title: A prospective, randomized, single - blind study comparing intraplaque injection of thiocolchicine and verapamil in Peyronie's Disease: a pilot study.
abstract: OBJECTIVE
  To compare the response to tiocolchicine and verapamil injection in the plaque of patients with Peyronie's disease.
  
  
  METHODS
  Prospective, single-blind, randomized study, selecting patients who have presented Peyronie's disease for less than 18 months. Thiocolchicine 4mg or verapamil 5mg were given in 7 injections (once a week). Patients who had received any treatment for Peyronie's disease in the past three months were excluded. The parameters used were the International Index of Erectile Function (IIEF-5) score, analysis of the curvature on pharmaco-induced erections and size of the plaque by ultrasonography.
  
  
  RESULTS
  Twenty-five patients were randomized, 13 received thiocolchicine and 12 were treated with verapamil. Both groups were statistically similar. The mean curvature was 46.7º and 36.2º before and after thiocolchicine, respectively (p=0.019) and 50.4º and 42.08º before and after verapamil, respectively (p=0.012). The curvature improved in 69% of patients treated with thiocolchicine and in 66% of those who received verapamil. Regarding sexual function, there was an increase in the IIEF-5 from 16.69 to 20.85 (p=0.23) in the thiocolchicine group. In the verapamil group the IIEF-5 score dropped from 17.50 to 16.25 (p=0.58). In the thiocolchicine group, the plaque was reduced in 61% of patients. In the verapamil group, 8% presented decreased plaque size. No adverse event was associated to thiocolchicine.
  
  
  CONCLUSIONS
  The use of thiocolchicine in Peyronie's disease demonstrated improvement on penile curvature and reduction in plaque size. Thiocolchicine presented similar results to verapamil in curvature assessment. No significant side effects were observed with the use of tiocolchicine.
authors.affiliation: Departamento de Urologia, Hospital Ipiranga, São Paulo, Brasil.
authors.forename: L
authors.initials: L
authors.lastname: Toscano
authors.affiliation: Departamento de Urologia, Hospital Ipiranga, São Paulo, Brasil.
authors.forename: M V
authors.initials: MV
authors.lastname: Rezende
authors.affiliation: Departamento de Urologia, Hospital Ipiranga, São Paulo, Brasil.
authors.forename: L F
authors.initials: LF
authors.lastname: Mello
authors.affiliation: Departamento de Urologia, Hospital Ipiranga, São Paulo, Brasil.
authors.forename: D
authors.initials: D
authors.lastname: Paulillo
authors.affiliation: Departamento de Urologia, Hospital Ipiranga, São Paulo, Brasil.
authors.forename: S
authors.initials: S
authors.lastname: Glina
mesh_terms: D000328:Adult; D000368:Aged; D003078:Colchicine / Q000008:administration & dosage / Q000031:analogs & derivatives*; D006801:Humans; D015552:Injections, Intralesional; D008297:Male; D008875:Middle Aged; D010410:Penile Erection / Q000187:drug effects; D010411:Penile Induration / Q000188:drug therapy*; D011446:Prospective Studies; D015203:Reproducibility of Results; D016037:Single-Blind Method; D013997:Time Factors; D016896:Treatment Outcome; D014665:Vasodilator Agents / Q000008:administration & dosage*; D014700:Verapamil / Q000008:administration & dosage*
chemical_list: D014665:Vasodilator Agents; C014856:thiocholchicine; D014700:Verapamil; D003078:Colchicine
keywords: Penile Induration; Penis; Verapamil