Abstract：
OBJECTIVES:The purpose of this study was to investigate the effects of 5-aminolaevulinic acid mediated photodynamic therapy (ALA-PDT) on the survival activity and apoptosis of human melanoma cell line A375 and non-melanoma skin carcinoma cell line A431 cells. The mechanism for cellular apoptosis was explored. METHODS:The cell survival activity was determined by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay and the proportion of apoptotic cells was detected by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining. The expression levels of Bcl-2, Bax, caspase-3, caspase-8 and caspase-9 protein were assessed by western blot. The subcellular localization of cytochrome c was comparatively investigated by immunohistochemistry between pre-ALA-PDT and post- ALA-PDT. RESULTS:ALA-PDT significantly inhibited the survival activity of A375 cells and A431 cells in a dose- and time-dependent manner. The optimum inhibition efficiencies for A375 cells and A431 cells were obtained at 0.6 mM ALA at 4 h and 8 h after ALA-PDT, respectively. The phenomena of apoptosis were observed in ALA-PDT treated cells by TUNEL assay. The apoptotic rates of A375 cells and A431 cells were 90.0% and 61.5% at 6 h after ALA-PDT, respectively. Apoptosis induced by ALA-PDT involved in down-regulation of Bcl-2 protein, up-regulation of Bax protein and cleaved-PARP protein. It was observed that the expression of cleaved- caspase-3, caspase-8 and caspase-9 proteins in A375 cells and A431 cells gradually increased in 2 h and 4 h but decreased at 4-6 h and 6-8 h after ALA-PDT, respectively. In apoptosis cells immunohistochemical localization show that cytochrome C diffused from the mitochondria into the cytosol. CONCLUSION:ALA-PDT could significantly inhibit the survival activity of A375 and A431 cells. The apoptosis induced by ALA-PDT in A375 and A431 cells was related to the caspase-dependent death-receptor pathway and Cytochrome c-dependent mitochondrial pathway.
journal_name
Photodiagnosis Photodyn Therjournal_title
Photodiagnosis and photodynamic therapyauthors
Cai J,Zheng Q,Huang H,Li Bdoi
10.1016/j.pdpdt.2018.01.004subject
Has Abstractpub_date
2018-03-01 00:00:00pages
257-262eissn
1572-1000issn
1873-1597pii
S1572-1000(16)30157-0journal_volume
21pub_type
杂志文章abstract：:Squamous cell carcinoma (SCC) remains the second most common nonmelanoma skin cancer (NMSC) worldwide. Both acitretin and 5-Aminolevulinic acid mediated photodynamic therapy (ALA-PDT) have validated effect on SCC. However, the effects of both treatmens remain limited, and there has been no report concerning the potent...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2020.101887
更新日期：2020-09-01 00:00:00
abstract：BACKGROUND:Photodynamic therapy (PDT) is considered an important and innovative treatment for healing skin wounds. Skin ulcers with sinus tract formation are rare and difficult to treat in the field of dermatology. Herein, we utilized optical fibers as a light source to penetrate the sinus tract and applied PDT to trea...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2020.101802
更新日期：2020-09-01 00:00:00
abstract：BACKGROUND AND OBJECTIVES:This study aimed to compare the efficacy of fluorescein angiography (FA)-guided and indocyanine green angiography (ICGA)-guided half-time photodynamic therapy (PDT) for central serous chorioretinopathy (CSC). SUBJECTS AND METHODS:Medical records of 61 eyes of 61 CSC patients who underwent hal...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2020.101955
更新日期：2020-09-01 00:00:00
abstract：BACKGROUND:This study investigated the relationship between manual dexterity and dental biofilm accumulation in independent older Koreans using Quantitative Light-Induced Fluorescence-Digital (QLF-D). METHODS:This cross-sectional study included 44 participants recruited from senior welfare facilities in South Korea an...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章,多中心研究
doi：10.1016/j.pdpdt.2018.11.007
更新日期：2019-03-01 00:00:00
abstract：BACKGROUND:Photodynamic therapy (PDT) and diagnosis (PDD) using 5-aminolevulinic acid (ALA) to control the production of the intracellular photosensitizer protoporphyrin IX (PpIX) are commonly used clinically. Previously, we demonstrated that dormant and drug-induced dormancy-like cancer cells accumulated high PpIX lev...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2020.101893
更新日期：2020-09-01 00:00:00
abstract：AIM:To assess the efficacy of phototherapy on bond strength and microleakage of bulk fill composites in comparison to conventional dentin surface treatments. MATERIALS AND METHODS:Ninety human third molars were divided into 3 groups (n = 30 each) according to surface conditioning treatment. Group 1 (Etch and Bond) EB,...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2018.12.014
更新日期：2019-03-01 00:00:00
