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https://www.readbyqxmd.com/read/29778525/mucus-penetrating-nanoparticles-promising-drug-delivery-systems-for-the-photodynamic-therapy-of-intestinal-cancer
#1
Juliane Anderski, Laura Mahlert, Dennis Mulac, Klaus Langer
Photodynamic therapy (PDT) is an auspicious therapy approach for the treatment of cancer. Despite its numerous benefits, the drug delivery of the used photosensitizer (PS) to target locations inside the human body remains a main therapy challenge, since the standard intravenous PS injection often causes systemic side-effects. To circumvent this therapy drawback, the oral application represents a promising administration alternative. Especially for the treatment of intestinal cancer it offers the possibility of a local treatment with a reduced likelihood for adverse drug reactions...
May 17, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29777951/experimental-referred-pain-extends-towards-previously-injured-location-an-explorative-study
#2
Thorvaldur Skuli Palsson, Shellie A Boudreau, Hans Jørgen Krebs, Thomas Graven-Nielsen
Facilitated pain mechanisms have been demonstrated in musculoskeletal pain but it is unclear whether a recent painful injury leaves the pain system sensitized. Pain characteristics were assessed in individuals who recently recovered from ankle pain (recovered pain group; n=25) and sex-matched controls (n=25) in response to tonic-pressure pain and saline-induced pain applied at the shin muscle. Pain intensity and pain referral patterns were recorded bilaterally after the painful muscle stimulus. Pressure pain thresholds (PPTs) were measured at the lower legs and shoulder...
May 16, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29776672/half-dose-photodynamic-therapy-versus-high-density-subthreshold-micropulse-laser-treatment-in-patients-with-chronic-central-serous-chorioretinopathy-the-place-trial
#3
Elon H C van Dijk, Sascha Fauser, Myrte B Breukink, Rocio Blanco-Garavito, Joannes M M Groenewoud, Jan E E Keunen, Petrus J H Peters, Greet Dijkman, Eric H Souied, Robert E MacLaren, Giuseppe Querques, Susan M Downes, Carel B Hoyng, Camiel J F Boon
PURPOSE: To compare the anatomic and functional efficacy and safety of half-dose photodynamic therapy (PDT) versus high-density subthreshold micropulse laser (HSML) treatment in patients with chronic central serous chorioretinopathy (cCSC). DESIGN: Open-label, multicenter, randomized controlled clinical trial. PARTICIPANTS: Patients with cCSC whose disease had to be confirmed by both clinical characteristics and findings on multimodal imaging...
May 15, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29775015/-the-safety-study-of-percutaneous-dilational-tracheostomy-in-a-large-sample
#4
X Zhai, J L Zhang, J C He, G Liu
Objective: The aim of this study is to analyze the safety of a large number cases of percutaneous dilatation tracheostomy. Method: Retrospective analyzed the clinical data of PDT (1 200 cases) and TT (326 cases) patients which were recruited. The postoperative complications were analyzed statistically. PDT and TT randomized controlled trials (PDT and TT) were conducted with 80 cases in each group. The intraoperative conditions (including operative time, intraoperative bleeding volume and incision size) and postoperative complications in the two groups were statistically analyzed...
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29774871/-progression-of-basic-research-clinical-application-of-photodynamic-therapy-and-fluorescence-guided-surgery-in-glioma-treatment
#5
Xuegang Li, Hua Feng, Fei Li
The prognosis of glioma remains poor because of the infiltrative nature and the high local relapse rate. The current goals for patients with gliomas is maximal safe resection and adjuvant therapy. Tumor-specific photosensitizer, such as hematoporphyrin derivative (HpD) 5-aminolevulinic acid (5-ALA), can be selective up-taken and accumulated in tumor tissue. Light with appropriate wavelength can penetrate tumor tissue and excite the photosensitizer. The excited photosensitizer within glioma cells permits fluorescence visualization of tumor tissue during surgery and has been introduced in treatment of glioma as fluorescence-guided surgery (FGS)...
