research Growth pattern and turnover of carbon and nitrogen measured by stable isotope ratios in the hair of sika deer (Cervus nippon)
Shoulder guard hair best shows sika deer's diet.
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330-360 / 1000+ results research Growth pattern and turnover of carbon and nitrogen measured by stable isotope ratios in the hair of sika deer ( Cervus nippon )
Sika deer shoulder hair is good for analysis.
research Chemical Mechanism of the Covalent Modification of 5.alpha.-Reductases by Finasteride as Probed by Secondary Tritium Isotope Effects
Finasteride modifies 5-alpha-reductases through a two-step process, affecting inhibitor potency and possibly causing side effects.
research Testosterone and doping control
The document concludes that better biomarkers are needed to detect long-term oral testosterone use in athletes.
research Facial preservation following extreme mummification: Shrunken heads
Shrunken heads retain some facial features and hair characteristics, allowing for limited individual identification.
research Matrix matching in quantitative bioanalysis by LC–MS/MS a dream or a reality?
Accurate quantitative bioanalysis using LC-MS/MS is challenging due to matrix effects, but using internal standards and new methods like in-sample calibration could improve results.
research The 39th Manfred Donike workshop on doping analysis
The 39th Manfred Donike Workshop discussed methods for detecting misuse of steroids, gene doping, and the complexity of identifying drug residues in urine, highlighting the ongoing efforts to improve global anti-doping work.
research Sebocytes are the Key Regulators of Androgen Homeostasis in Human Skin
Sebocytes play a key role in controlling androgen levels in human skin.
research YOU ARE NOT WHAT YOU EAT DURING STRESS: AN ISOTOPIC EVALUATION OF HUMAN HAIR FROM BELLEVILLE, ONTARIO
Changes in δ¹⁵N values in hair can indicate stress or health issues.
research Herding Practices in the Keriya Valley (Xinjiang, China) During the Bronze and Iron Ages Using Stable Isotopic Analysis of Animal Hair
Ancient herders in the Keriya Valley fed their animals mainly C3 plants, with some C4 plant feeding possibly due to herd movement or seasonal changes.
research Adsorption and Elution of Cadmium on Hair
Cadmium sticks to hair differently for each person, and strong acid can mostly remove it.
research Evaluation of permissible level of soluble I-131 containing fission products for design of protective measures in livestock industry
Cows can safely graze after a nuclear incident if iodine exposure is managed, as doses below 30 Gy don't harm them long-term.
research An investigation into the action of transglutaminase on human hair
Transglutaminase does not modify human hair.
research Inhibition of 5α-Reductase Activity in SZ95 Sebocytes and HaCaT Keratinocytes In Vitro
The substance MK386 effectively blocked testosterone conversion and reduced cell growth in certain skin cells, but inhibiting 5α-reductase alone may not greatly improve acne.
research Inverse androgenic alopecia
A man with a new type of male pattern hair loss that affects the back of the head responded well to common hair loss treatments.
research Silver Oxide Based Nanoparticle Assisted Laser Desorption/Ionization Mass Spectrometry for the Detection of Low Molecular Weight Compounds
Silver oxide nanoparticles help detect small molecules effectively.
research Advances and Perspectives on Bioelectronic and Atomic Nanogenerators for Anticancer Therapy
Bioelectronic nanogenerators show promise for cancer treatment but need better understanding and development.
research A reflection on Fukushima nuclear disaster: View of Taiwan doctor
Public education on iodine use is crucial for radiation protection, especially for children.
research GC-MS determination of steroids related to androgen biosynthesis in human hair with pentafluorophenyldimethylsilyl–trimethylsilyl derivatisation
The method accurately measures certain steroids in human hair, showing different levels in males and females.
research Development of a new gas chromatography–mass spectrometry (GC–MS) methodology for the evaluation of 5α-reductase activity
A new method was developed to accurately measure enzyme activity related to prostate health.
research A rapid screening LC‐MS/MS method based on conventional HPLC pumps for the analysis of low molecular weight xenobiotics: application to doping control analysis
A quick method was developed to detect banned substances in urine for doping control.
research A fast liquid chromatographic/mass spectrometric screening method for the simultaneous detection of synthetic glucocorticoids, some stimulants, anti‐oestrogen drugs and synthetic anabolic steroids
A quick method effectively detects banned substances in urine.
research LC‐MS/MS‐based method for long‐term steroid profiling in human scalp hair
A new method accurately measures long-term steroid levels in human hair.
research Analysis of Mercury in Sequential Micrometer Segments of Single Hair Strands of Fish-Eaters
LA-ICP-MS can effectively track mercury exposure over time in hair.
research Highly Sensitive Simultaneous Measurement of Steroid Hormone in Human Serum by Liquid Chromatography-electrospray Ionization Tandem Mass Spectrometry
A new method accurately measures nine steroid hormones in human serum with high sensitivity.
research Proton Affinitive Derivatization for Highly Sensitive Determination of Testosterone and Dihydrotestosterone in Saliva Samples by LC-ESI-MS/MS
Using 5-butylpicolinate esters improves the sensitivity and reliability of detecting testosterone and dihydrotestosterone in saliva.
research Topological Markers for Subcellular Chemical Mapping using TOF-SIMS
TOF-SIMS improved chemical mapping in cells, confirming gunshot residue, tracking anti-tumor drugs, and identifying molecules in mosquitoes and wounds.
research SUN-195 Falsely Elevated Testosterone Levels: Role of LC-MS/MS in Reducing Unnecessary Testing
Using LC-MS/MS for hormone measurement can prevent false high testosterone results and avoid unnecessary tests.
research Gas chromatography/mass spectrometry based hair steroid profiling may reveal pathogenesis in hair follicles of the scalp
Analyzing hair with this method can help understand and monitor scalp conditions and treatment effects.
research LC-MS/MS improves screening towards 21-hydroxylase deficiency
LC-MS/MS is more reliable than immunoassays for diagnosing 21-hydroxylase deficiency.