Endogenous opiates: 1987

Psychopharmacology: The third generation of progress

1988 • 3,403 citations

Neuropeptide Regulation of Appetite and Weight*

1987 • 598 citations

Opioids and sexual behavior

1987 • 271 citations

Endogenous opioid systems regulate cell proliferation in the developing rat brain

1987 • 228 citations

B.C.G. VACCINATION AND LEUKÆMIA MORTALITY

1970 • 226 citations

Motivational properties of opioids: evidence that an activation of σ-receptors mediates reinforcement processes

1987 • 167 citations

Kappa opioids in rhesus monkeys. I. Diuresis, sedation, analgesia and discriminative stimulus effects.

1987 • 161 citations

Changes in hypothalamic preproenkephalin A mRNA following stress and opiate withdrawal

1987 • 161 citations

Postnatal development of multiple opioid receptors in rat brain

1987 • 155 citations

Naltrexone decreases self‐injurious behavior

1987 • 151 citations

Endogenous opioids regulate dendritic growth and spine formation in developing rat brain

1987 • 143 citations

Peptide opioid antagonist separates peripheral and central opioid antitransit effects.

1987 • 140 citations

Naloxone inhibits mating and conditioned place preference for an estrous female in male rats soon after castration

1987 • 131 citations

Enkephalinase inhibitor potentiates substance P- and electrically induced contraction in ferret trachea

1987 • 127 citations

Endogenous opioids may mediate secondary damage after experimental brain injury

1987 • 123 citations

Rewarding properties of β-endorphin as measured by conditioned place preference

1987 • 123 citations

The effects of footshock stress on regional brain dopamine metabolism and pituitary β-endorphin release in rats previously sensitized to amphetamine

1987 • 120 citations

Memory enhancement with intra-amygdala post-training naloxone is blocked by concurrent administration of propranolol

1989 • 115 citations

Opioid receptors and endogenous opioids in diverse human and animal cancers.

1987 • 113 citations

Is the motivational effect of opiate withdrawal reflected by common somatic indices of precipitated withdrawal? A place conditioning study in the rat

1987 • 108 citations

Naloxone attenuation of the effect of cocaine on rewarding brain stimulation

1987 • 107 citations

Sex and day-night differences in opiate-induced responses of insular wild deer mice, Peromyscus maniculatus triangularis

1987 • 104 citations

Biochemical and immunocytological localization of the neuropeptides FMRFamide, SCPA, SCPB, to neurons involved in the regulation of feeding in Aplysia

1987 • 104 citations

Preoptic area opioids and opiate receptors increase during pregnancy and decrease during lactation

1987 • 103 citations

Beta‐endorphin and adrenocorticotropin response to supramaximal treadmill exercise in trained and untrained males

1987 • 94 citations

Enkephalinase inhibition: Regulation of ethanol intake in genetically predisposed mice

1987 • 90 citations

Kappa opioids in rhesus monkeys. III. Dependence associated with chronic administration.

1987 • 87 citations

Effects of naltrexone on learning and performance of conditional fear-induced freezing and opioid analgesia

1987 • 87 citations

Selective changes in μ, δ and ϰ opioid receptor binding in certain limbic regions of the brain in Alzheimer's disease patients

1987 • 85 citations

Opioid receptor systems and the endorphins: a review of their spinal organization

1987 • 81 citations

Comparative neurobiology of opioids in invertebrates with special attention to senescent alterations

1987 • 80 citations

Alterations in regional concentrations of endogenous opioids following traumatic brain injury in the cat

1987 • 76 citations

Reduced cerebrospinal fluid levels of immunoreactive pro-opiomelanocortin related peptides (including beta-endorphin) in anorexia nervosa

1987 • 76 citations

Kappa receptors mediate the peripheral aversive effects of opiates

1987 • 74 citations

Stress-induced changes in plasma concentrations of immunoreactive beta-endorphin and cortisol in response to routine surgical procedures in lambs.

1987 • 74 citations

Neuropharmacology of drugs affecting food intake

1987 • 73 citations

Antagonism of endogenous opioids modulates memory processing

1987 • 73 citations

Effect of naltrexone on food intake, hunger, and satiety in obese men

1987 • 73 citations

Stress-induced Changes in Plasma Concentrations of Immunoreactive ß-Endorphin and Cortisol in Response to Routine Surgical Procedures in Lambs

1987 • 73 citations

Selective activation of opioid receptors differentially affects lordosis behavior in female rats

1987 • 70 citations

Enkephalins, catecholamines, and psychological mood alterations: effects of prolonged exercise.