April 28, 2018: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29771775/photodynamic-therapy-for-bronchial-microscopic-residual-disease-after-resection-in-lung-cancer
#6
Hiren J Mehta, Abhishek Biswas, Sebastian Fernandez-Bussy, Mauricio Pipkin, Tiago Machuca, Michael A Jantz
BACKGROUND: The goal of lung cancer surgery is a complete tumor resection (R0 resection) with clear margins. 4% to 5% of resections have microscopic residual disease associated with worse prognosis. Definitive management is resection of residual tumor, which may not be tolerated by many patients, and definitive management is not well studied in these patients. We treated patients with stage I cancer and bronchial mucosal residual disease (MRD) with bronchoscopic photodynamic therapy (PDT)...
May 16, 2018: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/29771486/phosphorescent-starburst-pt-ii-porphyrins-as-bifunctional-therapeutic-agents-for-tumor-hypoxia-imaging-and-photodynamic-therapy
#7
Zhuang Lv, Liang Zou, Huanjie Wei, Shujuan Liu, Wei Huang, Qiang Zhao
It is very meaningful to develop bifunctional therapeutic agents which can monitor the tumor hypoxia in real time as well as maintain good photodynamic therapy (PDT) effect under hypoxia. To achieve it, herein, a series of hydrophilic phosphorescent starburst Pt(II) porphyrins as bifunctional therapeutic agents for simultaneous tumor hypoxia imaging and highly efficient PDT have been rationally designed and synthesized. They have been obtained by using Pt(II) porphyrins as the functional core and cationic oligofluorenes as the arms...
May 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29768269/long-term-results-of-combination-treatment-with-single-dose-ranibizumab-plus-photodynamic-therapy-for-retinal-angiomatous-proliferation
#8
Panagiotis Malamos, Ioannis Tservakis, Menelaos Kanakis, Chrysoula Koutsiouki, Evita Kiskira, Georgios Mylonas, John Lakoumentas, Ilias Georgalas
PURPOSE: To present functional and anatomic outcomes of combination therapy with ranibizumab and photodynamic therapy (PDT) in a series of retinal angiomatous proliferation (RAP) cases. METHODS: A total of 17 eyes of 17 patients with RAP were included. Thirteen eyes were treatment naïve and 4 were already on ranibizumab monotherapy. Combined treatment with single-dose ranibizumab and PDT was performed on all treatment-naïve cases. Follow-up was performed every month for 6-38 months, using optical coherence tomography and indocyanine green angiography when necessary...
May 16, 2018: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/29767317/successful-sequential-treatment-with-itraconazole-and-ala-pdt-for-cutaneous-granuloma-by-candida-albicans-a-case-report-and-literature-review
#9
Qing Cai, Lian-Juan Yang, Jia Chen, Hong Yang, Zhi-Qin Gao, Xiu-Li Wang
Photodynamic therapy (PDT) is a process that combines a photosensitizing drug and light and promotes phototoxic responses in target cells, mainly via oxidative damage. Antifungal photodynamic therapy has been successfully employed against Candida species, dermatophytes, and deep mycoses. We present a case of a cutaneous granuloma caused by C. albicans treated with 5-aminolevulinic acid (ALA)-PDT. A 64-year-old man presented with two plaques on his right hand and wrist for 2 years. The diagnosis was made based on histopathology, mycology, and molecular identification of paraffin-embedded tissues...
May 16, 2018: Mycopathologia
https://www.readbyqxmd.com/read/29767247/comparison-of-the-synergistic-anticancer-activity-of-alpcs4-photodynamic-therapy-in-combination-with-different-low%C3%A2-dose-chemotherapeutic-agents-on-gastric-cancer-cells
#10
Jing Xin, Senhao Wang, Luwei Zhang, Bo Xin, Yulu He, Jing Wang, Sijia Wang, Lijian Shen, Zhenxi Zhang, Cuiping Yao
Limited cellular delivery and internalization efficiency of Al(III) phthalocyanine chloride tetrasulfonic acid (AlPcS4) induce poor penetration ability in cells and a slight photodynamic therapy (PDT) effect on gastric cancer. The combination treatment of AlPcS4/PDT with low‑dose chemotherapeutic agents may provide a promising treatment strategy to increase the weak delivery efficiency of AlPcS4, reducing the dose of chemical agents without reducing efficacy, and improving apoptosis‑inducing abilities, thereby increasing the antitumor effects and decreasing the noxious side effects on gastric cancer...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29765343/questionnaire-based-maladaptive-decision-coping-patterns-involved-in-binge-eating-among-1013-college-students
