Abstract:
:Delayed wound healing is one of the major complications in diabetes and is characterized by chronic proinflammatory response, and abnormalities in angiogenesis and collagen deposition. Sirtuin family proteins regulate numerous pathophysiological processes, including those involved in promotion of longevity, DNA repair, glycolysis and inflammation. However, the role of sirtuin 6 (SIRT6), a NAD+-dependent nuclear deacetylase, in wound healing specifically under diabetic condition remains unclear. To analyse the role of SIRT6 in cutaneous wound healing, paired 6-mm stented wound was created in diabetic db/db mice and injected siRNA against SIRT6 in the wound margins (transfection agent alone and nonsense siRNA served as controls). Wound time to closure was assessed by digital planimetry, and wounds were harvested for histology, immunohistochemistry and Western blotting. SIRT6-siRNA-treated diabetic wound showed impaired healing, which was associated with reduced capillary density (CD31-staining vessels) when compared to control treatment. Interestingly, SIRT6 deficiency decreased vascular endothelial growth factor expression and proliferation markers in the wounds. Furthermore, SIRT6 ablation in diabetic wound promotes nuclear factor-κB (NF-κB) activation resulting in increased expression of proinflammatory markers (intercellular adhesion molecule-1, vascular cell adhesion molecule-1, tumor necrosis factor-α and interleukin-1β) and increased oxidative stress. Collectively, our findings demonstrate that loss of SIRT6 in cutaneous wound aggravates proinflammatory response by increasing NF-κB activation, oxidative stress and decrease in angiogenesis in the diabetic mice. Based on these findings, we speculate that the activation of SIRT6 signalling might be a potential therapeutic approach for promoting wound healing in diabetics.
journal_name
Exp Dermatoljournal_title
Experimental dermatologyauthors
Thandavarayan RA,Garikipati VN,Joladarashi D,Suresh Babu S,Jeyabal P,Verma SK,Mackie AR,Khan M,Arumugam S,Watanabe K,Kishore R,Krishnamurthy Pdoi
10.1111/exd.12762subject
Has Abstractpub_date
2015-10-01 00:00:00pages
773-8issue
10eissn
0906-6705issn
1600-0625journal_volume
24pub_type
杂志文章abstract::In the 1970s, studies of tissue architecture and cell proliferation were used to formulate a new model of epidermal homeostasis. This asserted that the tissue was maintained by long-lived, slow-cycling, self-renewing stem cells that generate a short-lived population of transit amplifying (TA) cells, which undergo term...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0625.2012.01447.x
更新日期:2012-04-01 00:00:00
abstract::Macrophages play important roles in immunity and inflammation, and in allergic, granulomatous and neoplastic diseases. Here, we present the indepth results of an ongoing study of macrophage differentiation pathways in cutaneous macrophage disorders and in vitro. Up to now, a total of 40 cases of cutaneous macrophage d...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.1994.tb00287.x
更新日期:1994-12-01 00:00:00
abstract::Plasmatic proteasome (p-proteasome) also called circulating proteasome has recently been described as a tumor marker. We investigated the diagnostic and prognostic accuracies of p-proteasome levels in a melanoma population classified according to the American Joint Committee on Cancer staging system. Using an ELISA te...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2010.01151.x
更新日期:2010-12-01 00:00:00
abstract::It is not clear whether TNF-α antagonists used in the treatment of psoriasis need to act systemically, or whether local inhibition of skin-produced TNF-α would be sufficient to silence skin inflammation. To answer this question, we conducted two multicentre, double-blinded, randomized, placebo-controlled clinical tria...
journal_title:Experimental dermatology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1111/exd.12927
更新日期:2016-06-01 00:00:00
abstract::Drug resistance in melanoma is commonly attributed to ineffective apoptotic pathways. Targeting apoptosis regulators is thus considered a promising approach to sensitizing melanoma to therapy. In the previous issue of Experimental Dermatology, Plötz and Eberle discuss the role that apoptosis plays in melanoma progress...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12400
更新日期:2014-07-01 00:00:00
abstract::Mast cells, eosinophils and basophils are central effector immune cells in allergic skin inflammation including atopic dermatitis (AD). Recent studies revealed that the bidirectional interaction between these three immune cell types (mast cells, eosinophils and basophils) and the nervous system is involved in the path...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1111/exd.14014
更新日期:2019-12-01 00:00:00
abstract::We investigated the effects of a single dose of mouse interleukin-31 (IL-31) on scratching behaviour in comparison with spontaneous skin-lesion- or serotonin (5-HT)- induced scratching behaviour in NC/Nga and BALB/c mice. Intradermal (i.d.) injection of IL-31 caused a gradual increase in long-lasting scratching (LLS, ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12222
更新日期:2013-10-01 00:00:00
abstract::Psoriasis is a chronic skin disease caused by immune disorder. The chronic skin inflammation involves inflammatory molecules that are released from T lymphocytes and keratinocytes. Therefore, developing an anti-inflammatory therapy that is suitable for long-term treatment is needed. Electrical stimulation induces biol...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.13720
更新日期:2018-10-01 00:00:00
abstract::Calcium-mediated signals play important roles in epidermal barrier formation, skin homoeostasis and wound repair. Calmodulin 4 (Calm4) is a small, Ca2+ -binding protein with strong expression in suprabasal keratinocytes. In mice, Calm4 first appears in the skin at the time of barrier formation, and its expression incr...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/exd.12568
更新日期:2015-01-01 00:00:00
abstract::In the area of dermatological research, the knowledge of rate and extent of substance penetration into the human skin is essential not only for evaluation of therapeutics, but also for risk assessment of chemicals and cosmetic ingredients. Recently, confocal Raman microscopy emerged as a novel analytical technique for...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/exd.12542
更新日期:2014-12-01 00:00:00
