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  1. Article ; Online: Molecular pathways of NF-ĸB and NLRP3 inflammasome as potential targets in the treatment of inflammation in diabetic wounds: A review.

    Teh, Huey Xhin / Phang, Shou Jin / Looi, Mee Lee / Kuppusamy, Umah Rani / Arumugam, Bavani

    Life sciences

    2023  Volume 334, Page(s) 122228

    Abstract: Diabetic wounds are slow healing wounds characterized by disordered healing processes and frequently take longer than three months to heal. One of the defining characteristics of impaired diabetic wound healing is an abnormal and unresolved inflammatory ... ...

    Abstract Diabetic wounds are slow healing wounds characterized by disordered healing processes and frequently take longer than three months to heal. One of the defining characteristics of impaired diabetic wound healing is an abnormal and unresolved inflammatory response, which is primarily brought on by abnormal macrophage innate immune signaling activation. The persistent inflammatory state in a diabetic wound may be attributed to inflammatory pathways such as nuclear factor kappa B (NF-ĸB) and nod-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome, which have long been associated with inflammatory diseases. Despite the available treatments for diabetic foot ulcers (DFUs) that include debridement, growth factor therapy, and topical anti-bacterial agents, successful wound healing is still hampered. Further understanding of the molecular mechanism of these pathways could be useful in designing potential therapeutic targets for diabetic wound healing. This review provides an update and novel insights into the roles of NF-ĸB and NLRP3 pathways in the molecular mechanism of diabetic wound inflammation and their potential as therapeutic targets in diabetic wound healing.
    MeSH term(s) Humans ; Diabetes Mellitus ; Diabetic Foot/drug therapy ; Inflammasomes/metabolism ; Inflammation/drug therapy ; NF-kappa B/metabolism ; NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
    Chemical Substances Inflammasomes ; NF-kappa B ; NLR Family, Pyrin Domain-Containing 3 Protein ; NLRP3 protein, human
    Language English
    Publishing date 2023-11-01
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 3378-9
    ISSN 1879-0631 ; 0024-3205
    ISSN (online) 1879-0631
    ISSN 0024-3205
    DOI 10.1016/j.lfs.2023.122228
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Phlorotannins from brown algae: a review on their antioxidant mechanisms and applications in oxidative stress-mediated diseases

    Phang, Shou Jin / Teh, Huey Xhin / Looi, Mee Lee / Arumugam, Bavani / Fauzi, Mh Busra / Kuppusamy, Umah Rani

    J Appl Phycol. 2023 Apr., v. 35, no. 2 p.867-892

    2023  

    Abstract: Phlorotannins are polyphenolic compounds that are exclusively derived from marine brown algae. The molecular structure of phlorotannins with numerous phenol rings endows them with excellent radical scavenging and antioxidant properties. Oxidative stress ... ...

    Abstract Phlorotannins are polyphenolic compounds that are exclusively derived from marine brown algae. The molecular structure of phlorotannins with numerous phenol rings endows them with excellent radical scavenging and antioxidant properties. Oxidative stress plays a central role in the pathogenesis of many diseases, including neurodegenerative diseases, hepatic diseases, skin diseases, diabetes and retinal diseases. Therefore, phlorotannins have been explored as potential antioxidant compounds to counteract the oxidative damage induced during disease development. The antioxidant mechanisms of phlorotannins are not only limited to the direct scavenging of reactive oxygen species (ROS) but also via the inhibition of ROS production and the activation of antioxidant defence mechanisms. In this review, we highlight the antioxidant properties and mechanisms of action of phlorotannins in the context of several oxidative stress-mediated diseases using evidence from in vitro and in vivo studies. Despite the promising antioxidant potential of phlorotannins, their translational applications are hindered by the poor bioavailability and biostability. Hence, the encapsulation of phlorotannins into various drug carriers like nanoparticles and nanofibres has been greatly explored. Taken together, these findings propose phlorotannins as potential therapeutics in the advancement of current treatment available for different oxidative stress-mediated diseases.
    Keywords antioxidant activity ; bioavailability ; chemical structure ; diabetes ; drugs ; encapsulation ; nanofibers ; nanoparticles ; oxidative stress ; pathogenesis ; phenol ; phlorotannins ; reactive oxygen species ; therapeutics
    Language English
    Dates of publication 2023-04
    Size p. 867-892.
    Publishing place Springer Netherlands
    Document type Article ; Online
    Note Review
    ZDB-ID 1002324-0
    ISSN 1573-5176 ; 0921-8971
    ISSN (online) 1573-5176
    ISSN 0921-8971
    DOI 10.1007/s10811-023-02913-4
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: PVA/PVP Nanofibres Incorporated with Ecklonia cava Phlorotannins Exhibit Excellent Cytocompatibility and Accelerate Hyperglycaemic Wound Healing.