#11
Wan-Sen Yan, Ran-Ran Zhang, Yan Lan, Zhi-Ming Li, Yong-Hui Li
Binge Eating Disorder (BED), considered a public health problem because of its impact on psychiatric, physical, and social functioning, merits much attention given its elevation to an independent diagnosis in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). Similar with substance use disorders, some neuropsychological and personality constructs are potentially implicated in the onset and development of BED, in which poor decision-making has been suggested to facilitate overeating and BED...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29763739/antimicrobial-effect-of-the-photodynamic-therapy-using-erythrosine-methylene-blue-combination-on-streptococcus-mutans-biofilm
#12
Laíse Midori Tokubo, Pedro Luiz Rosalen, Janaina de Cássia Orlandi Sardi, Irlan Almeida Freires, Mitsue Fujimaki, Josely Emiko Umeda, Patricia Magalhães Barbosa, Gabriela Ortolan Tecchio, Noboru Hioka, Camila Fabiano de Freitas, Raquel Sano Suga Terada
BACKGROUND: Photodynamic therapy (PDT) has demonstrated promising results in the treatment of several clinical pathologies through the photochemical reaction caused by the combination of a photosensitizer and a light source. The objective of this study was to evaluate the antimicrobial effect of the combination of the photosensitizers (PSs) erythrosine/methylene blue activated by a white halogen light device on Streptococcus mutans biofilm. METHODS: Two separate experiments were conducted, the first using the PSs at the concentration of 100 μM, and the second 250 μM...
May 12, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29763715/near-infrared-light-activated-red-emitting-upconverting-nanoplatform-for-t-1-weighted-magnetic-resonance-imaging-and-photodynamic-therapy
#13
Xiang-Long Tang, Jun Wu, Ben-Lan Lin, Sheng Cui, Hong-Mei Liu, Ru-Tong Yu, Xiao-Dong Shen, Ting-Wei Wang, Wei Xia
Photodynamic therapy (PDT) has increasingly become an efficient and attractive cancer treatment modality based on reactive oxygen species (ROS) that can induce tumor death after irradiation with ultraviolet or visible light. Herein, to overcome the limited tissue penetration in traditional PDT, a novel near-infrared (NIR) light-activated NaScF4 : 40% Yb, 2% Er@CaF2 upconversion nanoparticle (rUCNP) is successfully designed and synthesized. Chlorin e6, a photosensitizer and a chelating agent for Mn2+ , is loaded into human serum albumin (HSA) that further conjugates onto rUCNPs...
May 12, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29763568/near-infrared-activatable-phthalocyanine-poly-l-glutamic-acid-conjugate-enhanced-in-vivo-safety-and-antitumor-efficacy-towards-an-effective-photodynamic-cancer-therapy
#14
Hoay Yan Cheah, Elena Gallon, Fabienne Dumoulin, See Ziau Hoe, Nina Japundžić-Žigon, Sofija Glumac, Hong Boon Lee, Prem Anand, Lip Yong Chung, Maria Jesus Vicent, Lik Voon Kiew
We previously developed a new zinc (II) phthalocyanine (ZnPc) derivative (Pc 1) conjugated to poly-L-glutamic acid (PGA) (1-PG) to address the limitations of ZnPc as part of an antitumor photodynamic therapy approach, which include hydrophobicity, phototoxicity and non-selectivity in biodistribution and tumor targeting. During this study, we discovered that 1-PG possessed high near infrared (NIR) light absorptivity (λmax = 675 nm), good singlet oxygen generation efficiency in an aqueous environment, and enhanced photocytotoxic efficacy and cancer cell uptake in vitro...
May 15, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29762622/charge-switchable-nanocapsules-with-multistage-ph-responsive-behaviours-for-enhanced-tumour-targeted-chemo-photodynamic-therapy-guided-by-nir-mr-imaging
#15
Jia Zhou, Tianliang Li, Chunlei Zhang, Junyuan Xiao, Daxiang Cui, Yingsheng Cheng
Multifunctional nanoplatforms have been developed into advanced drug delivery systems for cancer therapy. In this study, we report a charge-switchable nanocapsule with multistage pH-responsive behaviors. First, DOX-encapsulated and oleylamine-embedded hollow structures with a diameter of 132 ± 21 nm are prepared via the double emulsion method. Subsequently, the hollow structures are encompassed by Gd-DTPA-, chlorin e6 (Ce6)-, and folate (FA)-modified BSA to form tumour-targeted, dual NIR/MR imaging-guided and chemo-photodynamic therapeutic nanoplatforms...
