... such a release. We developed a multiple guide cannula assembly (MGCA) to sample repetitively discrete areas of the ewe ME, using removable push-pull cannula (PPC) probes. The MGCA is attached to the skull over the ME using stereotaxic surgery. A specific guide cannula of the assembly (1 of 48 guides) located...

... and overall mean LHRH release of castrate males bearing a push-pull cannula within the hypothalamus. These divergent results have generated a new thesis regarding the role of gonadal steroids upon the LHRH pulse generator. This thesis submits that following castration there is an increased frequency...

... the estrous cycle, LHRH levels were higher than those reported from previous work using a push-pull cannula placed in the mediobasal hypothalamus. A significant increase in LHRH input to the anterior pituitary was obtained in proestrus (Pro), though the magnitude of increment was different among animals...

...Joachim Demling; Eberhard Fuchs; Marion Baumert; Wolfgang Wuttke T he push-pull cannula technique was used to evaluate the role of the medial preoptic/anterior hypothalamic area (MPO) in regulating pituitary luteinizing hormone (LH) and prolactin release. The concentrations of the three...

.... Median eminence TRH Cold exposure Push-pull cannula Abstract. IR-TRH release in the median eminence was directly estimated in conscious rats during the first 130 min of ex­ posure to cold (4 °C), using a push-pull cannulation. A three-fold increase in IR-TRH release was observed, with a peak...