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https://www.readbyqxmd.com/read/29150040/management-of-malignant-lung-entrapment-the-oncothorax
#1
REVIEW
Roman Petrov, Charles Bakhos, Abbas E Abbas
Pleural metastasis is a common occurrence in up to 30% of patients with metastatic cancer. When lung entrapment and loculation of fluid occur, treatment is more difficult and we have named this condition "oncothorax." The malignant adhesions that entrap the lung in an oncothorax are not typically amenable to surgical decortication. The standard approach for managing these patients is to place an indwelling catheter. Other options may include pleurectomy and decortication, intrapleural hyperthermic chemoperfusion, and intrapleural photodynamic therapy...
February 2018: Thoracic Surgery Clinics
https://www.readbyqxmd.com/read/29147483/sonophotodynamic-therapy-mediated-by-liposomal-zinc-phthalocyanine-in-a-colon-carcinoma-tumor-model-role-of-irradiating-arrangement
#2
Maryam Bakhshizadeh, Toktam Moshirian, Habibollah Esmaily, Omid Rajabi, Hooriyeh Nassirli, Ameneh Sazgarnia
Objectives: Low penetration depth of light is the main defect of photodynamic therapy (PDT), which could be improved by sonodynamic therapy (SDT). In this study, a combination of PDT and SDT known as sonophotodynamic therapy (SPDT) was investigated using two reverse arrangements in CT26 tumor model. Materials and Methods: The liposomal zinc phthalocyanine was synthesized and characterized. It was then administered to CT26 tumor models as a sensitizer. The animal models were subjected to PDT, SDT, and the combined treatment in different groups...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29146972/specific-targeting-of-melanotic-cells-with-peptide-ligated-photosensitizers-for-photodynamic-therapy
#3
Paul Lorenz Bigliardi, Bhimsen Rout, Aakanksha Pant, Viknish Krishnan-Kutty, Alex N Eberle, Ramasamy Srinivas, Brendan Adrian Burkett, Mei Bigliardi-Qi
A strategy combining covalent conjugation of photosensitizers to a peptide ligand directed to the melanocortin 1 (MC1) receptor with the application of sequential LED light dosage at near-IR wavelengths was developed to achieve specific cytotoxicity to melanocytes and melanoma (MEL) with minimal collateral damage to surrounding cells such as keratinocytes (KER). The specific killing of melanotic cells by targeted photodynamic therapy (PDT) described in this study holds promise as a potentially effective adjuvant therapeutic method to control benign skin hyperpigmentation or superficial melanotic malignancy such as Lentigo Maligna Melanoma (LMM)...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29145577/photodynamic-therapy-leads-to-time-dependent-regression-of-pathologic-corneal-lymph-angiogenesis-and-promotes-high-risk-corneal-allograft-survival
#4
Yanhong Hou, Viet Nhat Hung Le, Thomas Clahsen, Ann-Charlott Schneider, Felix Bock, Claus Cursiefen
Purpose: Pathologic corneal (lymph) angiogenesis is a known risk factor for immune-mediated allograft rejections after corneal transplantation. However, there is no established treatment to regress pre-existing pathological corneal blood and lymphatic vessels. This study assessed the possibility to regress both vessel types by photodynamic therapy (PDT) after intravenous (i.v.) verteporfin injection, the influence of timing of PDT after verteporfin injection, and the effect on graft survival in high-risk keratoplasty...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29145431/effects-of-periodontitis-on-the-development-of-asthma-the-role-of-photodynamic-therapy
#5
Larissa Carbonera Candeo, Nicole Cristine Rigonato-Oliveira, Aurileia Aparecida Brito, Rodrigo Labat Marcos, Cristiane Miranda França, Kristianne Porta Santos Fernandes, Raquel Agnelli Mesquita-Ferrari, Sandra Kalil Bussadori, Rodolfo Paula Vieira, Adriana Lino-Dos-Santos-Franco, Ana Paula Ligeiro-Oliveira, Anna Carolina Ratto Tempestini Horliana
To evaluate whether periodontitis modulates lung inflammation in an experimental model of asthma as well as the photodynamic therapy (PDT) is associated with a reduction of lung inflammation. Seventy-two BALB/c male mice (~2 months) were randomly divided into 8 groups (n = 9): Basal, Periodontitis (P), P+PT, P+PT+PDT, Asthma (A), A+P, A+P+PT, and A+P+PT+PDT. Periodontitis was induced by using the ligature technique and asthma was induced by ovalbumin (OVA). PT was performed with curettes and PDT with methylene blue (0...
