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research Identification of a human type XVII collagen fragment with high capacity for maintaining skin health
In this study, researchers identified a collagen fragment, sample-1707, expressed in E. coli, which forms nanofibers and promotes blood clotting, osteoblast differentiation, and skin cell regeneration, making it a promising biomaterial for skin care, with a large-scale production yield of 600 mg/L.
research 244 Defective maintenance of hair follicle stem cells through COL17A1 loss orchestrates the hair follicle aging program
Loss of COL17A1 causes hair follicle stem cells to age and leads to hair loss.
research Hair Follicle Stem Cells Provide a Functional Niche for Melanocyte Stem Cells
COL17A1 is crucial for preventing hair graying and loss by supporting hair and pigment stem cells.
research Clinical and Laboratory Characteristics of Individuals Aged ≤17 Years With Homeostatic Iron Regulator (HFE) p.C282Y Homozygosity, a Common Hemochromatosis Genotype
This study observed that five out of fourteen individuals aged 13-16 years, who were homozygous for the p.C282Y mutation related to hemochromatosis, had increased liver and phlebotomy-mobilized iron levels.
research Sertoli-Leydig tumor in a 17-year-old girl: a case report
This case report discusses a 17-year-old in Haiti diagnosed with a rare ovarian Sertoli-Leydig tumor, emphasizing the importance of considering future fertility and psychosocial effects when managing such conditions.
research Analysis of the function of ADAM17 in iRhom2 curly-bare and tylosis with esophageal cancer mutant mice
In this study, researchers found that specific mutations in iRhom2 in mice lead to skin and hair abnormalities which depend on the presence of the protein ADAM17, suggesting a complex role for iRhom2 in tissue development and potential implications for treating tylosis with oesophageal cancer.
research 17b-Estradiol is Abundant in Skin and Regulates the Hair Follicle Cycle and Mirex Tumor Promotion
This study found that skin is a significant site for estrogen production in mice, impacting both hair cycle regulation and sensitivity to chemical carcinogenesis.
research Expression of mRNA for androgen receptor, 5alpha-reductase and 17beta-hydroxysteroid dehydrogenase in human dermal papilla cells
This study observes the expression of mRNA for androgen receptor, 5α‐reductase, and 17β‐hydroxysteroid dehydrogenase in human dermal papilla cells.
research In vivo alteration of the keratin 17 gene in hair follicles by oligonucleotide‐directed gene targeting
In this study, injecting chimeric RNA–DNA oligonucleotides into mice skin caused a temporary mutation in keratin 17, altering hair morphology, but the mutation was transient due to genetic compensation or cell replacement.
research Crystal Structure and Synthesis of 17α-Acetoxy-4-bromopregn-4-ene-3,20-dione
The document concludes that a compound with potential for treating prostate cancer and hair loss was successfully made and its detailed structure was confirmed.
research KRT17: A Key Driver of Cancer Therapy Resistance and Emerging Therapeutic Target
This study highlighted Keratin 17's critical role in cancer therapy resistance across several malignancies, involving various signaling pathways, and identified it as a significant biomarker and potential therapeutic target, particularly in reversing resistance.
research Prevalence of Hyperandrogenic States in Late Adolescent and Young Women: Epidemiological Survey on Italian High-School Students
This study estimates the prevalence of hyperandrogenic states in late adolescent and young females, revealing that these disorders often begin at a young age.
research Oxidative Activity of the Type 2 Isozyme of 17β-Hydroxysteroid Dehydrogenase (17β-HSD) Predominates in Human Sebaceous Glands
This study found that sebaceous glands predominantly exhibit oxidative activity of the type 2 17β-hydroxysteroid dehydrogenase isozyme, which is not inhibited by 13-cis retinoic acid.
research Characterization of a Cluster of Human High/Ultrahigh Sulfur Keratin-associated Protein Genes Embedded in the Type I Keratin Gene Domain on Chromosome 17q12-21
This study identified a cluster of genes on chromosome 17 related to hair keratin-associated proteins, including 37 genes forming seven multigene families, localized in the hair shaft's upper cortex.
research A IMAGEM CORPORAL E A PREOCUPAÇÃO COM GANHO DE PESO DE GESTANTES ADOLESCENTES EM UM MUNICÍPIO DO ESTADO DO MARANHÃO
research Intracrine androgen biosynthesis, metabolism and action revisited
This article discusses the role of androgens in metabolic and reproductive health and reports no new experimental results; the focus is on androgen receptor activation by testosterone and 5α-dihydrotestosterone.