May 15, 2018: Nanoscale
https://www.readbyqxmd.com/read/29760069/heterometallic-ru-pt-metallacycle-for-two-photon-photodynamic-therapy
#16
Zhixuan Zhou, Jiangping Liu, Thomas W Rees, Heng Wang, Xiaopeng Li, Hui Chao, Peter J Stang
As an effective and noninvasive treatment of various diseases, photodynamic therapy (PTD) relies on the combination of light, a photosensitizer, and oxygen to generate cytotoxic reactive oxygen species that can damage malignant tissue. Much attention has been paid to covalent modifications of the photosensitizers to improve their photophysical properties and to optimize the pathway of the photosensitizers interacting with cells within the target tissue. Herein we report the design and synthesis of a supramolecular heterometallic Ru-Pt metallacycle via coordination-driven self-assembly...
May 14, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29758547/ultrasound-assisted-gene-and-photodynamic-synergistic-therapy-with-multifunctional-foxa1-sirna-loaded-porphyrin-microbubbles-for-enhancing-therapeutic-efficacy-for-breast-cancer
#17
Ranran Zhao, Xiaolong Liang, Bo Zhao, Min Chen, Renfa Liu, Sujuan Sun, Xiuli Yue, Shumin Wang
To improve the non-invasive therapeutic efficacy for ER positive breast cancer (ER+ BC), we fabricated a multifunctional FOXA1 loaded porphyrin microbubble to combine photodynamic therapy (PDT) and gene therapy of FOXA1 knockdown (KD) with ultrasound targeted microbubble destruction (UTMD) technology under the guidance of contrast enhanced ultrasound (CEUS). Cationic porphyrin microbubbles (CpMBs) were firstly fabricated from a porphyrin grafted lipid with two cationic amino groups (PGL-NH2) and fluorocarbon inert gas of C3 F8 ...
May 3, 2018: Biomaterials
https://www.readbyqxmd.com/read/29756653/the-effect-of-photodynamic-therapy-on-pathogenic-bacteria-around-peri-implant-sulcus-and-in-the-cavity-between-abutment-and-implant-after-healing-phase-a-prospective-clinical-study
#18
Lin-Yi Zhou, Jun-Yu Shi, Yu Zhu, Shu-Jiao Qian, Hong-Chang Lai, Ying-Xin Gu
OBJECTIVES: To compare levels of pathogens from peri-implant sulcus versus abutment screw cavities after photodynamic therapy. MATERIAL AND METHODS: Twenty patients were included. Photodynamic therapy (PDT) was applied both in sulcus and cavities after sampling following suprastructures loading, and repeated after 2 weeks. Two samples each containing four paper points were collected for each implant at baseline, 2 weeks, 3 months: (i) peri-implant sulcus and (ii) abutment screw cavities...
May 14, 2018: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29753305/a-prospective-randomised-within-subject-study-of-ala-pdt-for-actinic-keratoses-using-different-irradiation-regimes
#19
O Zaar, A Sjöholm Hylén, M Gillstedt, J Paoli
BACKGROUND: Photodynamic therapy (PDT) can be used to treat large fields of actinic keratoses (AKs) with high clearance rates. A notable downside is the amount of pain that accompany the treatment. This study aimed to optimise the illumination protocol during conventional PDT in order to reduce pain without compromising treatment effectiveness. METHODS: In this prospective, randomised study with a split-face design, patients with, symmetrically distributed AKs were included...
May 12, 2018: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/29753123/photodynamic-therapy-in-combination-with-ranibizumab-versus-ranibizumab-monotherapy-for-wet-age-related-macular-degeneration-a-systematic-review-and-meta-analysis
#20
REVIEW
Yongxian Su, Jiawei Wu, Yu Gu
OBJECTIVE: To evaluate the efficacy and safety between photodynamic therapy (PDT) combined with intravitreal ranibizumab (IVR) and ranibizumab monotherapy in treating wet age-related macular degeneration (AMD). METHODS: A systematic search was performed in the PubMed, Embase, Web of Science and the Cochrane Library databases through December 31, 2017. The methodological quality of the references was evaluated according to the Cochrane quality assessment. RevMan 5...
May 9, 2018: Photodiagnosis and Photodynamic Therapy
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