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.
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210-240 / 705 results 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 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.
research High-throughput phenotyping methods for quantifying hair fiber morphology
Quantifying hair shape is better than using racial categories for understanding hair characteristics.
research Research on the Mechanism of Hair Dyeing Agents and Strategies for Health Risks Reduction
Hair dyes can be harmful, but risks vary by person and can be reduced.
research SEM/SDD-EDS—An analytical tool to identify water borne micro minerals pick up in human scalp hair cuticle due to water quality
Water quality affects mineral content in hair, and coconut oil can protect against damage.
research Study of Hair Patterns of species of Muridae Family from Amravati District, Maharashtra.
Muridae species have unique hair patterns specific to each genus and species.
research Variation in human hair ultrastructure among three biogeographic populations
Different populations have distinct hair structures related to their ancestry.
research Microbiome in the hair follicle of androgenetic alopecia patients
Hair loss patients have different microbes in hair follicles, possibly affecting hair loss.
research Electrophoretic variability in human hair: Comparative sodium dodecyl sulfate‐polyacrylamide gel electrophoresis of body and head hair proteins
Keratin proteins are consistent across different hair types from the same person.
research Qualitative investigation of fresh human scalp hair with full-field optical coherence tomography
Melanin density affects hair color, and this method can help in cosmetic assessments and diagnosing hair diseases.
research Love is in the hair: arginine methylation of human hair proteins as novel cardiovascular biomarkers
Human hair protein modifications could potentially indicate heart disease risk.
research TYPICAL MORPHOLOGICAL CHARACTERISTICS OF THE SKIN STRUCTURE OF THE HAIR PART OF THE NORMAL HUMAN HEAD AND WITH HAIR LOSS
Androgenic alopecia causes hair follicle degradation and skin restructuring, but some hair elements remain.
research Rapid determination and quantification of hair-growth compounds in adulterated products by ultra HPLC coupled to quadrupole-orbitrap MS
About 21% of tested hair loss supplements contained illegal synthetic drugs.
research Ultrastructural Characteristics of Neonate Scalp Hair
Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.