Biology subjects

Privitera, A.

Publications and source records attributed to Privitera, A..

4 recordsLinked to original sources

bioRxiv2025

Innovations in skin aging: biomimetic exosomes versus natural exosomes

In this study, we compared the effectiveness of two commercial products contain biomimetic and natural exosomes on skin aging used two cells line, keratinocytes and fibroblasts. MTT assay and scratch-wound assay were employed to evaluate their in vitro effects. The treatment with product containing natural exosomes purified from bovine colostrum and loaded with growth factors and cytokines purified from bovine colostrum (AMPLEX PLUS technology), was able to significantly enhance cell proliferation of fibroblasts and keratinocytes at 24 hours compared to cells treatment with product containing biomimetic exosomes and compared to untreated cells (control). Product containing natural exosomes was also able to close the wound scratch after 24 hours. The obtained results suggest that the product containing exosomes derived from bovine colostrum has excellent structural and functional stability offer great potential as natural product for skin aging damage and wound healing.

cell biology↗

bioRxiv2025

A new product containing secretome purified from bovine colostrum, Purasomes IRC100+, in the treatment of vaginal atrophy: in vitro study to evaluate safety and effectiveness

Vaginal atrophy consists of the loss of elasticity and thinning of the vaginal tissues and mucous membranes. This is a condition that affects women especially during menopause, following the hormonal decline resulting from the cessation of ovarian activity. The objective of the present study was evaluated the effects of Purasomes IRC100+ on the proliferation and migration of VK2/E6E7 vaginal epithelial cells and on fibroblasts by in vitro experiments. We tested three different concentrations (0.5%, 1% and 2%). We found that cell viability was highest at 2% Purasomes IRC100+ concentration for both cell lines. The scratch-wound assay was also done. Compared with the cell scratch at 0 h, cells in all groups migrated after 24 h, the scratch was significantly reduced in treated cells compared to untreated cells. In particular, the cell migration rates were 77% and 82%, respectively for VK2/E6E7 cells and fibroblasts treated with 2% of Purasomes IRC100+. Finally, this product promotes vaginal epithelial cell proliferation and therefore it could improve vaginal atrophy and vaginal wound healing.

cell biology↗

bioRxiv2024

Exosomes for facial repair, regeneration and rejuvenation: comparison between different commercial products

Exosomes have been studied as a potential therapeutic option for improving skin texture. The mode of action of exosomes for skin texture likely involves several mechanisms, including stimulation of collagen production, promotion of skin cell proliferation; reduction of oxidative stress; regulation of inflammatory and antioxidant responses; extracellular matrix remodeling, which is important for maintaining skin structure and function. Aim of this study is to compare the in vitro effects of some commercial products that use new technologies containing plant derived nanovesicles from Rosa damascena callus, Centella asiatica callus, Euphorbia supina stem and exosomes from bovine colostrum passively loaded with growth factors and cytokines purified from bovine colostrum, for facial repair, regeneration and rejuvenation. Of all the products tested, only product containing exosomes purified from colostrum gave very encouraging results in terms of effects on proliferation, cell viability and wound repair. The other products tested gave results comparable to the untreated samples.

cell biology↗

bioRxiv2024

Nutri Complex 150+: a new and effective approach to facial rejuvenation

Skin is the largest multifunctional human organ and possesses a complex multilayered structure with the ability to regenerate and renew. The key role in skin regeneration is played by fibroblasts, also playing an important role in wound healing process. We used different methods to evaluate on human fibroblasts the in vitro effects of a new compound called Nutri Complex 150+ (NC150+), containing a mixture of 20 different biologically active factors (GF20) and exosomes isolated and purified from bovine colostrum. NC150+ was able to significantly enhance cell proliferation/metabolic status of fibroblasts at both 24 and 48 hours compared to untreated (control) cells. NC150+ was also able to enhance the ability of human fibroblasts to close the wound scratch. Our findings demonstrate the ability of NC150+, based on a new technology called AMPLEX plus, to enhance cell proliferation/metabolic status of fibroblasts. The obtained results also suggest how NC150+ could be potentially effective in treating skin injury.

cell biology↗