title: D-004 ameliorates phenylephrine-induced urodynamic changes and increased prostate and bladder oxidative stress in rats.
abstract: BACKGROUND
  Lower urinary tract symptoms (LUTS) in patients with benign prostatic hyperplasia (BPH) mainly depend on alpha1-adrenoreceptors (α1-ADR) stimulation, but a link with oxidative stress (OS) is also involved. D-004, a lipid extract of Roystonea regia fruits, antagonizes ADR-induced responses and produces antioxidant effects. The objective of this study was to investigate whether D-004 produce antioxidant effects in rats with phenylephrine (PHE)-induced urodynamic changes.
  
  
  METHODS
  Rats were randomized into eight groups (ten rats/group): a negative vehicle control and seven groups injected with PHE: a positive control, three treated with D-004 (200, 400 and 800 mg/kg) and three others with tamsulosin (0.4 mg/kg), grape seed extract (GSE) (250 mg/kg) and vitamin E (VE) (250 mg/kg), respectively.
  
  
  RESULTS
  Effects on urinary total volume (UTV), volume voided per micturition (VM), malondialdehyde (MDA) and carbonyl groups (CG) concentrations in prostate and bladder homogenates were study outcomes. While VM and UTV lowered significantly in the positive control as compared to the negative control group, the opposite occurred with prostate and bladder MDA and CG values. D-004 (200-800 mg/kg) increased significantly both VM and UTV, lowered significantly MDA in prostate and bladder homogenates, and reduced GC levels only in the prostate. Tamsulosin increased significantly VM and UTV, but unchanged oxidative variables. GSE and VE unchanged the UTV, whereas VE, not GSE, modestly but significantly attenuated the PHE-induced decrease of VM.
  
  
  CONCLUSIONS
  Single oral administration of D-004 (200-800 mg/kg) was the only treatment that ameliorated the urodynamic changes and reduced increased oxidative variables in the prostate of rats with PHE-induced prostate hyperplasia.
authors.affiliation: Pharmacology Department, Centre of Natural Products, National Centre for Scientific Research (CNIC), Havana City, Cuba.
authors.forename: Ambar
authors.initials: A
authors.lastname: Oyarzábal
authors.affiliation: Pharmacology Department, Centre of Natural Products, National Centre for Scientific Research (CNIC), Havana City, Cuba.
authors.forename: Yohani
authors.initials: Y
authors.lastname: Pérez
authors.affiliation: Pharmacology Department, Centre of Natural Products, National Centre for Scientific Research (CNIC), Havana City, Cuba.
authors.forename: Vivian
authors.initials: V
authors.lastname: Molina
authors.affiliation: Pharmacology Department, Centre of Natural Products, National Centre for Scientific Research (CNIC), Havana City, Cuba.
authors.forename: Rosa
authors.initials: R
authors.lastname: Mas
authors.affiliation: Pharmacology Department, Centre of Natural Products, National Centre for Scientific Research (CNIC), Havana City, Cuba.
authors.forename: Yazmin
authors.initials: Y
authors.lastname: Ravelo
authors.affiliation: Pharmacology Department, Centre of Natural Products, National Centre for Scientific Research (CNIC), Havana City, Cuba.
authors.forename: Sonia
authors.initials: S
authors.lastname: Jiménez
keywords: D-004; grape seed extract (GSE); oxidative stress (OS); urodynamic changes; vitamin E (VE)
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