To clarify effect of postbreeding intramuscular administration of deslorelin on mares, plasma LH and progesterone concentrations and conception rate were evaluated. In Experiment 1, deslorelin, buserelin, or a placebo was administered on day 9 (day 0=day of last breeding or AI). Plasma samples were collected daily from days 6 to 15, and additional samples were taken after treatment. There was a...

We evaluated the usefulness of magnetic resonance imaging (MRI) for assessing the response of patients with endometriomas to medical therapy. MRI was performed before and after treatment in 20 consecutive patients with at least one endometrioma with a maximal diameter >10 mm diagnosed by laparoscopy who received 900 microg of buserelin acetate daily for 6 months. Patients were categorized as go...

Chaperone members of the protein disulfide isomerase family can catalyze the thiol-disulfide exchange reaction with pairs of cysteines. There are 14 protein disulfide isomerase family members, but the ability to catalyze a thiol disulfide exchange reaction has not been demonstrated for all of them. Human endoplasmic reticulum protein chaperone thio-oxidoreductase (ERp18) shows partial oxidative...

Gonadotropin-releasing hormone (GnRH) is present in nervus terminalis neurons in chemosensory nerve fascicles in vertebrates. In rodents, the majority of GnRH fibers are located within vomeronasal nerves. We have shown that GnRH can alter vomeronasal receptor neuron responses to odors. In this study, using prairie voles, we tested the hypotheses that (i) GnRH-immunoreactive (-ir) neurons projec...

The aim of the study was to evaluate the economic impact of Doublesynch protocol by improving fertility in postpartum buffaloes. The experiment was conducted in 200 lactating buffaloes at dairy farm, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab during summer months (April to July). The buffaloes were divided into 2 groups. The buffaloes in group I (Doublesynch grou...

AIM Bovine ovarian cysts are a common cause of economic loss in modern dairy herds. The objective of the present study was to evaluate the reproductive responses to three protocols using hCG, GnRH and cloprostenol when the definite diagnosis of the type of ovarian cyst is/is not possible in dairy cows. MATERIALS AND METHODS A total of 144 lactating dairy cows with ovarian cysts were divided i...

Three male Beagles with low plasma luteinizing hormone and testosterone levels and spermatogenic dysfunction (SD-dogs) were given 3 weekly subcutaneous injections of a gonadotropin-releasing hormone analogue (Buserelin; GnRH-AB). The plasma T level of all of the SD-dogs increased and peaked at 4-6 weeks after the first injection. The total number of sperm and the sperm motility of the three SD-...

Long-acting synthetic luteinising hormone-releasing hormone agonists have become the mainstay for androgen-deprivation therapy, because they avoid the physical and psychological discomfort associated with orchidectomy and lack the potential cardiotoxicity associated with estrogens such as diethylstilbestrol. Currently available luteinising hormone-releasing hormone agonist analogues include leu...

The Southampton In Vitro Fertilisation Programme was established in 1986. Since that time the programme has maintained a clinical pregnancy rate of over 25 per oocyte retrieval. Embryos in excess of requirements for fresh transfer have been cryopreserved using controlled rate freezing and Propanediol as a cryoprotectant. Review of the first 75 frozen embryo transfers in natural or clomid induce...

W e present a case of recurrent auricular chondritis, which developed after two injections of a luteinising hormone-releasing hormone (LH-RH) analogue buserelin combined with oral treatment of a pure antiandrogen bicalutamide (Casodex). The patient was treated successfully with a continuous moderate dose of corticosteroids together with azathioprine and methotrexate. Complete repair of the defo...