32
J.M. DiPirro, M.B. Kristal / Brain Research 1014 (2004) 22-33
tal distention: pregnancy-induced analgesia to visceral stimulation,
Anesthesiology 74 (1991) 927-933.
[32] I.F. James, A. Goldstein, Site-directed alkylation of multiple opioid
receptors: I. Binding selectivity, Mol. Pharmacol. 25 (1984) 337 - 342.
[33] A. Jayaram, P. Singh, H. Carp, SCH 32615, an enkephalinase inhib-
itor, enhances pregnancy-induced analgesia in mice, Anesth. Analg.
80 (1995) 944 - 948.
[34] F. Jenck, M. Bozarth, R.A. Wise, Contraversive circling induced by
ventral tegmental microinjections of morphine and [d-Pen2,d-
Pen5]enkephalin, Brain Res. 450 (1988) 382 - 386.
[35] K.L. Kepler, B. Kest, J.M. Kiefel, M.L. Cooper, R.J. Bodnar, Roles of
gender, gonadectomy and estrous phase in the analgesic effects of
intracerebroventricular morphine in rats, Pharmacol. Biochem. Behav.
34 (1989) 119 - 127.
[36] J.M. Kiefel, G.C. Rossi, R.J. Bodnar, Medullary mu and delta opioid
receptors modulate mesencephalic morphine analgesia in rats, Brain
Res. 624 (1993) 151 - 160.
[37] H.W. Kosterlitz, Opioid peptides and their receptors, Proc. R. Soc.
Lond., B Biol. Sci. 225 (1985) 27-40.
[38] M.B. Kristal, Placentophagia: a biobehavioral enigma (or De gustibus
non disputandum est), Neurosci. Biobehav. Rev. 4 (1980) 141 - 150.
[39] M.B. Kristal, Enhancement of opioid-mediated analgesia: a solution
to the enigma of placentophagia, Neurosci. Biobehav. Rev. 15 (1991)
425 - 435.
[40] M.B. Kristal, J.F. Whitney, L.C. Peters, Placenta on pups’ skin accel-
erates onset of maternal behavior in nonpregnant rats, Anim. Behav.
29 (1981) 81-85.
[41] M.B. Kristal, A.C. Thompson, P. Abbott, Ingestion of amniotic fluid
enhances opiate analgesia in rats, Physiol. Behav. 38 (1986) 809 - 815.
[42] M.B. Kristal, A.C. Thompson, S.B. Heller, B.R. Komisaruk, Placenta
ingestion enhances analgesia produced by vaginal/cervical stimulation
in rats, Physiol. Behav. 36 (1986) 1017 - 1020.
[43] M.B. Kristal, P. Abbott, A.C. Thompson, Dose-dependent enhance-
ment of morphine-induced analgesia by ingestion of amniotic fluid
and placenta, Pharmacol. Biochem. Behav. 31 (1988) 351 - 356.
[44] M.B. Kristal, J.A. Tarapacki, D. Barton, Amniotic fluid ingestion
enhances opioid-mediated but not nonopioid-mediated analgesia,
Physiol. Behav. 47 (1990) 79-81.
[45] M.B. Kristal, A.C. Thompson, P. Abbott, J.M. DiPirro, E.F. Ferguson,
J.C. Doerr, Amniotic-fluid ingestion by parturient rats enhances preg-
nancy-mediated analgesia, Life Sci. 46 (1990) 693 - 698.
[46] R.A. Lahti, M.M. Mickelson, J.M. McCall, P.F. Von Voightlander,
[3H]U-69593 a highly selective ligand for the opioid kappa receptor,
Eur. J. Pharmacol. 109 (1985) 281 - 284.
[47] L.G. Latimer, P. Duffy, P.W. Kalivas, Mu opioid receptor involvement
in enkephalin activation of dopamine neurons in the ventral tegmental
area, J. Pharmacol. Exp. Ther. 241 (1987) 328 - 337.
[48] R. Maldonado, J. Feger, M.C. Fournie-Zaluski, B.P. Roques, Differ-
ences in physical dependence induced by selective A or y opioid
agonists and by endogenous enkephalins protected by peptidase
inhibitors, Brain Res. 520 (1990) 247 - 254.
[49] P.E. Mann, C.H. Kinsley, R.S. Bridges, Opioid receptor-subtype in-
volvement in maternal behavior in lactating rats, Neuroendocrinology
53 (1991) 487-492.
[50] A. Mansour, C.A. Fox, S. Burke, F. Meng, R.C. Thompson, H. Akil,
S.J. Watson, Mu, delta, and kappa opioid receptor mRNA expression
in the rat CNS: an in situ hybridization study, J. Comp. Neurol. 350
(1994) 412 - 438.
[51] A. Mansour, C.A. Fox, H. Akil, S.J. Watson, Opioid-receptor mRNA
expression in the rat CNS: anatomical and functional implications,
Trends Neurosci. 18 (1995) 22-29.
[52] H.W. Matthes, R. Maldonado, F. Simonin, O. Valverde, S. Slowe, I.
Kitchen, K. Befort, A. Dierich, M. Le Meur, P. Dolle, E. Tzavara, J.
Hanoune, B.P. Roques, B.L. Kieffer, Loss of morphine-induced an-
algesia, reward effect and withdrawal symptoms in mice lacking the
mu-opioid-receptor gene, Nature 383 (1996) 759 - 760.