1987 • 70 citations

Serum beta-endorphin levels during a graded exercise test to exhaustion.

1987 • 69 citations

The influence of chronic stress on multiple opioid peptide systems in the rat: pronounced effects upon dynorphin in spinal cord

1987 • 68 citations

Modulation of gender-specific effects upon swim analgesia in gonadectomized rats

1987 • 68 citations

Exposure to novelty induces naltrexone-reversible analgesia in rats.

1987 • 67 citations

Peripheral effects of opioid drugs on capsaicin-sensitive neurones of the guinea-pig bronchus and rabbit ear

1987 • 67 citations

Limbic postictal events: Anatomical substrates and opioid receptor involvement

1987 • 66 citations

Opioid action on the intestine: The importance of the intestinal mucosa

1987 • 65 citations

Intrathecal dynorphin (1–13) results in an irreversible loss of the tail-flick reflex in rats

1987 • 65 citations

Persistence and specificity of small doses of morphine on intake of alcoholic beverages

1987 • 64 citations

Intrathecal dynorphin A1–13 and dynorphin A3–13 reduce rat spinal cord blood flow by non-opioid mechanisms

1987 • 64 citations

Dexamethasone alters plasma levels of beta-endorphin and postoperative pain

1987 • 63 citations

Evidence for mu opioid receptor mediation of enkephalin-induced electroencephalographic seizures.

1987 • 62 citations

Stress-induced disruption of parturition in the rat may be mediated by endogenous opioids

1987 • 62 citations

Kappa opioids in rhesus monkeys. II. Analysis of the antagonistic actions of quadazocine and beta-funaltrexamine.

1987 • 62 citations

Role of opioid neurons in the regulation of intestinal peristalsis

1987 • 62 citations

Three-choice drug discrimination in opioid-dependent humans: hydromorphone, naloxone and saline.

1987 • 61 citations

Exposure to novelty induces naltrexone-reversible analgesia in rats.

1987 • 61 citations

Morphine effects on locus ceruleus neurons are dependent on the state of arousal and availability of external stimuli: studies in anesthetized and unanesthetized rats.

1988 • 61 citations

Sexual behavior induces naloxone-reversible hypoalgesia in male rats

1987 • 60 citations

Attenuation of morphine-induced analgesia in mice by exposure to magnetic resonance imaging: Separate effects of the static, radiofrequency and time-varying magnetic fields

1987 • 60 citations

Aversive property of opioid receptor blockade in drug-naive mice

1987 • 59 citations

Immunomodulation by morphine and marijuana

1987 • 57 citations

The role of endogenous opioids in congestive heart failure: effects of nalmefene on systemic and regional hemodynamics in dogs.

1987 • 55 citations

Evidence for opioid and non-opioid forms of stress-induced analgesia in the snail, Cepaea nemoralis

1987 • 55 citations

The effect of acute and repeated electroconvulsive treatment on plasma β-endorphin, growth hormone, prolactin and cortisol secretion in depressed patients

1987 • 54 citations

Activation and expression of endogenous pain control mechanisms in rats given repeated nociceptive tests under the influence of naloxone.

1987 • 54 citations

Opiate activity and transepithelial passage of intact beta-casomorphins in rabbit ileum

1987 • 54 citations

Differentiation between mu and kappa receptor-mediated effects in opioid drug discrimination: apparent pA2 analysis.

1987 • 51 citations

Naloxone-reversible antidiarrheal effects of enkephalinase inhibitors

1987 • 49 citations

An in vitro autoradiographic analysis of mu and delta opioid binding in the hippocampal formation of kindled rats

1987 • 49 citations

Central structures involved in opioid-induced feeding.

1987 • 47 citations

Serum ??-endorphin levels during a graded exercise test to exhaustion

1987 • 47 citations

β-Endorphin Secretion in Rams Related to Season and Photoperiod

1987 • 47 citations

Modulation of human neuroblastoma transplanted into nude mice by endogenous opioid systems

1987 • 46 citations

Naloxone blocks the interferon-α induced changes in hypothalamic neuronal activity

1987 • 45 citations

Effects of opioid peptides and naloxone on nervous tissue in culture

1987 • 45 citations

Stimulatory influences of calcium channel antagonists on stress-induced opioid analgesia and locomotor activity

1987 • 45 citations

Plasma beta-endorphin levels in silent myocardial ischemia induced by exercise

1987 • 45 citations

Morphine-induced analgesia and exposure to low-intensity 60-Hz magnetic fields: inhibition of nocturnal analgesia in mice is a function of magnetic field intensity

1987 • 45 citations

Implication of endogenous opioid mechanism in the production of the antinociceptive effect induced by psychological stress in mice.

