No abstract available.
Embryo Transfer* ; Embryonic Structures* ; Fertilization in Vitro* ; Pregnancy*

No abstract available.
Female ; Methotrexate* ; Pregnancy ; Pregnancy, Tubal*

No abstract available.
Female ; Follicle Stimulating Hormone* ; Gonadotropin-Releasing Hormone* ; Gonadotropins* ; Humans ; Ovarian Diseases*

No abstract available.

No abstract available.
Contraceptives, Oral* ; Fertilization in Vitro* ; Gonadotropins*

OBJECTIVE: Recently, we have demonstrated that embryonic ventral spinal cord motor neurons(ESMNs), transplanted into the distal stump of the axotomized tibial nerve, can grow into the denervated gastrocnemius muscle and form neuromuscular junctions. Our interest in study was to see whether these newly formed neuronal connections are physiologically active, and to electrophysiologically characterize the reinnervated motor units. MATERIAL AND METHODS: Three to eight weeks after transplantation rats were prepared for electrophysiological recording. Motor unit (MU) action potential and gross EMG were monitored. In eleven out of sixteen transplanted animals single unit and gross EMG were recorded after electrical stimulation of the transplant site. Total of 63 motor units were analyzed for their stimulus threshold (ST), latency and stimulus intensity, which is required to produce maximum firing. RESULTS: ST intensities activating MUs were significantly higher in transplanted animals than in controls. Maximum firing of MUs occurred at less than 1.2×T in the control but greater variation was observed in the transplanted animals ranging from 1.1×T to 1.6×T. No significant differences were found in the latencies of MU's firing following stimulation. MU firing was reversibly blocked by infusion of succinylcholine. CONCLUSION: we characterized the temporal, morphological and electrophysiological parameters of denervated skeletal muscle reinnervated by dissociated grafts of embryonic ventral spinal cord cells. MUs reinnervated by the embryonic motoneuronal transplant were physiologically active, with some properties similar to the MUs of the normal.
Action Potentials ; Animals ; Electric Stimulation ; Fires ; Mice ; Motor Neurons ; Muscle, Skeletal ; Neuromuscular Junction ; Neurons ; Rats ; Spinal Cord ; Succinylcholine ; Tibial Nerve ; Transplants

No abstract available.
Fertilization in Vitro* ; Gonadotropin-Releasing Hormone*

No abstract available.
Electroconvulsive Therapy ; Lacerations ; Tongue

The effect of labetalol on induced hypotension was studied in 13 patients undergoing major spine surgery. Hypotension was induced with initial dose of labetalol 0.4 mg/kg i.v. followed by 0.01 mg/kg/min i.v.infusion. BP, HR, and CVP were measured before, during, and after hypotension. Anesthesia was maintained with isoflurane (0.5-2 vol%) and N2O in 50% O2 supplemented by pancuronium. The time to systolic BP 75-85 mmHg or mean BP 55-65 mmHg was 18.5+/-2.8min and the time for systolic BP to recover 90% of prehypotensive value was 45.5+/-4.2 min. Heart rate was reduced signiTicantly after hypotension but remained stable at 80-90 beats/min thereafter. Central venous pressure showed no significant change irrespective of hypotension. The results suggest that combined use of fentanyl with labetalol or disuse of pancumnium may reduce the required dose of labetalol.
Anesthesia ; Central Venous Pressure ; Fentanyl ; Heart Rate ; Humans ; Hypotension* ; Isoflurane ; Labetalol* ; Pancuronium ; Spine*

No abstract available.
Oocytes* ; Pregnancy* ; Spermatozoa*