abstract：:Staphylococcus aureus is responsible for skin and soft tissue infections. Having in mind increased antibiotic resistance, in this study the efficacy of antimicrobial photodynamic therapy (aPDT) with a porphyrinic formulation (FORM) as photosensitizer (PS) to photoinactivate methicillin-resistant Staphylococcus aureus ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2020.101754
更新日期：2020-06-01 00:00:00
abstract：:In Endodontics, photosensitizers' such as methylene blue and toluidine blue have been used in Photodynamic Therapy due to their positive results. However, they can stain the dentin from the root canal after Photodynamic Therapy (PDT). The present in vitro study aimed to evaluate different stain removal protocols from ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2017.10.024
更新日期：2017-12-01 00:00:00
abstract：BACKGROUND:Recently, 5-aminolevulinic acid-based photodynamic therapy (ALA-PDT) is being widely used in cancer therapy owing to the tumor-specific accumulation of photosensitizing protoporphyrin IX (PpIX) after the administration of ALA. In the present study, by focusing on genes involved in the porphyrin biosynthesis ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2011.12.004
更新日期：2012-09-01 00:00:00
abstract：BACKGROUND:In this study, the photosensitivity of 5-aminolevulinic acid (5-ALA) conjugated gold nanoparticles (conjugate) has been investigated on the MeL-Rm cell line. METHODS:After culture and proliferation of the Mel-Rm cell line, cell toxicity and the suitable cell incubation time of the conjugate were determined....
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2013.03.010
更新日期：2013-12-01 00:00:00
abstract：:Port wine stain (PWS) birthmarks are congenital vascular malformations characterized by ectatic capillaries in the papillary layer of the dermis. They usually appear at birth and tend to become darker and thicker with age. Cosmetic and pathological changes can cause great depression in all ages. Laser-mediated selecti...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章,评审
doi：10.1016/j.pdpdt.2009.08.001
更新日期：2009-09-01 00:00:00
abstract：BACKGROUND:Epithelial non-melanoma skin cancer (NMSC) like actinic keratosis (AK), Bowen's disease (BD) and basal cell carcinoma (BCC) represent the most common malignancies in the fair skinned population. Epidemiological data reveal high incidences, especially for actinic keratoses, which are basically non-invasive sq...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章,评审
doi：10.1016/j.pdpdt.2009.12.004
更新日期：2010-03-01 00:00:00
abstract：BACKGROUND:Photodynamic therapy (PDT) is a technique that uses light and a photosensitizer, converting local molecular oxygen into singlet oxygen, which eliminates a target unhealthy tissue. It has been increasingly used for the treatment of several diseases including skin disorders. Psoriasis is a chronic inflammatory...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2015.05.003
更新日期：2015-09-01 00:00:00
abstract：PURPOSE:To investigate the clinical application of 5-aminolevulinic acid (ALA) assisted fluorescence cystoscopy for early detection of bladder carcinoma and completely transurethral resection. METHOD:ALA-assisted fluorescence cystoscopy was performed on 51 cases of anodynia haematuria. Fluorescence cystoscopy was perf...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2006.12.001
更新日期：2007-03-01 00:00:00
abstract：PURPOSE:Early diagnosis of tooth enamel demineralization, and dentin caries lesions, present a valuable solution to avoid or decrease their deleterious effect. The aim of this study was to design a simple, effective, and non-invasive technique, employing a novel laser wavelength to classify and differentiate between va...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2018.11.017
更新日期：2019-03-01 00:00:00
abstract：:Photodynamic therapy (PDT) is a relatively safe way for disease diagnosis and treatment that is based on light and photosensitizers. LS-HB is a promising photosensitizer with a light absorption peak of 660 nm. AIMS:The present study aimed to investigate the anticancer effects of LS-HB-PDT on hepatocellular carcinoma ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2020.101718
更新日期：2020-06-01 00:00:00
abstract：BACKGROUND:5-aminolevulinic acid photodynamic therapy (ALA-PDT) is not only the first-line treatment for actinic keratosis (AK), but also demonstrated to improve photoaging during AK field treatment. However, its long-term improvement effect on photoaging remains elusive. OBJECTIVE:To evaluate the long-term improvemen...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2021.102181
更新日期：2021-01-08 00:00:00
abstract：BACKGROUND:Erosive oral lichen planus (EOLP) poses a substantial risk of malignant transformation into squamous cell cancer. The absence of established treatment gives way to alternative therapeutic strategies, including photodynamic therapy. The aim of the study was to evaluate the efficacy of PDT in the treatment of ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2017.01.178
更新日期：2017-06-01 00:00:00
