research Time Lags Between Various Maturity Measures and Spermarche
Certain maturity signs appear before and after the first release of sperm in boys.
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research Exposure of Xenopus Laevis Tadpoles to Finasteride, an Inhibitor of 5-Alpha Reductase Activity, Impairs Spermatogenesis and Alters Hypophyseal Feedback Mechanisms
Finasteride exposure harms tadpole reproduction and hormone balance.
research Case Report: Disorder of Sex Development 46, XY with Proximal Hypospadias in a 10-Year-Old Twin Boy
A 10-year-old boy with abnormal genital development had surgery and tests to find the cause and plan treatment.
research Reproductive Seasonality and Maturation Throughout the Complete Life-Cycle in the Mouflon Ram (Ovis Musimon)
Mouflon rams mature gradually with changes in body, horns, and hormones linked to age and seasons, reaching full sexual maturity well after puberty.
research The Melanocyte Photosensory System in Human Skin
Human skin's melanocytes respond to light by changing shape, producing pigments and hormones, which may affect sleep patterns.
research Consequences of Anabolic-Androgenic Steroid Abuse in Males: Sexual and Reproductive Perspective
Using anabolic-androgenic steroids can harm men's reproductive health and increase the risk of heart problems and death.
research Rooster Feathering, Androgenic Alopecia, And Hormone-Dependent Tumor Growth: What Is In Common?
Sex hormones affect hair and feather growth and may help manage alopecia and hormone-dependent cancers.
research Function and Underlying Mechanisms of Seasonal Color Molting in Mammals and Birds: What Keeps Them Changing in a Warming World?
Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.
research Melatonin and the Hair Follicle
Melatonin helps regulate hair growth and protects the hair follicle from stress.
research An Integrative View of Mammalian Seasonal Neuroendocrinology
The article concludes that better understanding gene regulation related to seasonal changes can offer insights into the mechanisms of seasonal timing in mammals.
research Adverse Effects of Common Medications on Male Fertility
Some common medications can harm male fertility, but many effects can be reversed.
research Potential Adverse Effects of Long-Term Testosterone Therapy
Long-term testosterone therapy can cause hormone suppression, affect prostate and heart health, and alter physical characteristics, but does not increase prostate cancer risk and needs more research for full risk assessment.
research The Modulatable Stem Cell Niche: Tissue Interactions During Hair and Feather Follicle Regeneration
The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.
research The Control of Hair Growth: An Overview
Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.
research A Combined Regimen of Cyproterone Acetate and Testosterone Enanthate as a Potentially Highly Effective Male Contraceptive
The combination of cyproterone acetate and testosterone enanthate is highly effective in preventing sperm production and could be a good reversible male contraceptive.
research Inherited Ichthyosis: Syndromic Forms
Understanding the genetics of rare inherited ichthyosis syndromes is key for better treatments and genetic counseling.
research Expression Patterns of MITF During Human Cutaneous Embryogenesis: Evidence for Bulge Epithelial Expression and Persistence of Dermal Melanoblasts
Melanocyte precursors in human fetal skin follow a specific migration pattern and some remain in the skin's deeper layers.
research The Role of the Adrenal Glands in Regulating Onset of Winter Fur Growth in Mink (Mustela Vison)
Adrenal glands delay the start of winter fur growth in mink.
research Long Noncoding RNA and Gene Expression Analysis of Melatonin-Exposed Liaoning Cashmere Goat Fibroblasts Indicating Cashmere Growth
Melatonin treatment increases a specific RNA in goat cells that boosts cashmere growth.
research Environmental Influences on the Hair Follicle
Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.
research Spontaneous Fertility in a Male Patient with Testotoxicosis Despite Suppression of FSH Levels
A man with testotoxicosis was fertile despite low FSH levels, suggesting high testosterone may allow sperm production without FSH.
research The Effect of Melatonin Treatment on Fur Maturation Period and Hair Follicle Cycle in Growing Chinchillas
Melatonin treatment speeds up fur maturation and changes the hair growth cycle in young chinchillas.
research Melatonin and Fleece Growth in Australian Cashmere Goats
Melatonin implants affect the growth and pattern of cashmere goat fleece depending on the time of year they are given.
research Restoration of Spermatogenesis and Male Fertility Using an Androgen Receptor Transgene
Scientists restored fertility in male mice lacking a key fertility gene by using a modified gene.
research Sertolioma in a Canadian Husky: Relationship Between Tumor, Hormones, Neurons, and Skin
Removing a testicular tumor in a dog reduced its aggressive behavior and skin problems.
research Omega-6 Highly Unsaturated Fatty Acids in Leydig Cells Facilitate Male Sex Hormone Production
Omega-6 fats in certain cells boost male hormone production.
research Effect of Finasteride Particle Size Reduction on Its Pharmacokinetic, Tissue Distribution, and Cellular Permeation
Smaller finasteride particles increase effectiveness in treating hair loss.
research Local and Systemic Reduction by Topical Finasteride or Flutamide of Hamster Flank Organ Size and Enzyme Activity
Topical finasteride and flutamide reduce gland size and enzyme activity, with flutamide being more potent, potentially treating acne, seborrhea, hirsutism, and androgenic alopecia.
research Environmental Factors and Puberty Timing: Expert Panel Research Needs
Chemicals and body size might change when puberty starts and progresses, but more research is needed to confirm this.
research Total Prostate Volume as Risk Factor for Semen Pathologies in Aging Male
Larger prostate size in older men may be linked to poorer semen quality and fertility issues.