2017: PloS One
https://www.readbyqxmd.com/read/29145103/gold-chlorophyll-a-hybrid-nanoparticles-and-chlorophyll-a-cetyltrimethylammonium-chloride-self-assembled-suprastructures-as-novel-carriers-for-chlorophyll-a-delivery-in-water-medium-photoactivity-and-photostability
#6
Vito Rizzi, Davide Vurro, Tiziana Placido, Paola Fini, Andrea Petrella, Paola Semeraro, Pinalysa Cosma
The stability of Chlorophyll a in water during prolonged exposure, at room temperature, to a neon lamp has been investigated by means of UV-vis and fluorescence spectroscopies. In addition, the Chlorophyll a (photo)stability evaluation in presence of suitable carriers has been performed in order to investigate its reactivity under the same conditions, for possible and future applications in Antimicrobial Photodynamic Therapy. Cetyltrimethylammonium chloride was chosen to solubilize Chlorophyll a in water. While, cetyltrimethylammonium chloride-capped gold nanoparticles offer a great opportunity because combine the Chlorophyll a action, used as a photosensitizer in Antimicrobial Photodynamic Therapy, with gold nanoparticles effect used in photothermal therapy...
November 9, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29144506/soluble-p-selectin-promotes-retinal-ganglion-cell-survival-through-activation-of-nrf2-signaling-after-ischemia-injury
#7
Kishan Kapupara, Yao-Tseng Wen, Rong-Kung Tsai, Shun-Ping Huang
Retinal ischemic injuries play an important role in the pathogenesis of several eye disorders. Inflammation and oxidative stress are key players in ischemic injuries. Following retinal ischemia, vascular endothelial cells and leukocytes express several inflammatory adhesion receptors, such as selectins and cell adhesion molecules. P-selectin stimulates leukocyte recruitment to platelet aggregates and has an important role in vascular homeostasis and inflammatory leukocyte extravasation. Soluble P-selectin can be neuroprotective through competitive binding to the receptors of endogenous P-selectin molecules...
November 16, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29143339/cell-death-pathways-associated-with-photodynamic-therapy-an-update
#8
David Kessel, Nancy L Oleinick
Photodynamic therapy (PDT) has the potential to make a significant impact on cancer treatment. PDT can sensitize malignant tissues to light, leading to a highly selective effect if an appropriate light dose can be delivered. Variations in light distribution and drug delivery, along with impaired efficacy in hypoxic regions, can reduce the overall tumor response. There is also evidence that malignant cells surviving PDT may become more aggressive than the initial tumor population. Promotion of more effective direct tumor eradication is therefore an important goal...
November 16, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29143338/extracellular-matrix-containing-in-vitro-three-dimensional-tumour-models-in-photodynamic-therapy-related-research
#9
Beata Čunderlíková
Three-dimensional (3D) tumour models have been intensively evaluated for their use in cancer research and there is a strong rationale behind using 3D cell cultures in photodynamic therapy (PDT)-related experimentation. In this contribution, it is explained why 3D cell cultures containing extracellular matrix (ECM) are preferred for this purpose. Results of experimental studies utilizing ECM-containing 3D cellular models in PDT research are summarized. Finally, design of in vitro 3D models that would provide clinically relevant information is discussed...
November 16, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29142997/advanced-smart-photosensitizers-for-more-effective-cancer-treatment
#10
Wooram Park, Soojeong Cho, Jieun Han, Heejun Shin, Kun Na, Byeongdu Lee, Dong-Hyun Kim
Photodynamic therapy (PDT) based upon the use of light and photosensitizers (PSs) has been used as a novel treatment approach for a variety of tumors. It, however, has several major limitations in the clinic: poor water solubility, long-term phototoxicity, low tumor targeting efficacy, and limited light penetration. With advances in nanotechnology, materials science, and clinical interventional imaging procedures, various smart-PSs have been developed for improving their cancer-therapeutic efficacy while reducing the adverse effects...