    Phang, Shou Jin / Teh, Huey Xhin / Looi, Mee Lee / Fauzi, Mh Busra / Neo, Yun Ping / Arumugam, Bavani / Kuppusamy, Umah Rani

    Tissue engineering and regenerative medicine

    2023  Volume 21, Issue 2, Page(s) 243–260

    Abstract: Background: Diabetic foot ulcer (DFU) is a major debilitating complication of diabetes. The lack of effective diabetic wound dressings has been a significant problem in DFU management. In this study, we aim to establish a phlorotannin-incorporated ... ...

    Abstract Background: Diabetic foot ulcer (DFU) is a major debilitating complication of diabetes. The lack of effective diabetic wound dressings has been a significant problem in DFU management. In this study, we aim to establish a phlorotannin-incorporated nanofibre system and determine its potential in accelerating hyperglycaemic wound healing.
    Methods: The effective dose of Ecklonia cava phlorotannins (ECP) for hyperglycaemic wound healing was determined prior to phlorotannin nanofibre fabrication using polyvinyl-alcohol (PVA), polyvinylpyrrolidone (PVP), and ECP. Vapour glutaraldehyde was used for crosslinking of the PVA/PVP nanofibres. The phlorotannin nanofibres were characterised, and their safety and cytocompatibility were validated. Next, the wound healing effect of phlorotannin nanofibres was determined with 2D wound scratch assay, whereas immunofluorescence staining of Collagen-I (Col-I) and Cytokeratin-14 (CK-14) was performed in human dermal fibroblasts (HDF) and human epidermal keratinocytes (HEK), respectively.
    Results: Our results demonstrated that 0.01 μg/mL ECP significantly improved hyperglycaemic wound healing without compromising cell viability and proliferation. Among all nanofibres, PVA/PVP/0.01 wt% ECP nanofibres exhibited the best hyperglycaemic wound healing effect. They displayed a diameter of 334.7 ± 10.1 nm, a porosity of 40.7 ± 3.3%, and a WVTR of 1718.1 ± 32.3 g/m
    Conclusion: Taken together, our findings show that phlorotannin nanofibres have the potential to be used as a diabetic wound dressing.
    MeSH term(s) Humans ; Nanofibers ; Hyperglycemia ; Glutaral/pharmacology ; Wound Healing ; Diabetes Mellitus/drug therapy ; Collagen Type I
    Chemical Substances Glutaral (T3C89M417N) ; Collagen Type I
    Language English
    Publishing date 2023-10-21
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2677535-9
    ISSN 2212-5469 ; 1738-2696
    ISSN (online) 2212-5469
    ISSN 1738-2696
    DOI 10.1007/s13770-023-00590-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Advancements in Extracellular Matrix-Based Biomaterials and Biofabrication of 3D Organotypic Skin Models.

    Phang, Shou Jin / Basak, Soumyadeep / Teh, Huey Xhin / Packirisamy, Gopinath / Fauzi, Mh Busra / Kuppusamy, Umah Rani / Neo, Yun Ping / Looi, Mee Lee

    ACS biomaterials science & engineering

    2022  Volume 8, Issue 8, Page(s) 3220–3241

    Abstract: Over the last decades, three-dimensional (3D) organotypic skin models have received enormous attention as alternative models ... ...

    Abstract Over the last decades, three-dimensional (3D) organotypic skin models have received enormous attention as alternative models to
    MeSH term(s) Animals ; Biocompatible Materials/pharmacology ; Bioprinting/methods ; Extracellular Matrix ; Humans ; Tissue Engineering/methods
    Chemical Substances Biocompatible Materials
    Language English
    Publishing date 2022-07-21
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ISSN 2373-9878
    ISSN (online) 2373-9878
    DOI 10.1021/acsbiomaterials.2c00342
    Database MEDical Literature Analysis and Retrieval System OnLINE

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