1987 • 45 citations

Decrease of mu opioid receptors in the brain and in the hypothalamus of the aged male rat

1987 • 44 citations

Activation and expression of endogenous pain control mechanisms in rats given repeated nociceptive tests under the influence of naloxone.

1987 • 44 citations

Systemic opiate administration has heterogeneous effects on activity recorded from nucleus accumbens neurons in vivo

1987 • 43 citations

Dynorphin induces task-specific impairment of memory

1987 • 43 citations

Naloxone and ?-endorphin alter the effects of post-training epinephrine on memory

1987 • 43 citations

Effects of naloxone and naltrexone on meal patterns of freely-feeding rats

1987 • 43 citations

Temporal factors influencing the development of acute tolerance to opiates.

1987 • 43 citations

Opioids and hibernation. II. Effects of kappa opioid U69593 on induction of hibernation in summer-active ground squirrels by “hibernation induction trigger” (HIT)

1987 • 43 citations

Buccal and oral bioavailability of naloxone and naltrexone in rats

1987 • 42 citations

Response of plasma endorphins to running exercises in male and female endurance athletes

1987 • 42 citations

Opioids and hibernation. I. Effects of naloxone on bear hit's depression of guinea pig ileum contractility and on induction of summer hibernation in the ground squirrel

1987 • 41 citations

The β-endorphin response to stress during postnatal development in the rat

1987 • 40 citations

Activation of the opioid and nonopioid analgesic systems: Evidence for a memory hypothesis and against the coulometric hypothesis.

1987 • 39 citations

Determination of cross tolerance in rat spinal cord using intrathecal infusion via sequential mini-osmotic pumps

1987 • 39 citations

Alcohol and Opioid Peptides: Neuropharmacological Rationale for Physical Craving of Alcohol

1987 • 39 citations

Opioid peptide levels in gerbil brain after transient ischemia: lasting depletion of hippocampal dynorphin.

1987 • 39 citations

The effects of adrenergic, opioid and pancreatic polypeptidergic compounds on feeding and other behaviors in neonatal leghorn chicks

1987 • 38 citations

Increased sensitivity to the stimulus properties of morphine in food deprived rats

1987 • 38 citations

Activation of cholinergic mechanisms in the medulla oblongata reverse intravenous opioid-induced respiratory depression.

1987 • 38 citations

Naloxone blocks the effects of chlordiazepoxide on acquisition but not performance of differential reinforcement of low rates of response (DRL)

1987 • 37 citations

Quaternary naltrexone reveals the central mediation of conditional opioid analgesia

1987 • 37 citations

Beta endorphin levels in CSF during methadone maintenance

1987 • 37 citations

Reversal of opioid-induced muscular rigidity in rats: Evidence for alpha-2 adrenergic involvement

1987 • 35 citations

Cerebral monoamine neurotransmitters in opioid withdrawal and dependence.

1987 • 35 citations

Cold and immobilization stress-induced changes in pain responsiveness and brain met-enkephalin-like immunoreactivity in the rat

1987 • 35 citations

Influence of naloxone on brain and behavior of a self-injurious woman

1987 • 35 citations

Plasma beta-endorphin immunoreactivity during graded cycle ergometry.

1987 • 35 citations

Opiate receptors and the endorphin-mediated cardiovascular effects of clonidine in rats: evidence for hypertension-induced mu-subtype to delta-subtype changes.

1987 • 34 citations

Analgesia and decrement in operant performance in socially defeated mice: Selective cross-tolerance to morphine and antagonism by naltrexone

1987 • 34 citations

Nucleus accumbens opiate-dopamine interactions and locomotor activation in the rat: Evidence for a pre-synaptic locus

1987 • 34 citations

Postdexamethasone plasma cortisol and β-endorphin levels in depression: Relationship to severity of illness

1987 • 34 citations

?-endorphin-sensitive opioid receptors in the rat tail artery

1987 • 34 citations

Effects of stress and β-funal trexamine pretreatment on morphine analgesia and opioid binding in rats

1987 • 33 citations

Increased cerebrospinal fluid β-endorphin immunoreactivity in infants with apnea and in siblings of victims of sudden infant death syndrome

1987 • 33 citations

Opioid regulation of food intake and body weight in humans.

