January 2021 in “American Journal of Applied Sciences” This study used in-lab hair samples to show that cut hairs found at a crime scene and on a suspect can be matched to confirm they were from the same individual.
7 citations
,
June 2015 in “EMBO Reports” This article discusses how DNA-based phenotyping is used by police to create visual profiles of suspects from crime scene samples, but reports no new research findings.
This study found that hair fibers broke down and lost keratin in extremely basic conditions, revealing the inner medulla and changing the color of the fibers.
60 citations
,
December 2005 in “Biomedical Papers” This article reviews hair analysis for drug detection and its applications in various fields, but reports no new research findings, emphasizing the need to consider the method's complexities and potential pitfalls.
December 2025 in “Rapid Communications in Mass Spectrometry” This study found that pepsin digestion was more effective than trypsin at identifying keratin-associated proteins in human hair shafts and confirmed that trypsin introduced a bias in the analysis of protein composition that pepsin can correct.
June 2025 in “Rapid Communications in Mass Spectrometry” In this study, researchers developed a simplified and reliable method to prepare human hair shaft samples, achieving over 75% protein extraction efficiency and improved keratin sequence coverage, with the approach showing high reproducibility across different labs and operators.
18 citations
,
April 2018 in “Biotechniques/BioTechniques” This study developed a method for extracting proteins from micro-sized human head hairs, facilitating proteomic analysis even with limited hair sample availability.
9 citations
,
December 2018 in “Journal of Analytical Toxicology” This study found that exposure to artificial sunlight led to variable changes in ethyl glucuronide levels in hair, with both increases and decreases observed depending on hair characteristics.
1 citations
,
June 1938 in “New England journal of medicine/The New England journal of medicine” Hair analysis can offer clues about a person, but individual differences limit making precise identifications.
This study suggests that keratin peptide signatures in human hair shafts may potentially be used to distinguish gender and ethnicity, although further validation with larger samples is needed.
This study suggests that keratin peptide signatures from human hair shafts could potentially distinguish gender and ethnicity, though confirmation in larger studies is needed.
This study examined the relationship between sympathetic nerve endings and alopecia using direct and indirect immunofluorescence on human tissue samples, reporting no new clinical results.
January 2010 in “Elsevier eBooks” This chapter reviews the formation of natural hair color, strategies for artificial coloring, and future trends, without presenting new research findings.
November 2001 in “PubMed” This research found that perming, combing, and stretching cause hair damage, leading to a significant reduction in keratin levels within a specific molecular weight range.
This study found that perming, combing, and stretching human hair lead to damage, as evidenced by a reduction in keratins with molecular weights between 67,000 to 43,000 daltons.
37 citations
,
October 2015 in “European Journal of Human Genetics” This study found that a genetic model using SNPs can predict early-onset male-pattern baldness with moderate accuracy, which may assist in decisions about interventions.
5 citations
,
February 2015 in “Journal of Bio- and Tribo-Corrosion” This study found that plasma jets can effectively clean and oxidize human hair fibers, with argon/oxygen plasma having the strongest effects, suggesting potential as an alternative to peroxide treatment.
This study found considerable variation in hair shaft proteomic profiles among Caucasian, African-American, Kenyan, and Korean subjects, with individual and site-specific differences observed.
94 citations
,
April 2018 in “Nature Genetics” This study identified more than 100 genetic loci associated with hair color variation in Europeans, explaining a significant portion of the trait's heritability and advancing understanding of hair pigmentation.
22 citations
,
January 2020 in “PeerJ” This study suggests that keratin peptide signatures in human hair shafts could potentially be used to distinguish gender and ethnicity, though further research on a larger scale is needed.
7 citations
,
February 2021 in “Legal Medicine” This study reports two cases of fatal metformin intoxication with hair concentrations significantly higher than those in subjects under treatment, marking the first use of hair analysis for such cases.
7 citations
,
January 2019 in “Journal of Analytical Toxicology” This study found that hair samples from chronic tramadol and cannabis users showed positive drug presence for 3-4 months and 6-7 months, respectively, after discontinuation.
4 citations
,
July 2024 in “BMC Zoology” This study found that the structure and mineral content of dromedary camel hair, specifically the medulla patterns, medulla index, and elemental composition, change with age, revealing differences among camels aged 1 year, 3-5 years, and 8-10 years.
4 citations
,
January 2015 in “Case reports in urology” This paper presents a case of penile tourniquet syndrome in an 8-year-old boy caused by his mother's hair coil, highlighting its rarity beyond infancy.
1 citations
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January 2012 in “Human health handbooks” This review discusses the factors influencing human hair color, including genetic components like the MC1R gene and enzyme activity, without presenting new experimental results.
The researchers reported that certain physical characteristics of hair shafts, such as length and color, may influence mtDNA read counts and degradation state when analyzed by massively parallel sequencing.
March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” In this study, researchers found that hair fibers exposed to bleaching and UV irradiation displayed significantly more damage, including increased adhesion and surface heterogeneity, compared to untreated hair, highlighting a synergistic degradation pathway affecting the hair cuticle's integrity.
August 2025 in “Bioscientia Medicina Journal of Biomedicine and Translational Research” In this case study, a 3-year-old with tinea capitis achieved complete resolution following treatment, highlighting hair salons as potential indirect transmission sites for infection and emphasizing trichoscopy's diagnostic value when traditional signs like Wood’s lamp fluorescence are missing.
This chapter emphasizes the critical role of the integumentary system in animal physiology, detailing its structures, immune functions, and sensory capabilities as crucial for homeostasis, protection, and various physiological processes.
January 2025 in “Analytical Methods” This study reports the development of a fluorescent ionic liquid that shows high sensitivity and selectivity for detecting dextran sulfate sodium, with potential applications in clinical diagnostics and environmental monitoring.