abstract：:We report a case of idiopathic paracentral acute middle maculopathy with typical optical imaging and clinical features. A 26-year-old Chinese policeman presented with a 20-day history of paracentral scotoma in the left eye after early wake-up and long-time working in front of computer the day before. He experienced su...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2017.07.004
更新日期：2017-09-01 00:00:00
abstract：BACKGROUND:Microorganisms treated by photo-activated disinfection (PAD) in combined periodontal-endodontic (perio-endo) lesions would be exposed to sub-lethal doses of PAD (sPAD). This study evaluated the effect of sPAD using toluidine blue O (TBO) in combination with diode laser irradiation on the growth and biofilm-f...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2016.08.013
更新日期：2016-12-01 00:00:00
abstract：:Vibrio parahaemolyticus (V. parahaemolyticus) is currently a major cause of bacterial diarrhoea associated with seafood consumption. The objective of this study was to determine the inactivation effect of curcumin-mediated photodynamic action on V. parahaemolyticus. First of all, V. parahaemolyticus suspended in PBS b...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2016.05.004
更新日期：2016-09-01 00:00:00
abstract：:Photodynamic therapy (PDT) is a promising modality for the treatment of cancer. PDT involves administering a photosensitizing dye, i.e. photosensitizer, that selectively accumulates in tumors, and shining a light source on the lesion with a wavelength matching the absorption spectrum of the photosensitizer, that exert...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章,评审
doi：10.1016/j.pdpdt.2019.04.033
更新日期：2019-06-01 00:00:00
abstract：AIM:To investigate the effects of ALA-PDT on biofilm structure, virulence factor secretion, and quorum sensing (QS) in Pseudomonas aeruginosa. MATERIALS AND METHODS:We used confocal laser scanning microscopy (CLSM), an XTT assay, scanning electron microscopy (SEM), a virulence factor assay and qRT-PCR in this study. ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2018.07.005
更新日期：2018-12-01 00:00:00
abstract：BACKGROUND:This paper provides the results of the non-clinical evaluation of biodistribution of the PS Photolon in inner organs and tissues of intact and tumor-bearing rats with xenograft tumors of different morphologic types. METHODS:The accumulation studies were performed in rats by means of intravital laser fluorim...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2009.04.002
更新日期：2009-06-01 00:00:00
abstract：:In the present study, the in vitro susceptibilities of five Candida spp. to photodynamic antimicrobial chemotherapy (PACT) with four phenothiazinium derivatives, methylene blue (MB), new methylene blue N (NMBN), toluidine blue O (TBO) and the novel pentacyclic phenothiazinium photosensitiser S137, in combination with ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2012.11.004
更新日期：2013-05-01 00:00:00
abstract：INTRODUCTION:Conventional photodynamic therapy (cPDT) is considered a very effective treatment of actinic keratosis (AK) lesions. However, its use is limited by the fact that this procedure could be very painful. The use of topical anesthetics such as tetracaine or lignocaine/prilocaine has shown disappointing results ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2020.101758
更新日期：2020-06-01 00:00:00
abstract：BACKGROUND:Photodynamic therapy has apart from a direct cytotoxic effect also immunomodulatory properties. The aim of our study was to investigate how photodynamic therapy with 5-aminolevulinic acid (ALA-PDT) in sublethal doses influences the secretion of interleukins 6, 8 and 10 from colon cancer cells in vitro. METH...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2018.02.021
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVES:To investigate the effects of low-dose aminolevulinic acid photodynamic therapy (ALA-PDT) on photoaging in human dermal fibroblasts (HDFs) and to explore the mechanism of Nuclear factor erythroid 2-related factor 2(Nrf2)-mediated photorejuvenation in vitro. METHODS:A photoaging model was established through...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章
doi：10.1016/j.pdpdt.2019.05.006
更新日期：2019-09-01 00:00:00
abstract：:Photodynamic therapy (PDT) is based on the dye-sensitized photooxidation of biological matter in the target tissue, and utilizes light activated drugs for the treatment of a wide variety of malignancies. Quinones and porphyrins moiety are available naturally and involved in the biological process. Quinone metabolites ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章,评审
doi：10.1016/j.pdpdt.2015.07.177
更新日期：2016-03-01 00:00:00
abstract：:Medication-related osteonecrosis of the jaw (MRONJ) results in progressive destruction of the jawbones, and advanced cases demand surgical intervention. The total removal of necrotic bone is required to prevent recurrence and infection. However, determining the limits between necrotic and healthy bone is a challenge. ...
journal_title：Photodiagnosis and photodynamic therapy
pub_type： 杂志文章,评审
doi：10.1016/j.pdpdt.2020.102003
更新日期：2020-12-01 00:00:00