research A randomized placebo-controlled study on the effects of pioglitazone on cortisol metabolism in polycystic ovary syndrome
In this study, pioglitazone treatment in insulin-resistant PCOS patients decreased relative 5alpha-reductase activity without significantly affecting cortisol levels or urinary cortisol excretion.
research Baicalin inhibits recruitment of GATA1 to the HSD3B2 promoter and reverses hyperandrogenism of PCOS
In this study, baicalin from Scutellaria baicalensis decreased androgen levels in both cells and PCOS model rats by inhibiting key gene expression, suggesting it may be a potential treatment for hyperandrogenism in PCOS.
research Feminizing Adrenocortical Carcinoma Without Gynecomastia
This report describes a rare case of a malignant feminizing adrenocortical tumor in a 44-year-old man who lacked the typical presentation of gynecomastia and died four months after diagnosis despite treatment.
research Genetic analysis does not confirm non-classical congenital adrenal hyperplasia in more than a third of the women followed with this diagnosis
This review discusses the manifestations of non-classical congenital adrenal hyperplasia due to 21-hydroxylase deficiency across different life stages, but reports no new findings.
research Liquid Chromatography-Mass Spectrometry Based Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated L-Cysteine
In this study, L-cysteine treated with the Trivedi Effect® showed significantly increased isotopic abundance ratios, which may enhance its stability and shelf-life.
research Phenol in dermatology: updated evidence on efficacy and safety
This review details phenol's dermatological uses and underscores its potent skin rejuvenation effects but emphasizes the need for caution due to risks of serious complications, including cardiac arrhythmias and organ failure, particularly with improper use or large-area applications.
research DIAGNOSTIC AND THERAPEUTIC UTILITY OF GONADOTROPHIN-RELEASING HORMONE AGONIST IN POSTMENOPAUSAL HYPERANDROGENISM OF OVARIAN ORIGIN
In this study of a postmenopausal woman with hyperandrogenism, GnRH agonist treatment significantly reduced testosterone levels, suggesting the androgen excess was ovarian in origin and indicating the potential of using GnRH agonists as a conservative treatment option when surgery is not feasible.
research Alternative androgen pathways
This review discusses alternative androgen pathways, including the "backdoor" pathway and pathways to 11-oxygenated steroids, and reports no new clinical results; the authors aim to clarify these concepts for better patient treatment.
research Identifying 17-β-HSD3 Deficiency in Patients with Karyotype 46,XY Misdiagnosed with Androgen Insensitivity Syndrome: A Pediatric Case Report
In this case report, researchers describe a 13-year-old phenotypic female with 46,XY karyotype, previously misdiagnosed with androgen insensitivity syndrome, who was later identified to have 17-beta-hydroxysteroid dehydrogenase type 3 deficiency, underscoring the importance of genetic and hormonal tests for accurate diagnosis of sex development disorders.
research Collagen XVIIα1 in skin and hair aging: Mechanisms, stem cell niche regulation, and translational strategies
This review highlights that collagen XVIIα1's role in maintaining dermal-epidermal junction integrity and hair follicle stem cell maintenance is compromised with age due to reduced levels and increased processing, potentially affecting skin and hair aging.
research Hirsutism and Menstrual Irregularity in a 16-year-old Girl
This case study reports that a 16-year-old girl with hirsutism and menstrual irregularities was diagnosed with a benign steroid cell ovarian tumor, after high testosterone levels indicated a potential androgen-secreting source.
research Puberty in Boys: Correlation of Plasma Levels of Gonadotropins (LH, FSH), Androgens (Testosterone, Androstenedione, Dehydroepiandrosterone and Its Sulfate), Estrogens (Estrone and Estradiol) and Progestins (Progesterone and 17-Hydroxyprogesterone)
In this study, significant elevations of DHA and testosterone were associated with pubic hair development and voice changes in boys during puberty.
research Crystal Structure and Synthesis of 17α-Acetoxy-pregn-4,6-diene-3,20-dione
This study determined the crystal structure and conformation of synthesized 17x-Acetoxy-pregn-4,6-diene-3,20-dione, revealing specific molecular interactions and structural details in an orthorhombic crystal system.