Daily Cosmetic Research Analysis
A ROS-responsive collagen hemostatic sponge with on-demand vancomycin release accelerated healing in MRSA-infected wounds in preclinical models. A PRISMA-guided murine systematic analysis indicates smoother breast implant surfaces elicit thinner capsules and less inflammation versus textured and polyurethane coatings. Environmental fungi biotransformed sunscreen UV filters, modulating endocrine activities while reducing toxicity, suggesting feasible bioremediation paths.
Summary
A ROS-responsive collagen hemostatic sponge with on-demand vancomycin release accelerated healing in MRSA-infected wounds in preclinical models. A PRISMA-guided murine systematic analysis indicates smoother breast implant surfaces elicit thinner capsules and less inflammation versus textured and polyurethane coatings. Environmental fungi biotransformed sunscreen UV filters, modulating endocrine activities while reducing toxicity, suggesting feasible bioremediation paths.
Research Themes
- Smart biomaterials for infected wound care
- Host–implant interface and surface texture biology
- Bioremediation of cosmetic ingredients and endocrine activity
Selected Articles
1. Development of ROS-responsive collagen-based hemostatic sponges for the repair of MRSA-infected wounds.
A collagen sponge engineered for ROS-triggered, covalently tethered vancomycin release improved hemostasis and accelerated healing in MRSA-infected full-thickness wound models. Amino-rich modification boosted drug loading and mechanical/biologic performance, outperforming non-ROS and adsorption controls.
Impact: Introduces a smart, infection-responsive hemostatic biomaterial that couples rapid hemostasis with targeted antimicrobial delivery—addressing two major barriers to healing in contaminated wounds.
Clinical Implications: If translated, ROS-triggered on-demand antibiotic delivery could reduce systemic antibiotic exposure, enhance control of MRSA in contaminated wounds, and improve outcomes in complex surgical and reconstructive settings.
Key Findings
- Amino-rich chemical modification of collagen increased primary amine content, improving vancomycin loading, mechanical strength, and hemostatic performance.
- ROS-responsive covalent linkage enabled controlled vancomycin release with superior anti-MRSA efficacy versus non-ROS and physical adsorption approaches.
- In MRSA-infected full-thickness wound models, the ROS-responsive sponge significantly accelerated healing and skin regeneration compared with controls.
Methodological Strengths
- Direct comparison with non-ROS-responsive and physical adsorption controls in infected full-thickness wound models
- Integrated materials characterization linking chemistry to hemostatic function and antibacterial performance
Limitations
- Preclinical animal data only; human safety and efficacy are untested
- Sample size and detailed statistical parameters are not specified in the abstract; long-term resistance and biocompatibility require study
Future Directions: Conduct GLP toxicology and large-animal studies, evaluate spectrum against polymicrobial biofilms, optimize antibiotic payloads, and design first-in-human trials in contaminated surgical wounds.
Uncontrolled bleeding and infections, particularly from drug-resistant bacteria like Methicillin-Resistant Staphylococcus aureus (MRSA), pose significant challenges in clinical wound management, delaying healing, increasing patient discomfort, and elevating healthcare costs. This study introduces a novel reactive oxygen species (ROS)-responsive collagen-based hemostatic sponge designed to enhance wound healing and minimize blood loss, especially in MRSA-infected wounds. By chemically modifying the carboxyl groups of collagen with amino-rich oligomers, the primary amino content was increased, enhancing drug loading capacity-particularly for vancomycin-while also improving the sponge's mechanical properties, hemostatic performance, and biological stability. The ROS-responsive covalent bonding of vancomycin facilitated controlled vancomycin release in response to ROS, offering superior antibacterial efficacy and specifically targeting MRSA more effectively than conventional non-ROS-responsive approaches. In MRSA-infected full-thickness skin repair models, the ROS-responsive vancomycin-loaded sponge significantly enhanced wound healing and skin regeneration compared to both the physical adsorption group and the non-ROS-responsive release group. These results underscore the potential of the ROS-responsive collagen composite as an advanced hemostatic material with enhanced antibacterial capabilities, providing rapid hemostasis and improved healing outcomes for complex or infected wounds.
2. Inflammatory response to various implant surfaces in murine models: A systematic analysis.
Across murine models, smooth breast implant surfaces produced thinner, more organized capsules with lower inflammation, whereas increasing texture—particularly polyurethane foam—drove denser capsules and robust inflammatory responses. Findings emphasize surface texture as a key determinant of host response.
Impact: Synthesizes preclinical evidence under standardized ISO categories, informing implant surface selection and future design to mitigate capsular contracture and inflammation.
Clinical Implications: Preferencing smoother surfaces may reduce inflammatory capsule formation; however, translation to human outcomes requires cautious extrapolation and clinical validation.
Key Findings
- Smooth implant surfaces were associated with thinner, more orderly capsules and lower inflammation in murine models.
- Micro- and macrotextured surfaces induced progressively greater tissue integration and inflammatory responses.
- Polyurethane-coated implants elicited robust inflammation with increased neoangiogenesis and thicker, more cellular capsules.
Methodological Strengths
- PRISMA-guided systematic review across multiple databases with ISO 14607:2018-based surface classification
- Comparative assessment of capsule histology, inflammation patterns, and biomechanics
Limitations
- Preclinical murine data with heterogeneity and data inconsistencies limit direct clinical translation
- Exclusion of human studies precludes direct estimation of patient-relevant outcomes
Future Directions: Harmonize animal model protocols aligned with ISO surface metrics and bridge to human registries and trials assessing capsular contracture and inflammation endpoints.
