Facial aging is a multifactorial process involving changes in bone, fat compartments, ligaments, muscles, and skin. Collagen biostimulators, including synthetic agents and autologous platelet concentrates, have gained attention for facial rejuvenation. Injectable platelet-rich fibrin (i-PRF), a s...
Sigal peptides have garnered remarkable efficacy in rejuvenating photoaged skin and delaying senescence. Nevertheless, their low solubility and poor permeability bring about a formidable challenge in their transdermal delivery. To address this challenge, bioactive ionic liquids (ILs) synthesized ...
Trashi O, Satish N, Trashi I, Hagge LM, Wijesundara YH, Hu C et al.
The skin, our largest organ, protects against environmental dangers but is vulnerable to various conditions like infections, eczema, dermatitis, psoriasis, skin cancer, and age-related collagen and elastin degradation. Its outer layer, the water-impermeable epidermis, presents challenges for pass...
ACS applied materials & interfaces··PMID: 39422705
Adak A, Castelletto V, Hamley IW, Seitsonen J, Jana A, Ghosh S et al.
The self-assembly of lipopeptide (peptide amphiphile) molecules bearing single linear lipid chains has been widely studied, as has their diverse range of bioactivities. Here, we introduce lipopeptides bearing one or two cycloalkane chains (cycloheptadecyl or cyclododecyl) conjugated to the collag...
Archives of dermatological research··PMID: 38850353
Rasouli M, Shahghasempour L, Shirbaghaee Z, Hosseinzadeh S, Abbaszadeh HA, Fattahi R et al.
Despite the great progress in developing wound dressings, delayed wound closure still remains a global challenge. Thus, developing novel wound dressings and employing advanced strategies, including tissue engineering, are urgently desired. The carboxylated cellulose was developed through the in s...
Vitali A, Paolicelli P, Bigi B, Trilli J, Di Muzio L, Carriero VC et al.
In this study, the amphiphilic N-palmitoyl-KTTKS peptide was integrated in the bilayer of egg-derived phosphatidylcholine (PC) vesicles using two different preparation methods, namely thin-film evaporation (TLE) and reverse-phase evaporation (REV). Both the REV and TLE methods allowed for the for...
The Journal of clinical and aesthetic dermatology··PMID: 36909866
Aruan RR, Hutabarat H, Widodo AA, Firdiyono MTCC, Wirawanty C, Fransiska L et al.
Crow's feet is one of the signs of skin aging. Many studies regarding skin aging have been carried out in Caucasians, as for Asians, there are different genotypes and phenotypes. Some anti-aging treatments carry a slightly higher risk of side effects and irritation in Asian skin. Currently, the u...
Gomes A, Bessa LJ, Fernandes I, Aguiar L, Ferraz R, Monteiro C et al.
Following our previous reports on dual-action antibacterial and collagenesis-inducing hybrid peptide constructs based on "pentapeptide-4" (PP4, with amino acid sequence KTTKS), whose N-palmitoyl derivative is the well-known cosmeceutical ingredient Matrixyl, herein we disclose novel ionic liquid/...
Kachooeian M, Mousivand Z, Sharifikolouei E, Shirangi M, Firoozpour L, Raoufi M et al.
Wound healing is one of the most complex biological processes. Studies show that Matrixyl (MTI), known as a cosmetic peptide, can lead to a faster healing process. The contribution of MTI to collagen formation during wound healing also depends on its mode of delivery and its release over time. He...
International journal of cosmetic science··PMID: 34272744
Flagler MJ, Tamura M, Laughlin T, Hartman S, Ashe J, Adams R et al.
To explore synergistic effects related to skin regeneration, peptides with distinct biological mechanisms of action were evaluated in combination with different skin cell lines in the presence or absence of niacinamide (Nam). Furthermore, the synergistic responses of peptide combinations on globa...
Journal of pharmaceutical and biomedical analysis··PMID: 33281001
Errante F, Menicatti M, Pallecchi M, Giovannelli L, Papini AM, Rovero P et al.
Recently, several peptides are used as active ingredients in topical cosmetic formulations, few information are available on their dermal stability against proteases. In this study, it was developed a simple and reliable assay to evaluate the stability of cosmeceutical peptides in skin homogenate...
Lys-Thr-Thr-Lys-Ser (KTTKS) minimally crosses the skin because of hydrophilicity; therefore, its palmitoyl derivative, palmitoyl-KTTKS (Pal-KTTKS), is used in cosmetic products. In spite of this, there is insuffi cient information on its physicochemical properties and the effects of palmitoylatio...
Tałałaj U, Uścinowicz P, Bruzgo I, Surażyński A, Zaręba I, Markowska A et al.
KTTKS is a matrikine that originates from the proteolytic hydrolysis of collagen. This peptide stimulates ECM production and types I and III collagen expression in vitro. A more stable form of KTTKS is pal-KTTKS, known as Matrixyl® or palmitoyl pentapeptide-3. A series of novel pentapeptides...
Ultraviolet (UV) irradiation is a potent inducer for skin photoaging. This paper investigated the anti-photoaging effects of the acetylated and amidated hexapeptide (AAH), originally identified from Spirulina platensis, in (Ultraviolet B) UVB-irradiated Human immortalized keratinocytes (Hacats) a...
Gomes A, Bessa LJ, Fernandes I, Ferraz R, Mateus N, Gameiro P et al.
Antimicrobial resistance is becoming one the most serious health threats worldwide, as it not only hampers effective treatment of infectious diseases using current antibiotics, but also increases the risks of medical procedures like surgery, transplantation, bone and dental implantation, chemothe...
A novel lipopeptide C16KTTβAH was designed that incorporates the KTT tripeptide sequence from "Matrixyl" lipopeptides along with the bioactive βAH (β-alanine-histidine) carnosine dipeptide motif, attached to a C16 hexadecyl lipid chain. We show that this peptide amphiphile self-...
Biological & pharmaceutical bulletin··PMID: 31061314
Mai Y, Niu Z, He W, Lai X, Huang S, Zheng X et al.
Dendrobium officinale protocorms (DOPs) are a specific developmental stage of Dendrobium officinale KIMURA et MIGO, which is used in folk medicine to ease skin issues, such as wrinkles and erythema. The purpose of the current study was to evaluate the effect of DOPs on UV irradiation-induced skin...
Krishnamoorthy N, Tseng YT, Gajendrarao P, Sarathchandra P, McCormack A, Carubelli I et al.
The ability of cells to secrete extracellular matrix proteins is an important property in the repair, replacement, and regeneration of living tissue. Cells that populate tissue-engineered constructs need to be able to emulate these functions. The motifs, KTTKS or palmitoyl-KTTKS (peptide amphiphi...
Tissue engineering and regenerative medicine··PMID: 30603464
Park H, An E, Cho Lee AR
To evaluate whether Palmitoyl-pentapeptide (Pal-KTTKS), a lipidated subfragment of type 1 pro-collagen (residues 212-216), plays a role in fibroblast contractility, the effect of Pal-KTTKS on the expression of pro-fibrotic mediators in hypertropic scarring were investigated in relation with trans...
Guglielmi DA, Martinelli AM, Rissi NC, Cilli EM, Soares CP, Chiavacci LA et al.
In this work, we report the synthesis of a peptide analogue of the KTTKS, termed Ac- Wahx-KTTKS and evaluate its cytotoxicity and role in biosynthesis of collagen for future application in skin aging. The peptide was obtained with purity higher than 97.5%. In the cytotoxicity assay, we observed n...
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