title: Effects of 8-Year Treatment of Long-Acting Testosterone Undecanoate on Metabolic Parameters, Urinary Symptoms, Bone Mineral Density, and Sexual Function in Men With Late-Onset Hypogonadism.
abstract: The long-term effects of long-acting testosterone undecanoate (TU) and androgen receptor CAG repeat lengths in Thai men with late-onset hypogonadism (LOH) have not been reported.
  
  
  
  To analyze the 8-year follow-up effects of intramuscular TU therapy on metabolic parameters, urinary symptoms, bone mineral density, and sexual function and investigate CAG repeat lengths in men with LOH.
  
  
  
  We reviewed the medical records of 428 men with LOH who had been treated with TU and 5 patients were diagnosed with prostate cancer during TU therapy. There were 120 patients (mean age = 65.6 ± 8.9 years) who had 5 to 8 years of continuous TU supplementation and sufficiently completed records for analysis. Genomic DNA was extracted from peripheral blood and the CAG repeat region was amplified by polymerase chain reaction. Fragment analysis, sequencing, electropherography, and chromatography were performed.
  
  
  
  The main outcome measure was dynamic parameter changes during testosterone supplementation.
  
  
  
  TU did not improve all obesity parameters. A statistically significant decrease was found in waist circumference, percentage of body fat, glycated hemoglobin, cholesterol, low-density lipoprotein, and International Prostate Symptom Score (P < .05). TU did not produce differences in body mass index, high-density lipoprotein, triglyceride, or the Aging Male Symptoms score from baseline. However, a statistically significant increase was found in the level of testosterone, prostate-specific antigen, hematocrit, International Index of Erectile Function score, and vertebral and femoral bone mineral density (P < .05). No major adverse cardiovascular events or prostate cancer occurred during this study. The CAG repeat length was 14 to 28 and the median CAG length was 22. There was no association between CAG repeat length and any of the anthropometric measurements.
  
  
  
  Long-term TU treatment in men with LOH for up to 8 years appears to be safe, tolerable, and effective in correcting obesity parameters.
authors.affiliation: Division of Urology, Department of Surgery, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand. Electronic address: sompolpermpong@gmail.com.
authors.forename: Sompol
authors.initials: S
authors.lastname: Permpongkosol
authors.affiliation: Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Kalayanee
authors.initials: K
authors.lastname: Khupulsup
authors.affiliation: Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Supatra
authors.initials: S
authors.lastname: Leelaphiwat
authors.affiliation: Division of Nursing Service, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Sarawan
authors.initials: S
authors.lastname: Pavavattananusorn
authors.affiliation: Center of Academic Affairs and Innovation, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Supranee
authors.initials: S
authors.lastname: Thongpradit
authors.affiliation: Center of Academic Affairs and Innovation, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Thanom
authors.initials: T
authors.lastname: Petchthong
mesh_terms: D000368:Aged; D000728:Androgens / Q000627:therapeutic use*; D015519:Bone Density / Q000187:drug effects; D004334:Drug Administration Schedule; D005500:Follow-Up Studies; D006801:Humans; D007006:Hypogonadism / Q000188:drug therapy*; D007989:Libido / Q000187:drug effects; D008075:Lipoproteins, HDL / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000188:drug therapy; D009948:Orgasm / Q000187:drug effects; D017060:Patient Satisfaction; D017430:Prostate-Specific Antigen / Q000378:metabolism; D011471:Prostatic Neoplasms / Q000150:complications; D011944:Receptors, Androgen / Q000378:metabolism; D012735:Sexual Dysfunction, Physiological / Q000188:drug therapy; D020018:Sexual Dysfunctions, Psychological / Q000188:drug therapy; D013739:Testosterone / Q000031:analogs & derivatives* / Q000378:metabolism / Q000627:therapeutic use; D014280:Triglycerides / Q000378:metabolism; D055105:Waist Circumference / Q000187:drug effects
chemical_list: C410798:AR protein, human; D000728:Androgens; D008075:Lipoproteins, HDL; D011944:Receptors, Androgen; D014280:Triglycerides; D013739:Testosterone; D017430:Prostate-Specific Antigen; C010792:testosterone undecanoate
keywords: Androgen Receptor; Late-Onset Hypogonadism; Metabolic Syndrome; Obesity; Prostate Cancer; Testosterone