Effects of reactive oxygen species on skin photoaging

The large surface area of the skin, high metabolism and location at the border of two environments (external and internal) cause continuous production of free radicals within the skin. There are two mechanisms of skin photoaging. The first one involves UVA-induced production of reactive oxygen species. The second mechanism is based on a direct interaction of UVB with DNA and induction of damage in the DNA structure. One way by which UVA leads to skin aging is activation of the AP-1 transcription factor due to singlet oxygen, which is released by UV radiation. Antioxidants slow down oxidation leading to the formation of free radicals, or inactivate already formed free radicals, and thereby accelerate interruption of chain reactions. Moreover, photoprotection has a key role in combating photoaging and eliminating its effects

Case Reports and Experts Opinions about Current Use of Leech Therapy in Dermatology and Cosmetology

This article aimed to determine the experts’ opinion on the use of hirudotherapy in cosmetology, to supplement knowledge, and to identify factors that, in the opinion of experts, affect the effectiveness and frequency of use of this method in eliminating skin problems. The study was conducted using the expert interview method. The research tool was a categorized expert interview questionnaire using the CAWI (Computer Assisted Web Interview) technique. Hirudotherapy is one of the oldest healing methods. The mechanism of action is based on the therapeutic properties of bioactive substances isolated from leech saliva. It has been shown to have a wide range of applications in the treatment of numerous diseases in various fields of medicine, including dermatology and cosmetology. Despite its therapeutic properties and effectiveness, hirudotherapy is a rarely used tool in cosmetology. It has been found effective in the treatment of many dermatoses. The most spectacular effects have been observed in the treatment of rosacea, local inflammations, lipomas, skin scars, hard to heal wounds and contusions

Case Reports and Experts Opinions about Current Use of Leech Therapy in Dermatology and Cosmetology

This article aimed to determine the experts’ opinion on the use of hirudotherapy in cosmetology, to supplement knowledge, and to identify factors that, in the opinion of experts, affect the effectiveness and frequency of use of this method in eliminating skin problems. The study was conducted using the expert interview method. The research tool was a categorized expert interview questionnaire using the CAWI (Computer Assisted Web Interview) technique. Hirudotherapy is one of the oldest healing methods. The mechanism of action is based on the therapeutic properties of bioactive substances isolated from leech saliva. It has been shown to have a wide range of applications in the treatment of numerous diseases in various fields of medicine, including dermatology and cosmetology. Despite its therapeutic properties and effectiveness, hirudotherapy is a rarely used tool in cosmetology. It has been found effective in the treatment of many dermatoses. The most spectacular effects have been observed in the treatment of rosacea, local inflammations, lipomas, skin scars, hard to heal wounds and contusions

Effects of reactive oxygen species on skin photoaging

The large surface area of the skin, high metabolism and location at the border of two environments (external and internal) cause continuous production of free radicals within the skin. There are two mechanisms of skin photoaging. The first one involves UVA-induced production of reactive oxygen species. The second mechanism is based on a direct interaction of UVB with DNA and induction of damage in the DNA structure. One way by which UVA leads to skin aging is activation of the AP-1 transcription factor due to singlet oxygen, which is released by UV radiation. Antioxidants slow down oxidation leading to the formation of free radicals, or inactivate already formed free radicals, and thereby accelerate interruption of chain reactions. Moreover, photoprotection has a key role in combating photoaging and eliminating its effects

Comprehensive Evaluation of the Safety and Efficacy of BAFASAL® Bacteriophage Preparation for the Reduction of Salmonella in the Food Chain

Bacteriophages are bacterial predators, which are garnering much interest nowadays vis-à-vis the global phenomenon of antimicrobial resistance. Bacteriophage preparations seem to be an alternative to antibiotics, which can be used at all levels of the food production chain. Their safety and efficacy, however, are of public concern. In this study, a detailed evaluation of BAFASAL® preparation was performed. BAFASAL® is a bacteriophage cocktail that reduces Salmonella in poultry farming. In vivo acute and sub-chronic toxicity studies on rats and tolerance study on targeted animals (chicken broiler) conducted according to GLP and OECD guidelines did not reveal any signs of toxicity, which could be associated with BAFASAL® administration. In addition, no evidences of genotoxicity were observed. The tolerance study with 100-times concentrated dose also did not show any statistically significant differences in the assessed parameters. The in vitro crop assay, mimicking normal feed storage and feed application conditions showed that BAFASAL® reduced the number of Salmonella bacteria in experimentally contaminated feed. Moreover, reductions were observed for all examined forms (liquid, powder, spray). Furthermore, the in vivo efficacy study showed that treatment with BAFASAL® significantly decreased Salmonella content in caeca of birds infected with Salmonella Enteritidis. Detailed examination of BAFASAL® in terms of safety and efficacy, adds to the body of evidence that bacteriophages are harmless to animals and effective in the struggle against bacteria