research Workplace Drug Testing Using Hair Samples
Hair testing is a reliable method for detecting workplace drug use when done with proper sample preparation and confirmation.
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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 Role of Melatonin in Neuroectodermal-Mesodermal Interactions: The Hair Follicle Synthesizes Melatonin and Expresses Functional Melatonin Receptors
Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.
research Neuroactive Steroid Levels Are Modified in Cerebrospinal Fluid and Plasma of Post-Finasteride Patients Showing Persistent Sexual Side Effects and Anxious/Depressive Symptomatology
Finasteride use changes brain chemicals, causing lasting sexual issues and anxiety/depression.
research Studies on Neurosteroids XXV: Influence of a 5α-Reductase Inhibitor, Finasteride, on Rat Brain Neurosteroid Levels and Metabolism
Finasteride almost fully depletes allopregnanolone in rat brains and enhances 20α-DHP, but doesn't change 3α-DHP levels.
research Neuroactive Steroid Levels and Psychiatric and Andrological Features in Post-Finasteride Patients
Post-finasteride patients show changed neuroactive steroid levels, possibly causing erectile dysfunction and depression.
research Chemical Profiling and Quantitation of Bioactive Compounds in Platycladi Cacumen by UPLC-Q-TOF-MS/MS and UPLC-DAD
Researchers identified new compounds in Platycladi Cacumen and found variations in its flavonoid content, which could aid in its quality control.
research Doping-Control Analysis of the 5α-Reductase Inhibitor Finasteride: Determination of Its Influence on Urinary Steroid Profiles and Detection of Its Major Urinary Metabolite
Finasteride affects urinary steroid profiles and can potentially hide steroid abuse in sports drug testing.
research Intravaginal Testosterone Improves Sexual Satisfaction and Vaginal Symptoms Associated With Aromatase Inhibitors
Intravaginal testosterone cream improves sexual satisfaction and reduces vaginal discomfort in postmenopausal women on breast cancer treatment without affecting hormone levels.
research Prevalence of Hyperandrogenic States in Late Adolescent and Young Women: Epidemiological Survey on Italian High-School Students
Many young Italian women have hyperandrogenic disorders like PCOS, which are linked to age, body weight, and insulin resistance.
research New Steps Forward in the Neuroactive Steroid Field
Neuroactive steroids could become safe, effective treatments with more understanding of their complex brain actions and metabolism.
research The 5α-Reductase Inhibitor Dutasteride but Not Finasteride Protects Dopamine Neurons in the MPTP Mouse Model of Parkinson’s Disease
Dutasteride protects dopamine neurons in Parkinson's mice, but Finasteride doesn't.
research In Vivo Investigation in Pigs of Intestinal Absorption, Hepatobiliary Disposition, and Metabolism of the 5α-Reductase Inhibitor Finasteride and the Effects of Coadministered Ketoconazole
Ketoconazole increases finasteride's effectiveness and lifespan in the body.
research Sublingual Tofacitinib for Alopecia Areata: A Roll-Over Pilot Clinical Trial and Analysis of Pharmacokinetics
The trial showed that a new under-the-tongue treatment for severe hair loss was somewhat effective in a small group of people.
research Untargeted Metabolomics and Steroid Signatures in Urine of Male Pattern Baldness Patients After Finasteride Treatment for a Year
Finasteride treatment changes urine metabolomics and steroid signatures, potentially monitoring effectiveness but may cause sexual side effects.
research Altered Methylation Pattern of the SRD5A2 Gene in the Cerebrospinal Fluid of Post-Finasteride Patients: A Pilot Study
Finasteride affects SRD5A2 gene pattern, possibly causing lasting side effects.
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 Hyperandrogenism, Elevated 17-Hydroxyprogesterone and Its Urinary Metabolites in a Young Woman with Ovarian Steroid Cell Tumor, Not Otherwise Specified: Case Report and Review of the Literature
A young woman's symptoms suggested PCOS, but tests and surgery confirmed and treated a rare ovarian tumor, resolving her condition.
research Inhibition of 5α-Reductase Alters Pregnane Metabolism in the Late Pregnant Mare
Inhibiting 5α-reductase increases progesterone levels in late pregnant mares.
research Pharmacokinetic-Pharmacodynamic Modeling Approach for Dose Prediction of the Optimal Long-Acting Injectable Formulation of Finasteride
Optimal long-acting finasteride injection dose found: 16.8 mg, effective for one month.
research Prenatal Androgenization of Ewes as a Model of Hirsutism in Polycystic Ovary Syndrome
Prenatally androgenized ewes can model increased hair diameter in women with PCOS.
research Evidence of the Moderating Role of Hair Cortisol and Hair Cortisone in the Relationship Between Work Stress and Depression Symptoms Among Chinese Fishermen
Hair cortisol and cortisone levels may affect how work stress influences depression in Chinese fishermen.
research Serial Hydrolysis for the Simultaneous Analysis of Catecholamines and Steroids in the Urine of Patients with Alopecia Areata
A new method was created to analyze certain chemicals in the urine of alopecia areata patients, revealing they have higher metanephrine content. This method can also be used for other related diseases.
research Segmental Hair Analysis as a Retrospective Testosterone Diary: Possibilities and Pitfalls
Segmental hair analysis can track testosterone over time but needs adjustments for sex, hair color, and washing frequency.
research Segmental Hair Analysis - A Retrospective Testosterone Diary?
Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.
research Androgens and Female Sexual Function and Dysfunction—Findings From the Fourth International Consultation of Sexual Medicine
Androgens play a role in female sexual function, and testosterone therapy can help women with low sexual desire, but more research is needed on treatments and long-term safety.
research Diagnostic Approach to Low-Renin Hypertension
Recent genetic insights show that low-renin hypertension includes a range from essential hypertension to secondary or familial forms, affecting diagnosis and treatment.
research High Circulating Estrone and Low Testosterone Correlate with Adverse Clinical Outcomes in Men with Advanced Liver Disease
Men with advanced liver disease and high oestrone and low testosterone levels have worse health outcomes.
research Simultaneous Determination of Quercitrin, Afzelin, Amentoflavone, Hinokiflavone in Rat Plasma by UFLC-MS-MS and Its Application to the Pharmacokinetics of Platycladus Orientalis Leaves Extract
Researchers developed a method to measure plant compounds in rat blood and found they are quickly absorbed and eliminated within 36 hours.
research Proteins Observed in Scalp Hair from Preschool Children
Mothers have more hair proteins than their children, with age-related differences in protein patterns, and some proteins in hair could indicate early childhood development.