introduction: due to penetration of pathogenic bacteria into the periodontal tissues in moderate to severe periodontitis, the mechanical methods are not sufficient in these cases. therefore, administration of local/systemic antibiotic is recommended following mechanical root debridement. however, side effects of antibiotics such as microbial resistance and patient allergy led to development of ...

Bacterial resistance to antibiotics has become a worldwide problem. One potential alternative for bacterial control is photodynamic therapy. 5-aminolevulinic acid is a natural precursor of the photosensitizer protoporphyrin IX. Relatively little is known about the antibacterial efficacy of photodynamic therapy using the systemic administration of 5-aminolevulinic acid; a few reports have shown ...

Coherent backscattering (CBS) is a beautiful physical phenomenon that takes place in a highly scattering medium, which has potential application in noninvasive optical property measurement. The current model that explains the CBS cone shape, however, assumes the incoming beam diameter is infinitely large compared to the transport length. In this paper, we evaluate the effect of a finite scalar ...

one The Roswell Park History of PDT: 1972 to the Present: A Personal Perspective, Thomas J. Dougherty ......................................................................1 two Principles of Photodynamic Therapy-Induced Killing of Tumor Cells, Nancy L. Oleinick and David Kessel .............................................................. 19 three PDT Laser Physics and Safety, Tom Mang .........

INTRODUCTION Vulvar intraepithelial neoplasia may lead to vulvar cancer. Vulvar cancer is a rare (accounting for about 2,5-5% of all malignant neoplasms), female genital organs cancer. Photodynamic therapy is a new treatment for a wide variety of malignancies and premalignant dysplasias. We wanted to examine the effectiveness of photodynamic therapy (PDT) on vulvar intraepithelial neoplasia (VI...

PURPOSE Loss of vascular barrier function has been observed shortly following vascular-targeting photodynamic therapy. However, the mechanism involved in this event is still not clear, and the therapeutic implications associated with this pathophysiologic change have not been fully explored. EXPERIMENTAL DESIGN The effect of vascular-targeting photodynamic therapy on vascular barrier function...

First year of upper tropospheric integrated content of CO2 from IASI hyperspectral infrared observations C. Crevoisier, A. Chédin, H. Matsueda, T. Machida, R. Armante, and N. A. Scott Lab. de Météorologie Dynamique/CNRS/IPSL, Ecole Polytechnique, Palaiseau, France Geochemical Research Department, Meteorological Research Institute, Tsukuba, Japan Center for Global Environmental Research, Nationa...

Photodynamic therapy seems to be able to control high-grade dysplasia within Barrett's esophagus about 80% of the time. Long-term results are not available, but the treatment is promising. Given the success with surgical intervention, however, use of photodynamic therapy should be reserved for nonsurgical candidates at the current time. The complications that occur with photodynamic therapy are...

We study the shape of the coherent-backscattering (CBS) cone obtained when resonant light illuminates a thick cloud of laser-cooled rubidium atoms in the presence of a homogenous magnetic field. We observe new magnetic field-dependent anisotropies in the CBS signal. We show that the observed behavior is due to the modification of the atomic-radiation pattern by the magnetic field (Hanle effect ...

Background & Aims: In this study with the aim of benefiting from non-laser sources in photodynamic therapy, photo and radio sensitivity of indocyanine green as a sensitizer in photodynamic and radiation therapies were investigated. Methods: Based on the broad absorption peak of indocyanine green and using non-coherent light, the experiments were performed on human cells derived from breast canc...