chlorophyll-a has been researched along with Staphylococcal-Infections* in 8 studies
1 review(s) available for chlorophyll-a and Staphylococcal-Infections
1 trial(s) available for chlorophyll-a and Staphylococcal-Infections
7 other study(ies) available for chlorophyll-a and Staphylococcal-Infections
Article | Year |
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Quantitative Analysis of Caspase-1 Activity in Living Cells Through Dynamic Equilibrium of Chlorophyll-Based Nano-assembly Modulated Photoacoustic Signals.
In situ construction of self-assemblies with unique property in living systems is a promising direction in the biomedical field. The noninvasive methods for significant enzyme activity in living cells or living subjects are imperative and meantime challenge tasks. The dynamic process of self-assembly of chlorophyll-based molecules in complex biological systems can be monitored by photoacoustic signals, which supports a noninvasive way to understand and quantitatively measure the activity of caspase-1. Furthermore, the activity of caspase-1 enables reflection of the bacterial infection in the early stage. Here, we present a biocompatible self-assembly from chlorophyll-peptide derivatives and first correlate the dynamic equilibrium with ratiometric photoacoustic signals. The intracellular equilibrium was managed by a bacterial infection precaution protein, i.e., caspase-1. This system offers a trial of noninvasive method to quantitative detection and real-time monitoring of bacterial infection in the early stage. Topics: Animals; Caspase 1; Chlorophyll; Macrophages; Mice; Nanostructures; Photoacoustic Techniques; RAW 264.7 Cells; Spectrometry, Fluorescence; Spectrophotometry, Ultraviolet; Staphylococcal Infections; Staphylococcus aureus | 2016 |
Therapeutic effect of photodynamic therapy using Na-pheophorbide a on osteomyelitis models in rats.
In this study, we examined the therapeutic effect of photodynamic therapy (PDT) using the photosensitizer Na-Pheophorbide a (Na-Phde a) on osteomyelitis models in rats.. Osteomyelitis is one of the most serious infectious problems in the orthopedic field. Recently, as a new clinical approach against septic arthritis, an experimental in vivo and in vitro model for the inactivation of methicillin-resistant-Staphylococcus aureus by PDT using Na-Phde a has been developed.. Methicillin-sensitive Staphylococcus aureus (MSSA) was injected into the tibia of the rats to create osteomyelitis models (n = 10, 10 legs). A total of 560 μmol/l of Na-Phde a solution was injected into five of these tibial osteomyelitis models (five legs) 48 h after the initial MSSA infection. Sixty minutes after the Na-Phde a injection, a semiconductor laser (125 mW, 670 nm) was used to irradiate the models for 10 min with a total energy of 93.8 J/mm(2). As a control group, five rats (five legs) were treated with a phosphate buffered saline injection at 48 h after MSSA infection. Weight and leg perimeter changes were plotted. Bacterial growth, histological examination and radiological examination were evaluated at 14 days after initial treatment.. PDT with Na-Phde a significantly prevented leg swelling. In the PDT group, bone destruction owing to osteomyelitis was inhibited not only histologically but also radiographically.. The results in these experiments show that PDT using Na-Phde a improved osteomyelitis in rats. This suggests that PDT using Na- Phde a can be a useful treatment for osteomyelitis. Topics: Animals; Biopsy, Needle; Chlorophyll; Disease Models, Animal; Female; Immunohistochemistry; Osteomyelitis; Photochemotherapy; Photosensitizing Agents; Random Allocation; Rats; Rats, Sprague-Dawley; Reference Values; Staphylococcal Infections; Statistics, Nonparametric; Tibia; Treatment Outcome | 2011 |
Bactericidal effect of photodynamic therapy using Na-pheophorbide a: evaluation of adequate light source.
To evaluate the efficacy of photodynamic therapy (PDT) against methicillin resistant-Staphylococcus aureus (MRSA) by selecting different light sources for irradiation and combining them with the photosensitizer Na-Pheophorbide a (Na-Phde a).. The treatment of drug-resistant bacterial infection is a serious issue. Recently, as a new clinical approach against septic arthritis, an experimental in vivo and in vitro model for the inactivation of MRSA by PDT using the photosensitizer Na-Phde a has been developed.. Na-Phde a solution (280 micromol/L) was mixed with MRSA strain bacterial inoculum. After 60 minutes, light was irradiated for 30 minutes using the following light sources: GaA1p semiconductor laser (300 mW, 670 nm), halogen lamp (75 W), xenon lamp (300 W) and fluorescent lamp (27 W). Bacterial growth was evaluated after 24 hours incubation in a blood agar culture.. The semiconductor laser and halogen lamp groups showed perfect bactericidal effects after PDT. The xenon lamp and fluorescent lamp groups showed partial bactericidal effects.. The results of this experiment showed that PDT using the combination of Na-Phde a with a semiconductor laser or halogen lamp showed a better bactericidal performance than with xenon or fluorescent lamps. These findings indicated that PDT using Na-Phde a could be a useful treatment for septic arthritis and soft tissue infection. Topics: Arthritis, Infectious; Chlorophyll; Methicillin-Resistant Staphylococcus aureus; Photochemotherapy; Radiation-Sensitizing Agents; Soft Tissue Infections; Staphylococcal Infections | 2009 |
[Effect of chlorophyllypt and chymotrypsin on the course of experimental staphylococcal infection].
Topics: Animals; Chlorophyll; Chymotrypsin; Drug Therapy, Combination; Eucalyptus; Female; Plant Extracts; Plants, Medicinal; Rabbits; Salpingitis; Staphylococcal Infections | 1973 |
[The use of chlorophyllypt in the complex treatment of sepsis in young children].
Topics: Anti-Infective Agents, Local; Chlorophyll; Eucalyptus; Humans; Infant; Infant, Newborn; Plants, Medicinal; Pyoderma; Staphylococcal Infections | 1972 |
[Use of Chlorophyllipt for therapeutic and preventive purposes in obstetrics and gynecology].
Topics: Chlorophyll; Drug Resistance, Microbial; Female; Genital Diseases, Female; Humans; Pregnancy; Pregnancy Complications, Infectious; Puerperal Disorders; Staphylococcal Infections | 1970 |
The inhibition of the coagulase of the Staphylococcus aureus by the water-soluble derivatives of sodium-copper chlorophyllin.
Topics: Blood Coagulation; Chlorophyll; Chlorophyllides; Coagulase; Enzymes; Micrococcus; Sodium; Staphylococcal Infections; Staphylococcus aureus; Water | 1959 |