title: Effect of 2',4'-dichlorobenzamil hydrochloride, a Na(+)-Ca(2+) exchange inhibitor, on human spermatozoa.
abstract: The present study is aimed to investigate the contact spermicidal efficacy of 2',4'-dichlorobenzamil hydrochloride (DBZ), a Na(+)-Ca(2+) exchange inhibitor, on ejaculated human spermatozoa. The drug produced a dose- and time-dependent spermicidal action on human spermatozoa. A concentration of 4 mM produced total loss of sperm viability within 1 min of addition to total semen. On the other hand, a similar action on spermatozoa separated from semen was noted at 0.5 mM concentration. The loss of spermatozoal viability was accompanied with an increase in intracellular Ca(2+). Sperm revival testing with glucose suggested a spermicidal rather than a spermiostatic action.
authors.affiliation: Department of Pharmaceutical Sciences and Drug Research, Punjabi University, 147 002, Patiala, India.
authors.forename: P R
authors.initials: PR
authors.lastname: Reddy
authors.forename: A
authors.initials: A
authors.lastname: Patni
authors.forename: A
authors.initials: A
authors.lastname: Sharma
authors.forename: S
authors.initials: S
authors.lastname: Gupta
authors.forename: A K
authors.initials: AK
authors.lastname: Tiwary
mesh_terms: D000584:Amiloride / Q000031:analogs & derivatives / Q000494:pharmacology*; D002118:Calcium / Q000378:metabolism; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D005947:Glucose / Q000378:metabolism; D006801:Humans; D008297:Male; D019831:Sodium-Calcium Exchanger / Q000037:antagonists & inhibitors* / Q000378:metabolism; D013076:Sperm Count; D013081:Sperm Motility / Q000187:drug effects; D013089:Spermatocidal Agents / Q000494:pharmacology*; D013094:Spermatozoa / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D013997:Time Factors
chemical_list: D019831:Sodium-Calcium Exchanger; D013089:Spermatocidal Agents; D000584:Amiloride; C064515:2',4'-dichlorobenzamil amiloride; D005947:Glucose; D002118:Calcium