1987 • 33 citations

Menopausal hot flushes and plasma beta-endorphins.

1987 • 33 citations

Morphine and diprenorphine together potentiate intake of alcoholic beverages

1987 • 33 citations

Serum Beta-endorphin and Affective Responses to Graded Exercise in Young and Elderly Men

1987 • 33 citations

Exogenous opiates: their local mechanisms of action in the canine small intestine and stomach

1987 • 33 citations

Naloxone fails to block the effects of chlordiazepoxide on acquisition and performance of successive discrimination

1987 • 33 citations

Antibodies to dynorphin A(1–13) but not β-endorphin inhibit electrically elicited feeding in the rat

1987 • 33 citations

Antagonism of Postoperative Opioid-Induced Respiratory Depression

1988 • 32 citations

Neonatal Adaptation: Naloxone Increases the Catecholamine Surge at Birth

1987 • 32 citations

Suppression of deprivation-induced water intake in the rat by opioid antagonists: central sites of action

1987 • 32 citations

The involvement of endogenous opiate systems in learned helplessness and stress-induced analgesia

1987 • 32 citations

Enkephalins and anaphylactic shock: modulation and prevention of shock in the rat

1987 • 31 citations

Chronic naltrexone supersensitizes the reinforcing and locomotor-activating effects of morphine

1987 • 31 citations

Opiates and deer mouse behaviour: differences between island and mainland populations

1987 • 31 citations

Naloxone reduces ventilatory depression of brain hypoxia

1987 • 31 citations

Exercise- and cold-induced changes in plasma beta-endorphin and beta-lipotropin in men and women

1987 • 30 citations

Plasma beta-endorphin responses to one-hour bicycling and running at 60% VO2max.

1987 • 30 citations

Cardiovascular effects of dynorphin A (1–13) in conscious rats and its modulation of morphine bradycardia over time

1987 • 30 citations

Assessment of plasma opioid peptides, ?-endorphin and met-enkephalin, at the end of an international nordic ski race

1987 • 30 citations

Effect of naloxone on fetal behavior near term

1987 • 29 citations

Convulsant action of morphine, [d-ala2, d-leu5]-enkephalin and naloxone in the rat amygdala: Electroencephalographic, morphological and behavioural sequelae

1987 • 29 citations

Slugs and snails and opiate tales: opioids and feeding behavior in invertebrates.

1987 • 29 citations

The effects of opioid antagonists on ingestive behavior in the domestic fowl

1987 • 29 citations

Aggression, defeat and opioid activation in mice: Influences of social factors, size and territory

1987 • 29 citations

Localization and ceoncentration of β- and β-lipotrophin in human placenta

1987 • 29 citations

Neuroimmunomodulation with enkephalins: in vitro enhancement of natural killer cell activity in peripheral blood lymphocytes from cancer patients.

1987 • 29 citations

β-Endorphin-like immunoreactivity in cerebrospinal fluid of patients with Alzheimer's disease and Parkinson's disease

1987 • 29 citations

Effect of noise level on the Met-enkephalin content of the guinea pig cochlea

1987 • 29 citations

Expression of morphine-conditioned hyperactivity is attenuated by naloxone and pimozide

1987 • 29 citations

Opioid mechanisms involved in the slow potential change and neuronal refractoriness during cortical spreading depression

1987 • 28 citations

Beta-endorphin-(1–27) antagonizes beta-endorphin-induced hypothermia in mice

1987 • 28 citations

Opiate reinforcement and naloxone aversion, as revealed by place preference paradigm, in two strains of rats

1987 • 28 citations

Effects of β-chlornaltrexamine on food intake, body weight and opioid-induced feeding

1987 • 28 citations

Beta-endorphin, somatostatin, and prolactin levels in cerebrospinal fluid of epileptic patients after generalised convulsion.