November 16, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/29142604/klotho-expression-is-correlated-to-molecules-associated-with-epithelial-mesenchymal-transition-in-lung-squamous-cell-carcinoma
#11
Takayuki Ibi, Jitsuo Usuda, Tatsuya Inoue, Akira Sato, Kyoshiro Takegahara
Klotho is known as an anti-aging gene. We previously reported that the expression of Klotho is a postoperative prognostic factor for patients with lung large cell neuroendocrine carcinoma and lung small cell carcinoma. Recently, Klotho was shown to suppress the epithelial-mesenchymal transition (EMT). In the present study, we examined the association between the expression of Klotho and the regulation of EMT in lung squamous cell carcinoma. We immunohistochemically examined the expression of Klotho in patients with lung squamous cell carcinoma who had undergone surgical resection or photodynamic therapy...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29141833/comparative-study-of-the-clinical-histological-and-biological-characteristics-of-squamous-cell-carcinomas-in-areas-previously-treated-with-photodynamic-therapy
#12
Tamara Gracia Cazaña, Nerea Salazar, Jesús Vera-Álvarez, Salvador González, Angeles Juarranz, Yolanda Gilaberte
Although photodynamic therapy (PDT) is an effective treatment option for non-melanoma skin cancer, the development of aggressive tumours in PDT-treated areas has been described. To evaluate the clinical, histological, and biological characteristics of squamous cell carcinomas (SCCs) in areas previously treated with PDT vs those arising in areas never treated with this therapeutic modality. A retrospective observational study was designed. We collected all cases of invasive SCCs in areas previously treated with PDT...
November 15, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/29141147/a-water-soluble-galactose-decorated-cationic-photodynamic-therapy-agent-based-on-bodipy-to-selectively-eliminate-biofilm
#13
Xiaomei Dai, Xuelei Chen, Yu Zhao, Yunjian Yu, Xiaosong Wei, Xinge Zhang, Chaoxing Li
A multitude of serious chronic infections involved in bacterial biofilms that are difficult to eradicate. Here, a water-soluble galactose functionalized cationic 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)-based photodynamic therapy agent was synthesized for selectively eliminating the bacterial biofilm. These conjugates can capture bacteria to form aggregations through electrostatic interaction and then generate a large number of reactive oxygen species (ROS) under visible light irradiation to kill the bacteria without the emergence of bacterial resistance...
November 15, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29140069/dual-functions-of-cyclometalated-iridium-iii-complexes-anti-metastasis-and-lysosome-damaged-photodynamic-therapy
#14
Fang-Xin Wang, Mu-He Chen, Yan-Nan Lin, Hang Zhang, Cai-Ping Tan, Liang-Nian Ji, Zongwan Mao
Four phosphorescent cyclometalated iridium(III) complexes containing benzimidazole moiety have been designed and synthesized. These Ir(III) complexes can inhibit several cancerous processes including cell migration, invasion, colony formation and angiogenesis effectively. Interestingly, they show much higher singlet oxygen quantum yield in acidic solution than in neutral solution. Upon irradiation at 425 nm with low energy (1.2 J·cm(-2)), they can induce apoptosis through lysosomal damage, evaluation of ROS level and activation of caspase-3/7...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29139000/effect-of-light-polarization-on-the-efficiency-of-photodynamic-therapy-of-basal-cell-carcinomas-an-in-vitro-cellular-study
#15
M JalalKamali, S N Nematollahi-Mahani, M Shojaei, A Shamsoddini, N Arabpour
In an in vitro study, the effect of light polarization on the efficiency of 5-aminolaevulinic acid (ALA) photodynamic therapy (PDT) of basal cell carcinoma (BCC) was investigated. Three states of light polarization (non-polarized, linearly polarized, and circularly polarized) were considered. Cells were exposed to green (532 pm 20 nm) irradiation from light emitting diodes. Cell survival was measured by the colorimetric assay (WST-1) and Trypan blue staining. The colorimetric assay showed a pronounced decrease in the cell viability (up to 30%) using polarized light compared to the non-polarized one in the wavelength region used...
