/23/2020] [Accepted: 03/01/2020] [Indexed: 06/10/2023]
Abstract
Glyburide is a classic antidiabetic drug that is dominant in inflammation regulation, but its specific role in ozone-induced lung inflammation and injury remains unclear. In order to investigate whether glyburide prevents ozone-induced pulmonary inflammation and its mechanism, C57BL/6 mice were intratracheally pre-instilled with glyburide or the vehicle 1 hour before ozone (1 ppm, 3 hours) or filtered air exposure. After 24 hours, the total inflammatory cells and total protein in bronchoalveolar lavage fluid (BALF) were detected. The pathological alternations in lung tissues were evaluated by HE staining. The expression of NLRP3, interleukin-1β (IL-1β), and IL-18 protein in lung tissues was detected by immunohistochemistry. Western blotting was used to examine the levels of caspase-1 p10 and active IL-1β protein. Levels of IL-1β and IL-18 in BALF were measured using ELISA kits. Glyburide treatment decreased the total cells in BALF, the inflammatory score, and the mean linear intercept induced by ozone in lung tissues. In addition, glyburide inhibited the expression of NLRP3, IL-18, and IL-1β protein in lung tissues, and also suppressed NLRP3 inflammasome activation, including caspase-1 p10, active IL-1β protein in lung tissues, IL-1β, and IL-18 in BALF. These results demonstrate that glyburide effectively attenuates ozone-induced pulmonary inflammation and injury via blocking the NLRP3 inflammasome.
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Affiliation(s)
- Hua Shao
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Li Huang
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Shuyin Duan
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Min Gao
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Jiacheng Zhu
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaohui Chen
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Yajuan Zhu
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Wenhan Wang
- College of Medical Laboratory Technology, Zhengzhou University, Zhengzhou, Henan, China
| | - Zengwen Yang
- College of Medical Laboratory Technology, Zhengzhou University, Zhengzhou, Henan, China
| | - Xinyu Wang
- College of Medical Laboratory Technology, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhen Wang
- College of Medical Laboratory Technology, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhimin Wang
- College of Medical Laboratory Technology, Zhengzhou University, Zhengzhou, Henan, China
| | - Yue Ba
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Ruiqin Zhang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan, China
| | - Chunyang Li
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Qiao Zhang
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Wang
- Department of Pulmonary Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hong Liu
- Department of Pulmonary Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Weidong Wu
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan, China
| | - Feifei Feng
- College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
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Jiang Y, He R, Shi Y, Liang J, Zhao L. Plasma exosomes protect against cerebral ischemia/reperfusion injury via exosomal HSP70 mediated suppression of ROS. Life Sci 2020; 256:117987. [PMID: 32569778 DOI: 10.1016/j.lfs.2020.117987] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022]
Abstract
AIMS Ischemic stroke is the leading cause of severe disability and death worldwide. As the pathogenesis of stroke has not been clearly elucidated and the ability of current therapeutic drugs on crossing the blood-brain barrier (BBB) is extremely low, there is no effective strategy to treat stroke. We aim at investigating the specific advantages of using plasma exosomes (Pla-Exo) for targeting ischemic brain and exploring its underlying mechanism in neuroprotection. MAIN METHODS Pla-Exo was obtained by a gradient ultracentrifugation of fresh plasma. The quantification of penetrated Pla-Exo through BBB was investigated in vitro BBB model, furthermore, the effects of Pla-Exo and exosomal HSP70 on cerebral ischemia/reperfusion injury were evaluated. KEY FINDINGS Pla-Exo enhanced BBB crossing by specific interaction between Pla-Exo inherited heat shock protein 70 (HSP70) and endothelial Toll-like receptor 4 (TLR4). As expected, Pla-Exo increased HSP70 expression in the ischemic region through the transfer of HSP70, and led to HSP70 mediated suppression of ROS, thus alleviating cerebral ischemia/reperfusion (I/R) injury by attenuating the deterioration of BBB and preventing mitochondria damage. SIGNIFICANCE These findings indicated that Pla-Exo can provide protection against ischemia-reperfusion injury via the regulation of HSP70 and it should be further studied as a potential candidate for protection against ischemic injury.
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Affiliation(s)
- Yibing Jiang
- School of Pharmacy, Jinzhou Medical University, Jinzhou 121000, PR China
| | - Ruyi He
- School of Pharmacy, Jinzhou Medical University, Jinzhou 121000, PR China
| | - Yijie Shi
- School of Pharmacy, Jinzhou Medical University, Jinzhou 121000, PR China
| | - Jia Liang
- Life Science Institution, Jinzhou Medical University, Jinzhou 121000, PR China
| | - Liang Zhao
- School of Pharmacy, Jinzhou Medical University, Jinzhou 121000, PR China.