1987 • 28 citations

Twenty-four-hour beta-endorphin secretory pattern in the elderly

1987 • 27 citations

Modulation of Murine Neuroblastoma in Nude Mice by Opioid Antagonists2

1987 • 27 citations

Opioid ?-receptor agonists suppress sexual behaviors in male rough-skinned newts (Taricha granulosa)

1987 • 27 citations

Inhibition of sexual behavior in female rats by intracerebral injections of Met-enkephalin in combination with an inhibitor of enkephalin degrading enzymes

1987 • 27 citations

Plasma enkephalin-like peptide response to chronic nicotine infusion in guinea pig

1987 • 27 citations

β-Endorphin in Uterine Secretions of Pseudopregnant and Ovariectomized, Ovarian Steroid-Treated Gilts*

1987 • 27 citations

Diazepam and endorphin independently inhibit ultrasonic distress calls in rats

1987 • 26 citations

Inhibition of enkephalinase activity attenuates naloxone-precipitated withdrawal symptoms

1987 • 26 citations

Influence of metenkephalin analogue on motor activity of the gastrointestinal tract

1987 • 26 citations

The dexamethasone and cortisol suppression test in depression: β-endorphin as a useful marker

1987 • 25 citations

Effect of Naloxone in Experimental Acute Spinal Cord Injury

1987 • 25 citations

MIF-1 and Tyr-MIF-1 antagonize morphine and opioid but not non-opioid stress-induced analgesia in the snail, Cepaea nemoralis

1987 • 25 citations

Rise in Plasma Beta-Endorphin, ACTH, and Cortisol in Cancer Patients Undergoing Whole Body Hyperthermia

1987 • 25 citations

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

1987 • 25 citations

Role of endogenous enkephalins in locomotion evidenced by acetorphan, an "enkephalinase" inhibitor.

1987 • 24 citations

Somatostatin, β-endorphin, and prolactin levels in human cerebrospinal fluid during the γ-vinyl-GABA treatment of patients with complex partial epilepsy

1987 • 24 citations

Plasma ??-endorphin immunoreactivity during graded cycle ergometry

1987 • 24 citations

Opioid peptides and the control of feeding in sheep.

1987 • 24 citations

Diprenorphine has agonist activity at opioid κ-receptors in the myenteric plexus of the guinea-pig ileum

1987 • 24 citations

Warm Tub Bath During Labor

1987 • 24 citations

Electrophysiological evidence for a non-opioid interaction between dynorphin and GABA in the substantia nigra of the rat

1987 • 24 citations

Effects of ketamine on nociception and gastrointestinal motility in mice are unaffected by naloxone

1987 • 23 citations

Selected opioids modify intake of sweetened ethanol solution among female rats

1987 • 23 citations

Effects of Dynorphin (1–8) on movement: Non-opiate effects and structure-activity relationship

1987 • 23 citations

On the relationship between clonidine hypotension and brain beta-endorphin in the spontaneously hypertensive rat: studies with alpha adrenergic and opiate blockers.

1987 • 22 citations

Differential effects of CGS 8216 and naltrexone on ingestional behaviour

1987 • 22 citations

Effects of naloxone and diprenorphine on amphetamine-stimulated behavior in guinea pigs and rats

1987 • 21 citations

Opioid peptides and the control of feeding in sheep.

1987 • 21 citations

Aggression and defeat-induced opioid analgesia displayed by mice are modified by calcium channel antagonists and agonists

1987 • 21 citations

Conditioned stimulus control of morphine hyperthermia

1990 • 21 citations

Evidence of an immune system to brain communication axis that affects central opioid functions: Muramyl peptides attenuate opiate withdrawal

1987 • 21 citations

Naloxone reverses post-ejaculatory inhibition of sexual behaviour in female rats

1987 • 21 citations

Tolerance to hyperthermia produced by morphine in rat

1987 • 21 citations

Locomotor activity and contracture of isolated ileum precipitated by naloxone following treatment of guinea-pigs with a single dose of morphine

1987 • 21 citations

Hypotensive effect of naloxone on high blood pressure induced by stress in the rat

1987 • 21 citations

Beta-endorphin, ACTH, and cortisol response to hemorrhage in conscious pigs

1987 • 20 citations

Effect of intravenous heroin and naloxone on regional cerebral blood flow in the conscious rat

1987 • 20 citations

Naloxone and [Met5]enkephalin effects on retention: attenuation by adrenal denervation

1987 • 20 citations

Modulation of mesolimbic dopaminergic projections by beta-endorphin in the rat

1989 • 20 citations

Differential effects of heroin on opioid levels in the rat brain

1987 • 20 citations

Naloxone blockade of growth hormone-releasing factor-induced feeding

1987 • 20 citations

Activation of the opioid and nonopioid analgesic systems: Evidence for a memory hypothesis and against the coulometric hypothesis.