November 15, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29138772/mesoporous-silica-nanoparticles-incorporating-squaraine-based-photosensitizers-a-combined-experimental-and-computational-approach
#16
Ivana Miletto, Alberto Fraccarollo, Nadia Barbero, Claudia Barolo, Maurizio Cossi, Leonardo Marchese, Enrica Gianotti
Squaraine dyes, that exhibit intense absorption in the red/near infrared region, have been successfully introduced into mesoporous silica nanoparticles (MSNs) to obtain a nanoplatform for photodynamic therapy. Three brominated squaraine dyes which exhibited good PS performance in solution but a different behaviour in vitro due to cell permeability issues were used as photosensitizers. The effects of the adsorption within the pores of MSNs on the overall UV-Vis-NIR absorption and emission properties as well as on the PS performance was evaluated via a combined experimental and computational physico-chemical approach, which allowed us to correlate the unusual optical properties of two out of three systems with the dimerization of squaraines on the silica surface, with detrimental effects on the PS performance...
November 15, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29138062/topical-calcipotriol-prior-to-ablative-fractional-laser-assisted-photodynamic-therapy-enhances-treatment-outcomes-for-actinic-keratosis-in-fitzpatrick-grades-iii-v-skin-a-prospective-randomized-clinical-trial
#17
Jeong-Wan Seo, Ki-Hoon Song
No abstract text is available yet for this article.
November 11, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29136584/unprecedented-chemosensing-behavior-of-novel-tetra-substituted-benzimidazole-zinc-ii-phthalocynine-for-selective-detection-of-bi-3-ion-synthesis-characterization-and-ros-generation
#18
Azeem Ullah, Faheem Shah, Imran Khan, Muhammad Anwar, Kiramat Shah, Munira Taj Muhammad, Farid Ahmad
In this work, synthesis of novel symmetrical 4-(2-bromo-4-(5-bromo-1H-benzo[d] imidazol-2-yl) phenoxy) tetra substituted zinc phthalocyanine has been reported. The novel benzimidazole zinc phthlocynine compound (3) has been characterized by MALDI-TOF MS, FT-IR, UV-vis, and (1)H NMR spectroscopy. This new compound 3 displayed excellent selectivity towards Bi(3+) ion in the presence of other competitive ions including Ca(2+), Cd(2+), Co(2+) Cu(2+), Fe(3+), Hg(2+), Sn(2+), Mg(2+), Na(+), Ni(2+) and Pb(2+) respectively...
November 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29136341/photodynamic-therapy-and-nuclear-imaging-activities-of-zinc-phthalocyanine-integrated-tio2-nanoparticles-in-breast-and-cervical-tumors
#19
Fatma Yurt, Kasim Ocakoglu, Mine Ince, Suleyman Gokhan Colak, Ozge Er, Hale Melis Soylu, Cumhur Gunduz, Cıgır Biray Avci, Cansu Caliskan Kurt
In recent years, phthalocyanines (Pcs) have been widely used as photosensitizer in photodynamic therapy applications. Because of their strong absorptions in the near-infrared region (640-700 nm). The integration of phthalocyanine derivatives to a nanoparticle is expected to be efficient way to improve the activity of the photosensitizer on the targeted tissue. It is known that the integrated molecules not only show better accumulation on tumor tissue but also reduce toxicity in healthy tissues. In this study, the ZnPc molecule was synthesized and integrated to the TiO2 nanoparticle, to investigate the potential of PDT and its cytotoxicity...
November 14, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/29136306/patient-and-physician-satisfaction-in-an-observational-study-with-methyl-aminolevulinate-daylight-photodynamic-therapy-in-the-treatment-of-multiple-actinic-keratoses-of-the-face-and-scalp-in-6-european-countries
#20
M C Fargnoli, S H Ibbotson, R E Hunger, G Rostain, M T W Gaastra, L Eibenschutz, C Cantisani, A W Venema, S Medina, N Kerrouche, B Pérez-Garcia
BACKGROUND: Guidelines recommend treating actinic keratoses (AK) as they are recognized as precursors of invasive squamous cell carcinoma. OBJECTIVE: The objective of this study was to collect real-world clinical data on the use of methyl aminolevulinate daylight-photodynamic therapy (MAL DL-PDT) for the treatment of face and scalp AK in Europe. METHODS: A prospective, multicenter, non-interventional study was conducted in 6 European countries in patients receiving a single treatment of MAL DL-PDT for face and/or scalp AK...
November 14, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
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