abstract::Malignant melanoma is a tumor characterized by the uncontrolled proliferation of melanocytes, mainly in skin, but also in eyes. Its incidence is rising each year. To improve the diagnosis and treatment of the tumor, it is essential to develop new effective methods to early detect and characterize melanoma. Previously,...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2012.01461.x
更新日期:2012-05-01 00:00:00
abstract::Hair follicle central isthmus is surrounded by dense nerve endings and terminal Schwann cells (TSCs), forming a specialized sensory structure called lanceolate complexes. Extracellular matrix protein EGFL6 expressed from epidermis has been found closely associated with lanceolate complexes and important for proper ali...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.14085
更新日期:2020-04-01 00:00:00
abstract::Ultraviolet B (UVB) radiation induces inflammation in the skin specifically at the site of exposure. We unexpectedly found that UVB-induced inflammation was not induced in gp91phox-depleted mice. To test whether gp91phox is directly involved in UVB-induced inflammation, neutrophil- and hyaluronic acid-depleted mice we...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12032
更新日期:2012-12-01 00:00:00
abstract::The last decade has seen a considerable improvement in the understanding of the biology of melanoma. Advances have come in the understanding of the importance of critical oncogenes and tumour suppressor genes, epigenetic phenomena, signalling pathways, drug resistance mechanisms, the pivotal role of the local immune s...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0625.2007.00673.x
更新日期:2008-05-01 00:00:00
abstract::During aging, increases in the number of senescent cells are seen in various tissues. On the other hand, stem cells play crucial roles in tissue repair and homeostasis. Therefore, it is likely that stem cells give rise to new cells that replace senescent cells. However, how stem cells contribute to homeostasis in the ...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/exd.12701
更新日期:2015-07-01 00:00:00
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2003.00125.x
更新日期:2003-12-01 00:00:00
abstract::Shprintzen-Goldberg syndrome (SGS) is a rare disorder characterized by a Marfan-like habitus, mental retardation and craniosynostosis. Cardiac abnormalities, such as aortic root dilation have also been noted as well as several skeletal abnormalities. Its nosological status is unclear as it is hard to delineate SGS fro...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2007.00648.x
更新日期:2008-04-01 00:00:00
abstract::More than 40 null mutations in the filaggrin (FLG) gene are described. It is therefore possible to find two different null mutations in one individual (compound heterozygosity). It has been generally perceived that homozygous and compound heterozygous individuals were genotypically comparable; however, this has not be...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12199
更新日期:2013-09-01 00:00:00
abstract::Chronic exposure to ultraviolet (UV) radiation alters components of the skin. We previously reported that chronic low-dose UV irradiation induced wrinkle formation but did not significantly alter dermal components of hairless mice. In the present study, we examined whether the epidermal changes by UV irradiation could...
journal_title:Experimental dermatology
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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journal_title:Experimental dermatology
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2008.00705.x
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journal_title:Experimental dermatology
pub_type: 杂志文章
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2008.00719.x
更新日期:2008-10-01 00:00:00
abstract::5-methoxypsoralen (5-MOP) is considered an alternative to 8-methoxypsoralen (8-MOP) for photochemotherapy of psoriasis. We have compared the clinical efficacy and tolerability of 5-MOP (1.2 mg/kg)-UVA versus 8-MOP (0.6 mg/kg)-UVA therapy in 25 patients of skin type III and IV, affected by relapsing plaque-type psorias...
journal_title:Experimental dermatology
pub_type: 临床试验,杂志文章
doi:10.1111/j.1600-0625.1992.tb00071.x
更新日期:1992-07-01 00:00:00
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journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.1995.tb00057.x
更新日期:1995-12-01 00:00:00
abstract::Ichthyosis follicularis, alopecia and photophobia (IFAP) syndrome is an X-linked genodermatosis with congenital atrichia being the most prominent feature. Recently, we have shown that functional deficiency of MBTPS2 (membrane-bound transcription factor protease site 2) - a zinc metalloprotease essential for cholestero...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/j.1600-0625.2010.01238.x
更新日期:2011-05-01 00:00:00
abstract::Wounds close by keratinocytes migrating from the edge of the wound and re-epithelializing the epidermis. It has been proposed that the major stimuli for wound closure are blood-derived growth factors, chemokines and cytokines. The small GTPase R-Ras, a known integrin activator, also regulates vascular permeability dur...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.13851
更新日期:2019-02-01 00:00:00
abstract::The role of T cells in the pathogenesis of psoriasis is widely acknowledged. However, key aspects of their precise function in the disease as well as the relative pathogenic contribution of T-cell subsets are still unknown. T-cell clones have been isolated from psoriatic plaques but a study of conditions affecting the...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2004.00195.x
更新日期:2004-10-01 00:00:00
abstract::The presence of albumin in the human epidermis has been reported more than a decade ago, but until now, it was assumed that this protein is synthesized in the liver and transported to the avascular skin. To our knowledge, transcription of albumin in the human epidermis was never considered. In this report, we present ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2005.00265.x
更新日期:2005-03-01 00:00:00
abstract::A causative link between emotional stress and acne has long been postulated. There is mounting evidence that the molecular mechanism underlying this observation is related to the expression of receptors for several neuroendocrine mediators by the sebaceous gland. Recent and ongoing studies have indicated that human se...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0625.2004.00254.x
更新日期:2004-01-01 00:00:00