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- W3088190183 endingPage "e2843" @default.
- W3088190183 startingPage "e2843" @default.
- W3088190183 abstract "Current treatment modalities are limited in their approach and success for hair loss. QR 678 & QR 678 Neo are new formulations, consisting of a combination of growth factors and peptides. This study demonstrates safety analysis of QR 678 & QR 678 Neo formulation, using in vitro cytotoxicity assay and in vivo animal efficacy.Factors including vascular endothelial growth factor, basic fibroblast growth factor, insulin-like growth factor-1, keratinocyte growth factor, and copper tripeptide 1 (QR 678) or their biomimetic peptides (QR678 Neo) were suspended in a sterile injectable vehicle. The 3-2,5-diphenyl tetrazolium bromide assay was used to explore the cytotoxic effects of each factor used in the compositions in human keratinocyte cell and human fibroblast cell assays. An in vivo analysis, wherein study animals were given intradermal QR 678 & QR 678 Neo injections, was conducted to assess whether the formulations produce hair growth. Also, hair follicle viability was checked by intradermal injection of the pharmaceutical compositions in secondary alopecia.In both formulations, a positive response was observed with respect to the number of mice exhibiting hair growth at the injection sites. The injections caused retention of hair in a 0.25-cm radius around the injection site. On cytotoxicity study, all the factors were found to be safe in human keratinocyte cell and human fibroblast cell assay. A positive response was demonstrated in animals on treatment with the chemotherapeutic agent.Intradermal injections of QR 678 & QR 678 Neo hair growth factor formulations are a safe and efficacious option for alopecia. Results seem encouraging enough to warrant a trial in humans with secondary alopecia, post cancer chemotherapy." @default.
- W3088190183 created "2020-10-01" @default.
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- W3088190183 date "2020-08-01" @default.
- W3088190183 modified "2023-09-27" @default.
- W3088190183 title "QR678 & QR678 Neo Hair Growth Formulations: A Cellular Toxicity & Animal Efficacy Study" @default.
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- W3088190183 doi "https://doi.org/10.1097/gox.0000000000002843" @default.
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