Pain thresholds are elevated during pseudopregnancy

Estrone and Estradiol Levels in the Ovarian Venous Blood from Rats During the Estrous Cycle and Pregnancy*

1971 • 384 citations

Endorphin-Mediated Increases in Pain Threshold During Pregnancy

1980 • 343 citations

A Comparative Study of Serum Progesterone Levels in Pregnancy and in Various Types of Pseudopregnancy in the Rat¹

1974 • 223 citations

Estrogen Increases Proenkephalin Messenger Ribonucleic Acid Levels in the Ventromedial Hypothalamus of the Rat

1988 • 180 citations

Pain and discomfort thresholds in late pregnancy

1986 • 179 citations

LEVELS OF FOLLICLE-STIMULATING HORMONE, LUTEINIZING HORMONE, OESTRADIOL-17β AND PROGESTERONE, AND FOLLICULAR GROWTH IN THE PSEUDOPREGNANT RAT

1975 • 138 citations

Estrogen regulation of proenkephalin gene expression in the ventromedial hypothalamus of the rat: temporal qualities and synergism with progesterone

1989 • 136 citations

Antinociceptive effects of vaginal stimulation in rats: Neurophysiological and behavioral studies

1977 • 134 citations

Analgesic effect of vaginal stimulation in rats: Modulation by graded stimulus intensity and hormones

1976 • 119 citations

Immunoreactive Beta-Endorphin Concentrations in Brain and Plasma during Pregnancy in Rats: Possible Modulation by Progesterone and Estradiol

1987 • 87 citations

Ovarian Secretion of Progesterone and 20α-Hydroxypregn-4-en-3-one During Pseudopregnancy and Pregnancy in Rats

1967 • 79 citations

Luteinizing Hormone, Prolactin and Ovarian 20α-Hydroxysteroid Dehydrogenase Levels during Pregnancy and Pseudopregnancy in the Rat123

1972 • 76 citations

Vaginal-Cervical Vibration: A Simple and Effective Method for the Induction of Pseudopregnancy in the Rat

1966 • 73 citations

Spinal dynorphin involvement in the analgesia of pregnancy: effects of intrathecal dynorphin antisera

1989 • 61 citations

Spinal κ-opiate receptor involvement in the analgesia of pregnancy: effects of intrathecal nor-binaltorphimine, a κ-selective antagonist

1988 • 56 citations

Spinal cord mediation of the opioid analgesia of pregnancy

1987 • 53 citations

Pregnancy-induced analgesia: effects of adrenalectomy and glucocorticoid replacement

1984 • 43 citations

Opioid Plasma Levels during Labour

1982 • 35 citations

Regulation of β-endorphin and acth in brain by estradiol

1985 • 35 citations

An improved long-acting delivery system for narcotic antagonists

1978 • 29 citations

Effects of hypophysectomy and dexamethasone treatment on plasma β-endorphin and pain threshold during pregnancy

1987 • 25 citations