research Testosterone Is a Contraceptive and Should Not Be Used in Men Who Desire Fertility
Testosterone replacement therapy can prevent men from fathering children and should not be used by those wanting to stay fertile.
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150-180 / 327 results research Sex Differences And Hormonal Regulation Of Kv1 Potassium Channel Gene Expression In The Electric Organ: Molecular Control Of A Social Signal
Hormones and sex affect potassium channel gene expression in electric fish, influencing their communication signals.
research Isosexual Precocious Pseudopuberty Secondary to a Testosterone-Secreting Leydig Cell Testicular Tumor: True Isosexual Development Early After Surgery
A boy's early puberty caused by a testicular tumor returned to normal after surgery.
research Daily Subcutaneous Testosterone for Management of Testosterone Deficiency
Daily subcutaneous testosterone effectively restores testosterone levels in men.
research Ovarian and Adrenal Androgens and Their Link to High Human Chorionic Gonadotropin Levels: A Prospective Controlled Study
Women with a certain type of tumor had higher levels of pregnancy hormone and male hormones, which decreased after treatment.
research A Teenage Girl with Unexpected Pubertal Changes
The girl's unexpected pubic hair growth led to a diagnosis different from complete androgen insensitivity syndrome.
research Case Study: The Sexual, Physical, and Psychological Effects of Post-Finasteride Syndrome
Post-finasteride syndrome can cause lasting sexual, physical, and mental health issues with limited treatment options.
research Central Precocious Puberty Secondary to Peripheral Precocious Puberty Due to a Pineal Germ Cell Tumor: A Case and Review of Literature
A pineal tumor caused a boy's early puberty, which changed from peripheral to central after treatment.
research The Laboratory in the Multidisciplinary Diagnosis of Differences or Disorders of Sex Development (DSD)
Diagnosing sex development disorders requires combining medical history, physical exams, imaging, lab tests, and genetic data.
research Pharmacological Control of Reproduction in Dogs and Cats
Different drugs are used to manage breeding, prevent or end pregnancy, and treat reproductive issues in dogs and cats.
research Clomiphene Citrate and Human Chorionic Gonadotropin Are Both Effective in Restoring Testosterone in Hypogonadism: A Short-Course Randomized Study
Clomiphene citrate is a cheap and simple treatment for low testosterone that works as well as human chorionic gonadotropin, alone or combined, especially for men who want to keep their fertility.
research Alopecia Universalis Hair Regrowth with Hormones
A man with severe hair loss regrew hair after hormone treatment.
research Delayed Puberty: Diagnosis and Management of Congenital Idiopathic Hypogonadotropic Hypogonadism
A 19-year-old male with delayed puberty was successfully treated for a condition that prevents normal hormone production.
research The Influence of Non-Esterified Fatty Acids on Ovarian Androgen Production in IVF – Preliminary Results
High levels of fatty acids are linked to increased androgen production and inflammation in women with PCOS, which may affect IVF outcomes.
research New Hyaluronan-Based Biomatrix for 3D Follicle Culture Yields Functionally Competent Oocytes
A new gel helps grow mature eggs in a lab that can be fertilized and develop further.
research An Elevated Tumor Marker and Adrenarche in a Child Using Lavender Oil
Lavender oil use in a child may be linked to early puberty signs and elevated tumor marker levels.
research Metastatic Embryonal Cell Carcinoma with High Testosterone and Absence of Secondary Sexual Characteristics
Treatment restored normal sexual characteristics and blood condition in a patient with testicular cancer.
research Emerging Drugs for Hypogonadism
New treatments for male hypogonadism are easier to use and target specific tissues to reduce side effects.
research Alopecia Universalis and Kallman's Syndrome
A woman with Kallman's syndrome also developed alopecia universalis, a condition not previously linked to Kallman's.
research In Focus In HCB: The Role Of Cholesterol Transporter Proteins In The Human Hair Cycle, The Epithelial-To-Mesenchymal Transition And Primary Cilia In Urothelial Cancers, The Impact Of Ovarian Hormones And Choriogonadotropin On Endometrial Cell Polarity Before Implantation, And The Effects Of Epidermal Maturation And UV-Irradiation On The Protein rCLCA2 In Rodent Keratinocytes And Skin
The May issue discussed publishing agreements and four studies on cholesterol in hair, cancer cell changes, hormones in the uterus, and skin protein effects.
research Androgens in Women: Role in Androgen-Mediated Cutaneous Disorders
Androgens play a complex role in skin conditions like acne and hair loss in women, and normal blood levels don't always show true androgen status.
research Rates of Polycystic Ovary Syndrome Symptoms in Relatives of Patients With PCOS
Female relatives of PCOS patients have a higher chance of showing PCOS symptoms.
research Adult Onset Isolated Hypogonadotropic Hypogonadism: A Cause of Secondary Amenorrhea
A 23-year-old woman's missed periods were caused by a rare genetic disorder treated with hormone patches.
research An Unusual Cause of Primary Amenorrhea
The 18-year-old girl likely has a condition called müllerian agenesis, which caused her to not have a uterus and experience no menstrual periods.
research Androgen Biosynthesis and Gene Defects
Gene mutations can cause problems in male genital development.
research Case Study: Hereditary Cancer Genetic Testing in Unaffected Patients May Allow for Early Intervention and Aggressive Management
Genetic testing for cancer risk can lead to early and life-saving treatments in people without symptoms.
research Hirsutism: Evaluation and Treatment
Excessive hair growth can be assessed by history, exam, and blood tests, and treated with medication like dexamethasone, birth control pills, and spironolactone.
research Adverse Health Effects of Androgen Use
Using anabolic androgenic steroids can cause serious, lasting health problems in many parts of the body.
research Insights Learned from L457(3.43)R, an Activating Mutant of the Human Lutropin Receptor
The L457(3.43)R mutation in the human lutropin receptor causes increased activity and hormone insensitivity, leading to precocious puberty.
research A Case of Familial Male-Limited Precocious Puberty with a Novel Mutation
A boy with a rare form of early puberty caused by a new gene mutation responded well to treatment aimed at reducing testosterone and preserving adult height.