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15
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Blockade of receptor for advanced glycation end products improved essential response of inflammation in diabetic wound healing. Int J Diabetes Dev Ctries 2019. [DOI: 10.1007/s13410-019-00778-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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16
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Accelerated wound healing in diabetes by reprogramming the macrophages with particle-induced clustering of the mannose receptors. Biomaterials 2019; 219:119340. [DOI: 10.1016/j.biomaterials.2019.119340] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 07/08/2019] [Accepted: 07/08/2019] [Indexed: 12/11/2022]
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17
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Evaluation of an Electro-Pneumatic Device for Artificial Capillary Pulse Generation used in a Prospective Study in Animals for Surgical Neck Wound Healing. Sci Rep 2019; 9:9837. [PMID: 31285533 PMCID: PMC6614409 DOI: 10.1038/s41598-019-46397-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 06/25/2019] [Indexed: 11/25/2022] Open
Abstract
The paper examines the development and testing of an electro-pneumatic device for wound healing therapy after surgery in the neck area. The device generates air pressure values in a miniaturized cuff using electronic circuitry to drive an electro-valve and air compressor. The device works in two distinct modes: continuous pressure mode and pulsating pressure mode. The pressure value setting can vary from 3 to 11 mmHg, and the pulsating pressure mode’s operating frequency range is approximately 0.1 to 0.3 Hz. Laboratory measurements were conducted to evaluate the device’s correct functioning in both continuous and pulsating pressure modes. A four-day prospective study with animals (n = 10) was also conducted to evaluate neck wound healing therapy using the electro-pneumatic device. Out of the twelve histological parameters analysed to reveal the differences between the experimental and control wounds, only one demonstrated a significant difference. Out of the ten animals treated with the device, three showed a significant difference in terms of benefit after therapy. We can therefore conclude that the device potentially improves the wound healing process in the neck area if the pre-set air pressure value does not exceed 8 mmHg.
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Li F, Shi Y, Liang J, Zhao L. Curcumin-loaded chitosan nanoparticles promote diabetic wound healing via attenuating inflammation in a diabetic rat model. J Biomater Appl 2019; 34:476-486. [PMID: 31280635 DOI: 10.1177/0885328219860929] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Fang Li
- 1 School of Pharmacy, Jinzhou Medical University, Jinzhou, PR China
| | - Yijie Shi
- 1 School of Pharmacy, Jinzhou Medical University, Jinzhou, PR China
| | - Jia Liang
- 2 Life Science Institution, Jinzhou Medical University, Jinzhou, PR China
| | - Liang Zhao
- 1 School of Pharmacy, Jinzhou Medical University, Jinzhou, PR China
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Eleftheriadou I, Tentolouris A, Tentolouris N, Papanas N. Advancing pharmacotherapy for diabetic foot ulcers. Expert Opin Pharmacother 2019; 20:1153-1160. [PMID: 30958725 DOI: 10.1080/14656566.2019.1598378] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Standard treatment for diabetic foot ulcers (DFUs) includes off-loading, debridement, moisture balance, management of infection and peripheral arterial disease (PAD) as well as adequate glycemic control. The outcomes so far are unsatisfactory. AREAS COVERED Herein, the authors provide an outline of newer pharmacological agents for the management of DFUs and give their expert perspectives on future treatment strategies. EXPERT OPINION Evidence-based healthcare calls for high quality evidence from large RCTs before the implementation of new guidelines for the management of DFUs. Empagliflozin and liraglutide can be recommended for glucose control in patients with DFUs and PAD, while intensive lipid lowering therapy with evolocumab when primary cholesterol goals are not met could be offered to patients with DFUs. Further clinical studies are warranted to develop a structured algorithm for the treatment of DFUs that fail to heal after four weeks of current standard of care. Sucrose octasulfate dressings, becaplermin gel, and platelet-rich plasma (PRP) could also be considered as advanced treatment options for the management of hard to heal DFUs.
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Affiliation(s)
- Ioanna Eleftheriadou
- a Diabetes Centre, First Department of Propaedeutic Internal Medicine , Medical School, National and Kapodistrian University of Athens, Laiko General Hospital , Athens , Greece
| | - Anastasios Tentolouris
- a Diabetes Centre, First Department of Propaedeutic Internal Medicine , Medical School, National and Kapodistrian University of Athens, Laiko General Hospital , Athens , Greece
| | - Nikolaos Tentolouris
- a Diabetes Centre, First Department of Propaedeutic Internal Medicine , Medical School, National and Kapodistrian University of Athens, Laiko General Hospital , Athens , Greece
| | - Nikolaos Papanas
- b Diabetes Centre-Diabetic Foot Clinic, Second Department of Internal Medicine , Democritus University of Thrace , Alexandroupolis , Greece
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