1987 • 20 citations

Evidence for tryptaminergic and noradrenergic involvement in the antisecretory action of morphine in the rat jejunum

1987 • 20 citations

Effects of treatment with scopolamine and naloxone, singly and in combination, on amygdala kindling

1987 • 20 citations

Role of peripheral and central opioid activity in analgesia induced by restraint stress

1987 • 20 citations

Chronic opioid antagonist treatment facilatates nonopioid, stress-induced analgesia

1987 • 20 citations

Systemic methionine-enkephalin evokes cardiostimulatory responses in the human

1987 • 20 citations

Opioid Regulation of Food Intake and Body Weight in Humans

1987 • 20 citations

Evaluation of the effects of opioid agonists and antagonists under a fixed-consecutive-number schedule in rats

1987 • 19 citations

Effects of therapeutically induced affect arousal on depressive symptoms, pain and beta-endorphins among rheumatoid arthritis patients

1987 • 19 citations

Effects of opiate antagonist treatment into either the periaqueductal grey or nucleus accumbens on heroin-induced locomotor activation

1987 • 19 citations

The role of endogenous opioids in footshock-induced hyperthemia

1987 • 19 citations

Plasma ??-endorphin responses to one-hour bicycling and running at 60% &OV0312;O2max

1987 • 19 citations

Central gray modulation of affective defense is differentially sensitive to naloxone

1987 • 19 citations

Opioid modulation of baroreceptor reflex sensitivity in dogs

1987 • 19 citations

Opiod involvement in the control of feeding in an insect, the American cockroach

1987 • 19 citations

The kappa agonists PD117302 and U50488 produce a biphasic effect on 24 hour food intake in the rat

1987 • 19 citations

Seasonal difference in thermoregulatory responses to opiates in a mammalian hibernator

1987 • 18 citations

Developmental responses to opioids reveals a lack of effect on stress‐induced corticosterone levels in neonatal rats

1987 • 18 citations

Retention impairment by posttraining epinephrine: Role of state dependency and of endogenous opioid mechanisms.

1987 • 18 citations

Enkephalin enhances responsiveness to perforant path input while decreasing spontaneous activity in the dentate gyrus

1987 • 18 citations

Effects of Delta Opioid Antagonists on Enkephalin-Induced Seizures

1987 • 18 citations

Retention impairment by posttraining epinephrine: Role of state dependency and of endogenous opioid mechanisms.

1987 • 18 citations

Pre-test administration of β-endorphin, or of electroconvulsive shock reverses the memory disruptive effect of posttraining electroconvulsive shock

1987 • 18 citations

Naloxone stimulates sexual behaviour in lactating rats

1987 • 18 citations

Activation of endogenous excitatory opiate pathways in canine small intestine by field stimulation and motilin

1987 • 18 citations

Multiple opiate receptors and pharmacological response to morphine in rats maintained on diets differing in protein concentration

1987 • 17 citations

N alpha-acetyl-beta-endorphin stimulates ornithine decarboxylase activity in preweanling rat pups: opioid- and non-opioid-mediated mechanisms.

1987 • 17 citations

Modification of the development of acute opiate tolerance by increased dopamine receptor sensitivity.

1987 • 17 citations

THE EFFECT OF ENDOGENOUS OPIOIDS ON BLOOD PRESSURE DURING STRESS

1987 • 17 citations

The role of opiate, dopaminergic, and adrenergic systems in the hypothalamo-pituitary dysfunction in obesity

1987 • 17 citations

Magnetic fields and stress: Day-night differences

1987 • 17 citations

Effect of naloxone on conditioned suppression in rats.

1987 • 16 citations

Cardiorespiratory Depression and Plasma β-Endorphin Levels in Low-Birth-Weight Infants During the First Day of Life

1987 • 16 citations

Effect of dermorphin on body temperature in rats

1987 • 16 citations

Hypothermia and poikilothermia induced by a κ-agonist opioid and a neuroleptic

1987 • 16 citations

Beta endorphin: a factor in "fun run" collapse?

1987 • 16 citations

Naltrexone treatment for postconcussional syndrome

1987 • 16 citations

Endogenous opioids modulate fetal rabbit lung maturation

1987 • 16 citations

Effect of naloxone on conditioned suppression in rats.

1987 • 16 citations

Naloxone accelerates the rate of ventilatory acclimatization to hypoxia in awake rats

1987 • 15 citations

Effects of morphine, ethylketocyclazocine, U-50,488H and naloxone on the acquisition of a classically conditioned response in the rabbit.

