Profiling of Skeletal Muscle and Adipose Tissue Depots in Men with Advanced Prostate Cancer Receiving Different Forms

Tahj A Blow1, Anirudh Murthy1, Rahul Grover1

  • 1Weill Cornell Medicine, New York, NY, USA.

PubMed
Abstract

Insights

Androgen deprivation therapy (ADT) significantly impacts body composition in prostate cancer patients. Newer agents like abiraterone acetate and enzalutamide cause greater muscle loss than standard treatments.

Area of Science:

  • Oncology
  • Endocrinology
  • Body Composition Analysis

Background:

  • Androgen deprivation therapy (ADT) is a standard treatment for prostate cancer.
  • ADT is known to cause adverse effects on body composition, including changes in adipose and skeletal muscle tissue.
  • The comparative effects of newer ADT agents (abiraterone acetate, enzalutamide) versus standard agents (aLHRHs) on body composition are not well understood.

Purpose of the Study:

  • To evaluate and compare the effects of different androgen deprivation therapy regimens on body composition in men with prostate cancer.
  • To assess changes in muscle mass, visceral adipose tissue (VAT), and subcutaneous adipose tissue (SAT) across various ADT treatments.

Main Methods:

  • Retrospective study of 229 prostate cancer patients on ADT (aLHRHs alone, or with abiraterone acetate/enzalutamide).
  • Body composition (muscle, VAT, SAT) assessed via computed tomography (CT) densitometry at baseline, 6 months, and 18 months.
  • Statistical analysis using two-way ANOVA with post hoc tests to determine within-group and between-group differences.

Main Results:

  • All ADT regimens led to significant short-term muscle volume loss, with abiraterone acetate and enzalutamide showing more rapid and pronounced effects.
  • Luteinizing hormone-releasing hormone agonists (aLHRHs) showed minimal changes in VAT but increased SAT.
  • Abiraterone acetate increased VAT initially but not long-term, and decreased SAT; enzalutamide decreased VAT and had minimal impact on SAT.

Conclusions:

  • ADT regimens significantly alter body composition, particularly muscle mass, in men with prostate cancer.
  • Abiraterone acetate and enzalutamide are associated with greater muscle mass reduction compared to aLHRHs.
  • Disparate effects on fat depots suggest distinct roles for androgens in regulating subcutaneous and visceral adipose tissue.