Table 7

Compilation of in vivo studies showing effects of glycineB site agonists or partial agonists, indicating that the glycineBsites are not saturated

EffectAgents used (route of administration)References
Analgesia after unilateral ligation of sciatic nerveGlycine (intrathecal) Simpson et al., 1997
Enhancement of tail flick response d-Serine (intrathecal) Kolhekaret al., 1994
Anxiogenic response d-Serine, glycine (PAG)7-a Schmittet al., 1995
Pressor responsesGlycine,d-serine (caudal ventrolateral medulla) Kapoor et al., 1996
Enhancement of NMDA-induced hypertensionGlycine (PAG) Berrino et al., 1992
Enhancement of NMDA receptor-dependent cGMP stimulation in the cerebellumGlycine (systemic, cisterna magna) Danysz et al., 1987, 1989c
Enhancement of cGMP production in the cerebellum d-Cycloserine (i.p.) (at high doses, antagonism), d-serine (i.p.) Wood et al.,1989; Emmett et al., 1991
Enhancement of NMDA-induced elevation of cGMP in the cerebellum d-Serine (local, microdialysis) Vallebuona and Raiteri, 1995; Fedele et al., 1997
Enhancement of cGMP production in the hippocampus d-Serine (local, microdialysis) Uckeleet al., 1989
Enhancement of NMDA-induced convulsions in rats at postnatal day 7 d-Serine (i.p.) Peeters and Vanderheyden, 1992
Enhancement of NMDA-induced convulsions d-Serine (i.c.v.) Singh et al., 1990c, 1991
Potentiation of strychnine-induced convulsionsGlycine; AP5-sensitive (intrathecal) Larson and Beitz, 1988
Depression of positive waves in the hippocampus; electrophoresisGlycine (local) Erdemli et al., 1990
Enhancement of NMDA responses in the spinal cord and dorsal horn; electrophoresisGlycine (local) Budai et al., 1992
Enhancement of NMDA responses in the cerebellum; electrophoresis (dependent on the firing rate)Glycine (local) Netzeband et al., 1990
Enhancement of NMDA responses in the visual cortex; electrophoresis d-Serine (local) Czepita et al., 1996
Enhancement of NMDA responses in the red nucleus; electrophoresisGlycine, d-serine (local) Goldsteinet al., 1989
Enhancement of NMDA responses; electrophoresisGlycine, d-serine (red nucleus) Goldstein et al., 1989
Enhancement of field potential in hippocampus (DG) d-Cycloserine (local) Pitkanen et al., 1994
Enhancement of field potential in DG d-Cycloserine (hippocampus)
Enhancement of NMDA-induced negative field potential in the hippocampus (CA1); electrophoresisGlycine (local) Dalkaraet al., 1992
Enhancement of synaptic responses in the red nucleus; electrophoresis d-Serine (local), glycine produced inhibition Davies et al., 1994
Enhancement of eye blink response learning d-Cycloserine, monoclonal antibody to glycine site Thompson et al., 1992
Enhancement of LTP in CA1 d-Serine (hippocampus) Thiels et al., 1992
Enhancement of spatial learning d-Cycloserine (i.p.) Monahanet al., 1989b; Sirvio et al., 1992; Baxteret al., 1994; Zajaczkowski and Danysz, 1997
Improvement in word recall test in humans d-Cycloserine (subcutaneous) Wesnes et al., 1991
Enhancement of LTP in the hippocampus (CA1) in microcephalic rats d-Serine (local) Ramakers et al., 1993
Attenuation of PCP-induced hyperlocomotion d-Serine,d-alanine (i.c.v.) Tanii et al., 1991, 1994
Attenuation of (+)MK-801 and PCP stereotypy d-Serine, glycine (i.c.v.) Contreras, 1990
Attenuation of PCP-induced hyperlocomotionGlycine (i.p.) Toth and Lajtha, 1986
Enhancement of noradrenaline release in the red nucleus of stria terminalis d-Serine (local) Aliaga et al., 1995
Enhancement of NMDA-stimulated dopamine release in the striatumGlycine (local), microdialysis Krebs et al., 1989; Martinez-Fong et al., 1992
Enhancement of NMDA-stimulated glutamate release in the striatum d-Serine (local), microdialysis Bustoset al., 1992
Enhancement of ischemia-induced damageGlycine, serine (i.c.v.) Dalkara et al.,1990
  • 7-a PAG, periaqueductal gray; DG, dorsal ganglia.