research Hair EtG: Alterations in segment levels accompanying hair growth
EtG levels in hair decrease significantly after one month of alcohol abstinence.
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research Development and validation of rapid and simultaneous method for determination of 12 hair-growth compounds in adulterated products by UHPLC–MS/MS
Researchers created a reliable method to detect hair-growth substances in products.
research Weakly-Supervised Hair SEM Microscope Image Segmentation Using a Priori Structure Information
The method improves hair image segmentation accuracy while reducing annotation costs.
research Evaluation of the predictive capacity of DNA variants associated with straight hair in Europeans
Certain DNA variants can predict straight hair in Europeans but are not highly specific.
research An evaluation of the RapidHIT™ ID system for hair roots stained with Diamond™ Nucleic Acid Dye
The RapidHIT ID system can effectively get DNA profiles from hair roots with enough cells.
research Influence of thermal hair straightening on cannabis and cocaine content in hair
Thermal hair straightening changes drug levels in hair, affecting test results.
research Recent advances in the characterization of hair of mummies from the Chilean Andean coast
The hair of two ancient Chilean mummies is well-preserved and contains high levels of heavy metals.
research On Pathways for Small Molecules Into and Out of Human Hair Fibers
Dye enters hair at the edges of cuticle cells and penetrates more from water than alcohol-based solutions.
research Experimental Investigations on Hair Fibers as Diffusion Bridges and Opiates as Solutes in Solution
Hair can absorb and transfer opiates when soaked in water, with damaged hair absorbing more.
research UPLC-MS/MS method for the simultaneous quantification of caffeine and illicit psychoactive drugs in hair using a single-step high-speed grinding extraction – Insights into a cut-off value for caffeine abuse
The conclusion is that a new method can measure caffeine and drugs in hair, finding caffeine abusers have 70 times more caffeine than normal, with a proposed cut-off value for abuse.
research Effects of Laparoscopic Ovarian Drilling on Restoration of Menstrual Cycles, Hormonal Profiles and Pregnancy Rate in Women with Polycystic Ovary Syndrome
Laparoscopic ovarian drilling improves menstrual cycles, hormone levels, and pregnancy rates in women with PCOS.
research Simultaneous determination of multi-class active pharmaceutical ingredients by UHPLC-HRMS
A new method was developed to accurately detect and measure 47 different drug ingredients in various products.
research Testing the impact of trait prevalence priors in Bayesian-based genetic prediction modeling of human appearance traits
Using trait prevalence priors in genetic prediction models for appearance traits is currently impractical due to limited knowledge and potential accuracy issues.
research Microscopical characterization of known postmortem root bands using light and scanning electron microscopy
The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.
research ARCHAEOLOGICAL AND CONTEMPORARY HUMAN HAIR COMPOSITION AND MORPHOLOGY
Mummy hair's chemical composition may not accurately show ancient people's health due to environmental contamination.
research Detection of cortisol, estradiol, and testosterone in archaeological human hair from the Dakhleh Oasis, Egypt
Ancient hair can preserve hormones, revealing health and fertility insights.
research Identifying molecular targets for reverse aging using integrated network analysis of transcriptomic and epigenomic changes during aging
Curcumin may help reverse aging by targeting specific genes.
research Preservation of melanoblasts of white hair follicles of segmental vitiligo lesions: A preliminary study
White hair follicles in vitiligo have fewer and less functional melanocytes.
research Hair as a retrospective calendar of cortisol production—Increased cortisol incorporation into hair in the third trimester of pregnancy
Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.
research High-throughput phenotyping methods for quantifying hair fiber morphology
Hair fiber shape and curvature are not significantly linked when ancestry is considered.
research Variation and Heritability in Hair Diameter and Curvature in an Australian Twin Sample
Hair diameter and curvature are mostly determined by genetics.
research A replication study confirmed the EDAR gene to be a major contributor to population differentiation regarding head hair thickness in Asia
The EDAR gene greatly affects hair thickness in Asian populations.
research Investigation of aging effects in human hair using atomic force microscopy
Aging makes hair thinner and rougher, with less clear edges.
research External post mortem artefact: a key issue in hair result interpretation
Hair test results can be misleading due to contamination, so they shouldn't be used alone to determine drug use.
research Omics for Precious Rare Biosamples: Characterization of Ancient Human Hair by a Proteomic Approach
The study developed a method to analyze ancient hair proteins using very small samples.
research The human hair: from anatomy to physiology
The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.
research Geometric classification of scalp hair for valid drug testing, 6 more reliable than 8 hair curl groups
A 6-group hair classification is more reliable for drug testing than an 8-group system.
research Systems Approach to Human Hair Fibers: Interdependence Between Physical, Mechanical, Biochemical and Geometric Properties of Natural Healthy Hair
Hair properties are interconnected; a comprehensive, cross-disciplinary approach is essential for understanding hair behavior.
research Influence of Chemical Straightening on the Stability of Drugs of Abuse in Hair
Chemical hair straightening significantly reduces detectable drug levels in hair.
research Determination of Vitamin B3 Vitamer (Nicotinamide) and Vitamin B6 Vitamers in Human Hair Using LC-MS/MS
The method can measure vitamin B3 levels in human hair accurately.