Breast implants (BIs) are commonly used in cosmetic and reconstructive breast surgery but are linked to several complications such as capsular contracture, implant rupture, and potential malignancies. The key to mitigating these issues is the exploration of host-implant interactions, especially in response to the diverse BI surface textures, classified under ISO 14607:2018 standards. We aimed to systematically analyze the effects of different BI surface textures on inflammatory response and capsule formation in murine models, to improve BI design and clinical outcomes. A PRISMA-guided systematic review was conducted across 4 databases, focusing on murine model studies related to BI surface variations. Non-murine, human studies and those involving physical or pharmacological interventions were excluded. Implant surfaces were categorized per ISO 14607:2018, including smooth, microtextured, macrotextured, and polyurethane foam-coated (PU) BI, and compared with new ISO 14607:2018. Outcomes were assessed on capsule characteristics, inflammatory patterns, and biomechanical properties. Smooth-surfaced implants were linked to thinner, more orderly capsules, with a subdued inflammatory reaction. Microtextured implants elicited a moderate response with varying tissue integration and inflammation levels. Macrotextured implants showed pronounced tissue reaction. PU implants induced a robust inflammatory response, characterized by increased neoangiogenesis and thicker, more cellular capsules. Data inconsistencies across studies highlighted the complexity of biological responses to different implant surfaces. In conclusion, smooth implants developed thinner capsules and lower inflammation. Increasing surface texture resulted in denser capsules and more abundant inflammatory patterns, highlighting the significant role of BI surface texture in influencing host responses.
3. Biotransformation of oxybenzone and 3-(4-methylbenzylidene)camphor in Cunninghamella species: Potential for environmental clean-up of widely used sunscreen agents.
Cunninghamella species degraded oxybenzone and 4-MBC, with C. blakesleeana showing the highest removal efficiency, while processed products lacked mutagenicity and HepG2 cytotoxicity but displayed altered endocrine activities. CYP450 participation was implicated, indicating fungal detoxification pathways relevant to OUVF bioremediation.
Impact: Demonstrates, for the first time, fungal biotransformation of widely used sunscreen agents with multi-assay toxicology profiling, opening a plausible route for environmental clean-up of cosmetic UV filters.
Clinical Implications: While primarily environmental, insights could inform safer sunscreen formulations and wastewater management, potentially reducing human and ecological exposure to persistent OUVFs.
Key Findings
- Cunninghamella strains utilized OUVFs; C. blakesleeana achieved the most efficient removal of oxybenzone and 4-MBC, comparable to A. niger.
- Fungus-processed samples were non-mutagenic (Ames test) and non-cytotoxic to HepG2 cells, with improved SH-SY5Y neurotoxicity and ecotoxicity profiles.
- Endocrine activities shifted post-biotransformation: BP-3 showed higher estrogenic agonism and reduced androgen antagonism; 4-MBC lost estrogenic agonism but gained estrogenic antagonism.
- CYP450 enzymes were implicated in biotransformation, elucidating fungal detoxification pathways.
Methodological Strengths
- Use of multiple fungal strains with parallel toxicology assessment (Ames, HepG2, SH-SY5Y, ecotoxicity) and in silico analysis
- Mechanistic probing via CYP450 inhibition to map biotransformation pathways
Limitations
- Laboratory conditions may not reflect environmental complexity; fate and safety of all metabolites remain to be fully characterized
- Endocrine activity shifts warrant cautious interpretation regarding ecological and human health impacts
Future Directions: Scale-up bioreactors with mixed microbial consortia, comprehensive metabolite identification, and real-world wastewater validation to inform regulatory and formulation strategies.
The extensive use of organic UV filters (OUVFs) has led to these compounds being ubiquitously detected in the environment and considered a new kind of environmental pollutant. As OUVFs cannot be efficiently eliminated by conventional treatment processes, there is an urgent need to develop new innovative solutions for their removal. The present work investigates the efficacy of three Cunninghamella strains in the biodegradation of OUVFs: oxybenzone (BP-3) and 3-(4-methylbenzylidene)camphor (4-MBC). Moreover, a cytochrome P450 (CYP450) inhibition study was conducted, and Cunninghamella-processed samples in silico and in vitro toxicity were evaluated. Our results indicated the ability of Cunninghamella strains to utilize OUVFs. Among the tested Cunninghamella strains, both agents were the most efficiently removed by C. blakesleeana. These results were comparable with A. niger biodegradation capacity. In vitro studies of the fungi-processed samples confirmed no mutagenicity in the Ames test and the lack of cytotoxicity against HepG2 cell line. Moreover, Cunninghamella treatment positively influenced OUVFs SH-SY5Y neurotoxicity and ecotoxicity. After fungal treatment, BP-3 agonistic estrogenic activity was higher, whereas antagonistic androgenic effect was lower than before biotransformation. 4-MBC, after biotransformation, lost agonistic estrogenic activity, but gained antagonistic estrogenic properties. Additionally, this study confirmed the involvement of CYP450 enzymes in BP-3 and 4-MBC biotransformation, thus contributing to a better understanding of the detoxification pathways of OUVFs in fungi. In conclusion, these findings demonstrated, for the first time, that using environmental fungi Cunninghamella for the biodegradation of BP-3 and 4-MBC represents a potent approach for eliminating contaminants from the natural environment.