1987 • 15 citations

Plasma opioid peptide responses during heat acclimation in humans

1987 • 15 citations

α-Adrenergic mediation of the tail skin temperature response to naloxone in morphine-dependent rats

1987 • 15 citations

VARIABLE‐INTERVAL SCHEDULES OF TIMEOUT FROM AVOIDANCE: EFFECTS OF CHLORDIAZEPOXIDE, CGS 8216, MORPHINE, AND NALTREXONE

1987 • 15 citations

Social conflict analgesia: Inhibition of early non-opioid component by diazepam or Flumazepil fails to affect appearance of late opioid component

1987 • 15 citations

Hormone action in newt limb regeneration: insulin and endorphins

1987 • 15 citations

Effects of naloxone on human ovarian cancer cell growth in vitro and in vivo.

1987 • 15 citations

Evidence for altered opioid activity in patients with cancer

1987 • 15 citations

Preexposure to a nonaggressive opponent prevents low-intensity, social conflict analgesia in mice.

1987 • 15 citations

Differential modification of morphine and methadone dependence by interferon alpha

1987 • 15 citations

Modulation by enkephalin analogues and neuroleptics of apomorphine-induced stereotypy and turning behaviour in rats

1987 • 14 citations

The Effect of Enkephalin Analogue on Pituitary Hormone Release in Human Obesity

1987 • 14 citations

Effects of naloxone on the mechanical activity of isolated rat hearts perfused with morphine or opioid peptides

1987 • 14 citations

Possible mechanism involved in the inhibitory action of U-50, 488H, an opioid .KAPPA. agonist, on guinea pig hippocampal CA3 pyramidal neurons in vitro.

1987 • 14 citations

Administration of gonadal steroids to neonatal rats affects beta-endorphin levels in the adult

1987 • 14 citations

Interactions of cholecystokinin, β-endorphin, and their antagonists on passive avoidance behavior in rats

1987 • 14 citations

Naloxone in tardive dyskinesia

1987 • 13 citations

Antagonism of Postoperative Opioid-Induced Respiratory Depression

1987 • 13 citations

Structure-Activity Relationship of Dermorphin on Gastric Secretion*

1987 • 13 citations

Circadian rhythm of feeding induced changes in hypothalamic Met-enkephalin concentrations

1987 • 13 citations

Naloxone decreases the inhibiting effect of ethanol on the release of arginine-vasopressin induced by cigarette smoking in man

1987 • 13 citations

Effect of parasympathetic blockade on ventilatory and cardiac depression induced by opioids

1987 • 13 citations

The Effect of Long‐Term: Opiate Antagonist Administration to Pubertal Boys

1987 • 13 citations

Effects of centrally administered naloxone on gastrointestinal myoelectrical activity in morphine-dependent rats.

1987 • 13 citations

Cyclophosphamide and cortisol reduce the severity of morphine withdrawal

1987 • 13 citations

Preexposure to a nonaggressive opponent prevents low-intensity, social conflict analgesia in mice.

1987 • 13 citations

Plasma concentration and vascular effect of ?-endorphin in spontaneously hypertensive and Wistar Kyoto rats

1987 • 12 citations

Gas exchange response to naloxone in chronic obstructive pulmonary disease with hypercapnic respiratory failure.

1987 • 12 citations

Inhibitory action of opioid peptides on ouabain-sensitive Na+-K+ and Ca2+-dependent ATPase activities in bovine cardiac sarcolemma

1987 • 12 citations

Naloxone, naltrexone and body temperature

1987 • 12 citations

Immediate and long-term effects of opiate antagonists on postictal behaviour following amygdala kindling in the rat

1987 • 12 citations

Central alpha 2-adrenergic stimulation increases neurointermediate lobe immunoreactive beta-endorphin in spontaneously hypertensive rats.

