Photodynamic therapy (PDT) employs non-toxic dyes called photosensitizers (PSs), which absorb visible light to give the excited singlet state, followed by the long-lived triplet state that can undergo photochemistry. In the presence of ambient oxygen, reactive oxygen species (ROS), such as singlet oxygen and hydroxyl radicals are formed that are able to kill cancer cells, inactivate microbial p...

Photodynamic therapy (PDT) is a promising method for skin pre-cancerous lesions and tumors. During PDT, photosensitizer (PS) activated by the appropriate wavelength of light in an oxygen environment to produce reactive species tumor-killing. Generally, photodynamic requires repeated treatment cycles, which can potentially induce resistance become increasing awareness clinical work. However, its...

Photodynamic therapy (PDT) of tumours, as a primary treatment or as an adjunctive intra-operative therapy, may expose major vascular structures to injury. PDT has also been proposed to prevent neointimal hyperplasia following angioplasty of stenotic arteries. This study aimed to determine the effect of PDT on the normal rabbit carotid artery, and to determine whether this injury resulted in wea...

Photodynamic therapy (PDT) and photothermal therapy (PTT) belong to the category of phototherapy and are based on the photophysical generation of either noxious reactive oxygen species, thereby inducing oxidative stress, or rather cell-hostile environmental conditions (local hyperthermia) with the general aim to destroy abnormal tissues. A great advantage of both strategies is the fact that the...

Photodynamic therapy (PDT) takes advantage of our understanding of the cutaneous response to topically applied porphyrins to selectively destroy malignant or premalignant cells. This type of therapy has been used to treat a variety of cutaneous diseases, including actinic keratoses, basal cell carcinoma, acne, and others. The treatment protocols are not standardized across institutions. We pres...

Photodynamic therapy (PDT) has become an attractive option used in tumor treatment via its direct tumoricidal activities or its immune-boosting activities. On the other hand, heat shock protein 70 has been found to be largely associated with the establishment of anti-tumor activities offered by hyperthermia treated tumor cells. In the present study, we found that injection of tumor-bearing mice...

Photodynamic therapy (PDT) is a promising, non-invasive therapeutic approach. PDT involves Photosensitizer (PS) drugs and an external light source is the essential components of PDT and cytotoxic reactive oxygen species are generated that destroys cancer cells. Despite of a new potential anticancer therapeutic strategy, success of PDT is limited due to low water solubility of photosensitizers w...

Pleural spread is difficult to treat in malignancies, especially in lung cancer and thymoma. Monotherapy with surgery fails to have a better survival benefit than palliative chemotherapy, the currently accepted treatment. Photodynamic therapy utilizes a photosensitizer to target the tumor site, and the tumor is exposed to light after performing a pleurectomy and tumor resection. However, the be...

Objective Identify yeast species isolated from unexposed, exposed and HIV-carrier children, and verify the effectiveness of low power laser photodynamic therapy (PDT) on the yeasts species belonging to the Candida genus. Methods Fifty children assisted by the Public Health Program of the city of Vitória da Conquista, Bahia, were selected and divided into three groups: unexposed to HIV, exposed ...

Gynaecological photomedicine offers new diagnostic and therapeutic methods based on the interaction of light with the reproductive organs. One example is photodynamic therapy (PDT) in which photosensitizers are applied systemically or topically for selective endometrial ablation. Several studies describing the potential use of PDT for this application are reviewed. Basic experimental and clinic...