Research Papers

Success! Publication of Vasalgel reversal study

Successful reversal of Vasalgel male contraceptive in rabbits For immediate release: Vasalgel’s prevention of sperm transport in the vas deferens for 14 months was reversed through an injection of sodium bicarbonate. Sperm concentration and motility returned to baseline. Results of a study of a promising new male contraceptive called VasalgelTM were published today in Basic… Read more


Successful application of Vasalgel™ male contraceptive in monkeys

Press Release Monday, Feb. 6, 2017 20:00 EST New contraceptive Vasalgel provides effective birth control in rhesus monkey groups for more than one year: report from California National Primate Research Center Results of a study of Vasalgel in rhesus macaques were published today in Basic and Clinical Andrology. Vasalgel is being developed by a social… Read more


Peer-reviewed publication of rabbit study results

If you’ve been following Vasalgel for some time, you already know that this new, long-acting contraceptive worked well in rabbits. But now it’s official! The results of the rabbit efficacy study were published this morning in Basic & Clinical Andrology, a peer-reviewed journal. The study revealed that rabbits had no sperm in their semen as… Read more


Ultrasound provides noninvasive hormone-sparing sterilization for male dogs

The optimal ultrasound treatment regime for dog sterilization was determined, providing an option for pet owners who want birth control without the long-term health and behavior changes resulting from traditional neutering An Italian research team led by Dr. Raffaella Leoci recently reported in Reproduction in Domestic Animals the best method for using ultrasound to sterilize… Read more


Nonsurgical treatment for enlarged prostate on the horizon

A recent study on dogs offers hope for treating enlarged prostate (technically known as benign prostatic hyperplasia or BPH). Recently published in the online version of The Prostate, researchers from the University of Bari, Italy report that pulsed electromagnetic field therapy – or PEMF – significantly reduced the size of the prostate starting after just one week of treatment…. Read more


Calchlorin, nonsurgical dog sterilization

Two long-term research studies pinpoint optimal sterilant for inexpensive, safe and effective nonsurgical neuter in dogs. The results have the potential for significant impact on methods to control pet overpopulation worldwide. The scientific studies were conducted by Dr. Raffaella Leoci, supported by Parsemus Foundation and published as open access articles in Acta Scandinavica Veterinaria. The authors… Read more