Abstract:
PURPOSE:Activation of adenosine monophosphate-activated protein kinase (AMPK) by metformin, as a master regulator of metabolism, is involved in airway tissue remodeling. Here, we investigated the physical role of AMPK on cell migration, matrix contraction, and the production of matrix metalloproteinases (MMP) in nasal polyp-derived fibroblasts (NPDF). METHODS:Primary NPDFs from six patients with chronic rhinosinusitis and nasal polyps were isolated and cultured. To assess the effect of AMPK on fibroblast migration, we conducted scratch and migration assays in NPDF treated with metformin and/or compound C. A collagen gel contraction assay measured activity of contractile. MMP expression was measured with reverse transcription-polymerase chain reaction, Western blot, and zymography. To evaluate for specific AMPK action, we examined by AMPK small interfering RNA. RESULTS:Metformin, an activator of AMPK, significantly inhibited cell migration in NPDFs in a dose-dependent manner. Compound C, an inhibitor of AMPK, partially reversed the inhibitory effect of metformin. Metformin also significantly decreased contractile activity, with a concomitant reduction in the production of MMP-1 and MMP-2 but not of MMP-9. Specific silencing that targeted AMPK resulted in the enhancement of mobility and contractility and in the production of MMP-1 and MMP-2. CONCLUSION:AMPK played an important role in regulating cell migration, matrix contraction, and MMP production in NPDFs, which provided data that AMPK activator might be a therapeutic target for the prevention of tissue remodeling in nasal polyps.
journal_name
Am J Rhinol Allergyjournal_title
American journal of rhinology & allergyauthors
Um JY,Lee SA,Park JH,Shin JM,Park IH,Lee HMdoi
10.2500/ajra.2017.31.4477subject
Has Abstractpub_date
2017-11-01 00:00:00pages
357-363issue
6eissn
1945-8924issn
1945-8932journal_volume
31pub_type
杂志文章abstract:BACKGROUND:Chronic rhinosinusitis (CRS) has a multifactorial etiology, with a debate about the role of inhalant allergy in the pathogenesis of CRS. OBJECTIVE:This study assessed the impact of allergy status on externalized paranasal sinuses after tumor resection to determine if a predisposition to inhalant allergy bro...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
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更新日期:2013-11-01 00:00:00
abstract:BACKGROUND:Viral respiratory tract infections are associated with a significant burden of disease and represent one of the leading causes of mortality worldwide. The current Coronavirus Disease 2019 (COVID-19) pandemic highlights the devastating toll that respiratory viruses have on humanity and the desperate need to u...
journal_title:American journal of rhinology & allergy
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2013.27.3939
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:Acute invasive fungal rhinosinusitis (AIFR) is an aggressive opportunistic infection with a high mortality rate. There are few reports that demonstrate an improvement in the overall prognosis. Furthermore, definite prognostic factors related to patient survival remain unclear. OBJECTIVE:The objective of thi...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2015.29.4115
更新日期:2015-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
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更新日期:2009-03-01 00:00:00
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更新日期:2014-07-01 00:00:00
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journal_title:American journal of rhinology & allergy
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journal_title:American journal of rhinology & allergy
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更新日期:2012-01-01 00:00:00
abstract::Background Since the Food and Drug Administration approval of balloon sinuplasty (BSP) in 2005, no nationally representative population-based studies have examined the outcomes and adverse events of BSP. Objective To assess the rates of complications and revision surgery in patients who received BSP, functional endosc...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.1177/1945892418782248
更新日期:2018-09-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
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更新日期:2016-05-01 00:00:00
abstract:BACKGROUND:The purpose of this study was to investigate the expression and distribution of superoxide anion, NADPH oxidase (NOX)1, and NOX4 in healthy, allergic nasal mucosa and nasal polyps to evaluate the possible influence of oxidative stress on the development of allergic rhinitis and nasal polyps. METHODS:The exp...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2009.23.3340
更新日期:2009-07-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,评审
doi:10.2500/ajra.2010.24.3499
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:Chronic rhinosinusitis (CRS) with nasal polyps (CRSwNP) and asthma are strongly associated, and patients suffering from both diseases are often difficult to treat. However, no guidelines about the management of patients with CRS and coexisting asthma exist. OBJECTIVE:The purpose of this systematic review wa...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,评审
doi:10.2500/ajra.2015.29.4178
更新日期:2015-05-01 00:00:00
abstract:BACKGROUND:Concerns over radiation exposure with paranasal sinus computed tomography (CT) have recently evolved. Magnetic resonance imaging (MRI) may be more advantageous in this regard, but the diagnostic assessment of MRI in chronic rhinosinusitis (CRS) has not been reported. The purpose of this study was to determin...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
doi:10.2500/ajra.2009.23.3260
更新日期:2009-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,meta分析
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更新日期:2016-09-30 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
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更新日期:2011-11-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2014-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.1177/1945892418804904
更新日期:2019-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2011.25.3541
更新日期:2011-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2014.28.4087
更新日期:2014-11-01 00:00:00
abstract::Surgery for chronic rhinosinusitis is an effective complement to a well-designed medical regimen. Functional endoscopic sinus surgery is among the most common surgeries performed for sinonasal disease refractory to maximal medical therapy. Nasal surgery techniques, such as septoplasty and inferior turbinate surgery, m...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,评审
doi:10.2500/ajra.2013.27.3897
更新日期:2013-05-01 00:00:00
abstract:OBJECTIVES:Identification of the most common aeroallergens to which patients are sensitized in a specific area is important in the diagnosis and treatment of allergic rhinitis (AR). We determined the distribution of aeroallergens, detected by skin-prick tests (SPT), in adult patients with AR in the Eastern Black Sea re...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2016.30.4353
更新日期:2016-09-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
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更新日期:2013-05-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,评审
doi:10.2500/ajra.2016.30.4348
更新日期:2016-09-01 00:00:00
abstract:BACKGROUND:Topical nasal sprays are commonly prescribed for sinonasal disease. Nasal drops applied in a head-down position are described alternatively to sprays. Multiple research methods have investigated the deposition pattern of intranasal medications, each with limitations. This pilot study analyzed the use of a co...
journal_title:American journal of rhinology & allergy
pub_type: 临床试验,杂志文章
doi:10.2500/ajra.2011.25.3569
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:The clinical importance of serum squamous cell carcinoma antigen (SCCA) and SCCA subclasses has not been established for treating inverted papilloma (IP). The aim of this study was to clarify the clinical importance of serum SCCA and its subclasses in IP, compared with maxillary squamous cell carcinoma and ...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2012.26.3797
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND:A 10- to 15-mm L-strut in the dorsal and caudal areas of the nasal septum is preserved during septoplasty to maintain structural stability and prevent external deformity. However, during endoscopically performed septoplasty the surgeon has a very different perspective, which may create a more challenging sit...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2014.28.4042
更新日期:2014-05-01 00:00:00