[53] V.M. Medina, M.E. Dawson-Basoa, A.R. Gintzler, 17-h-Estradiol and
progesterone positively modulate spinal cord dynorphin: relevance to
the analgesia of pregnancy, Neuroendocrinology 58 (1993) 310 - 315.
[54] K.G. Meecham, S.J. Boyle, J.C. Hunter, J. Hughes, An in vitro profile
of activity for the (+) and ( —) enantiomers of spiradoline and
PD117302, Eur. J. Pharmacol. 173 (1989) 151 - 157.
[55] M.E. Meyer, M.E. Meyer, Behavioral effects of A-opioid peptide
agonists DAMGO, DALDA, and PL017 on locomotor activities,
Pharmacol. Biochem. Behav. 46 (1993) 391 - 395.
[56] M.E. Meyer, M.E. Meyer, Behavioral effects of opioid peptide ago-
nists DAMGO, DPDPE, and DAKLI on locomotor activities, Phar-
macol. Biochem. Behav. 45 (1993) 315 - 320.
[57] C. Miaskowski, Y.O. Taiwo, J.D. Levine, n- and y-opioid agonists
synergize to produce potent analgesia, Brain Res. 509 (1990) 165- 168.
[58] M.J. Millan, Kappa-opioid receptors and analgesia, Trends Pharma-
col. Sci. 11 (1990) 70-76.
[59] P.J. Monroe, A.A. Hawranko, D.L. Smith, D.J. Smith, Biochemical
and pharmacological characterization of multiple h-endorphinergic
antinociceptive systems in the rat periaqueductal gray, J. Pharmacol.
Exp. Ther. 276 (1995) 65 -73.
[60] H.I. Mosberg, R. Hurst, V.J. Hruby, K. Gee, H.I. Yamamura, J.J.
Galigan, T.F. Burks, Bis-penicillamine enkephalins possess highly
improved specificity toward delta opioid receptors, Proc. Natl. Acad.
Sci. U. S. A. 80 (1983) 5871 - 5874.
[61] M. Ohno, T.S. Yamamoto, S. Ueki, Analgesic and discriminative
properties of U-62,066E, the selective kappa-opioid receptor agonist,
in the rat, Psychopharmacology 106 (1992) 31 - 38.
[62] M.H. Ossipov, C.J. Kovelowski, M.L. Nichols, V.J. Hruby, F. Porreca,
Characterization of supraspinal antinociceptive actions of opioid delta
agonists in the rat, Pain 62 (1995) 287 - 293.
[63] Z.Z. Pan, S.A. Tershner, H.L. Fields, Cellular mechanism for anti-
analgesic action of agonists of the n-opioid receptor, Nature 389
(1997) 382 - 385.
[64] G.W. Pasternak, Pharmacological mechanisms of opioid analgesics,
Clin. Neuropharmacol. 16 (1993) 1 - 18.
[65] L.N. Pastoriza, T.J. Morrow, K.L. Casey, Medial frontal cortex lesions
selectively attenuate the hot plate response: possible nocifensive
apraxia in the rat, Pain 64 (1996) 11 - 17.
[66] T. Pelissier, C. Paeile, R. Soto-Moyano, H. Saavedra, A. Hernandez,
Analgesia produced by intrathecal administration of the kappa opioid
agonist, U-50,488H, on formalin-evoked cutaneous pain in the rat,
Eur. J. Pharmacol. 190 (1990) 287 - 293.
[67] L.J. Pellegrino, A.S. Pellegrino, A.J. Cushman, A Stereotaxic Atlas of
the Rat Brain, Plenum, New York, 1979.
[68] F. Petraglia, M. Baraldi, G. Giarri, F. Facchinetti, M. Santi, A. Volpe,
A.R. Genazzani, Opioid peptides of the pituitary and hypothalamus:
changes in pregnant and lactating rats, J. Endocrinol. 105 (1985)
239 - 245.
[69] M.J. Picker, S.S. Negus, K.R. Powell, Differential cross-tolerance to
mu and kappa opioid agonists in morphine-tolerant rats responding
under a schedule of food presentation, Psychopharmacology 103
(1991) 129 - 135.
[70] M.F. Piercey, F.J. Einspaur, Spinal analgesic actions of kappa receptor
agonists, U-50,488H and spiradoline (U-62066), J. Pharmacol. Exp.
Ther. 251 (1989) 267 - 271.
[71] L.C. Pinheiro Machado Fj, J.F. Hurnik, J.H. Burton, The effect of
amniotic fluid ingestion on the nociception of cows, Physiol. Behav.
62 (1997) 1339 - 1344.
[72] T.M. Robinson, P. Abbott, M.B. Kristal, Blockade of digestion by
famotidine pretreatment does not interfere with the opioid-enhancing
effect of ingested amniotic fluid, Physiol. Behav. 57 (1995) 261 - 263.
[73] T.M. Robinson-Vanderwerf, J.M. DiPirro, A.R. Caggiula, M.B. Kristal,
The analgesia-enhancing component of ingested amniotic fluid does
not affect nicotine-induced antinociception in naltrexone-treated rats,
Pharmacol. Biochem. Behav. 58 (1997) 147- 151.
[74] B.P. Roques, F. Noble, V. Dauge, M.-C. Fournie-Zaluski, A. Beaumont,
Neutral endopeptidase 24.11: structure, inhibition, and experimental
and clinical pharmacology, Pharmacol. Rev. 45 (1993) 87 - 146.