1987 • 12 citations

Single Injection of Three Different Preparations of α-Interferon Modifies Morphine Abstinence Signs for a Prolonged Period

1987 • 12 citations

Effect of naltrexone on ethanol-provoked flushing in oriental and white subjects

1987 • 12 citations

Effects of food deprivation and high fat diet on immunoreactive dynorphin A(1–8) levels in brain regions of Zucker rats

1987 • 12 citations

?-funaltrexamine antagonizes the discriminative stimulus effects of morphine but not naltrexone in pigeons

1987 • 12 citations

Startle responding and context conditioning

1987 • 12 citations

Alzheimer's Disease and the Pivotal Role of the Hypothalamus and the Intrinsic Opioid System

1987 • 12 citations

The effect of D-Ala-2-Me-Phe-4-Met-(O)-OL enkephalin on blood pressure, heart rate and digoxin-induced arrhythmias in the guinea pig

1987 • 11 citations

Cerebrospinal fluid from morphine-dependent rats precipitates opiate abstinence syndrome

1987 • 11 citations

Naloxonazine and opioid-induced inhibition of reflex urinary bladder contractions

1987 • 11 citations

Modulation of the autologous mixed lymphocyte reaction by β-endorphin

1987 • 11 citations

Effect of naloxone on regional cerebral blood flow during endotoxin shock in conscious rats

1987 • 10 citations

Phelorphan, an inhibitor of enzymes involved in the biodegradation of enkephalins, affected the withdrawal symptoms in chronic morphine-dependent rats

1987 • 10 citations

Effect of naloxone on microcirculatory behavior during irreversible hemorrhagic shock

1987 • 10 citations

Plasma Levels of β-Endorphin in Depressed Patients

1987 • 10 citations

The influence of naloxone on exercise-induced increase in plasma pituitary hormones and the subjectively experienced level of exhaustion in healthy males

1987 • 10 citations

Comparison of naltrexone and quaternary naltrexone after systemic and intracerebroventricular administration in pigeons

1987 • 10 citations

Autonomic and endocrine participation in opioid peptide-induced hyperglycemia

1987 • 10 citations

Effects of mixed agonist-antagonist opioids on the acquisition of conditional discriminations in monkeys.

1987 • 10 citations

Central nervous system is involved in the cardiovascular responses to naloxone in canine endotoxic but not hemorrhagic shock

1988 • 10 citations

Determination of β-endorphin in alcoholic patients in the acute stage of intoxication: Relation with naloxone therapy

1987 • 10 citations

Naltrexone fails to block shock-induced deficits in an appetitive discrimination task

1987 • 10 citations

Sex difference in naloxone antagonism of swim stress-induced antinociception in mice.

1987 • 10 citations

[D-Ala2,(F5)Phe4]-dynorphin1–13-NH2 (DAFPHEDYN): A potent analog of dynorphin 1–13

1987 • 9 citations

Naloxone in treatment of circulatory shock resistant to conventional therapy

1987 • 9 citations

Skeletal muscle thermogenesis: its role in the hyperthermia of conscious rats given morphine or beta-endorphin.

1987 • 9 citations

Opiate receptor autoradiography in fasting rats.

1987 • 9 citations

Evaluation of the effects of opioid agonists and antagonists under a delayed matching-to-sample procedure in pigeons

1987 • 9 citations

Pregnancy and opiate addiction.

1987 • 9 citations

Effects of central application of naloxone on the skin temperature response in morphine-dependent rats

1987 • 9 citations

Origin of the stimulation of food intake by oral administration of enkephalinase inhibitors in sheep

1987 • 9 citations

Effects of morphine and met-enkephalin analogue on gastric lesions induced by indomethacin

1987 • 9 citations

Leumorphin, a novel opioid peptide, promotes lordosis in female rats

1987 • 9 citations

β-endorphin impairs forced extinction of an inhibitory avoidance response in rats

1987 • 9 citations

Endogenous opioids and post-ictal increase in seizure threshold in Mongolian gerbils

1987 • 8 citations

Effect of Prenatal Exposure to Ethanol on Body Growth and the Pituitary β‐Endorphin

1987 • 8 citations

Plasma Levels of Beta-Endorphin in Young and Aged Human Males During the Morning Hours

1987 • 8 citations

Kentsin: Tetrapeptide from hamster embryos produces naloxone-sensitive effects without binding to opioid receptors

1987 • 8 citations

Endogenous Opioid Effect on Breathing during Normoxia and Hypoxia in Developing Swine

1987 • 8 citations

β‐Endorphin: peripheral opioid activity of homologues from six species

1987 • 8 citations

The interaction of d-amphetamine and naloxone differs for rats trained on separate fixed-interval or fixed-ratio schedules of reinforcement

1987 • 8 citations

Increased plasma ??-endorphin immunoreactivity in scuba divers after submersion

1987 • 8 citations

Prostaglandin-Induced Mid-Pregnancy Abortion Increases Plasma and Amniotic Fluid Levels of β-Lipotropin and β-Endorphin

1987 • 8 citations

Naloxone Efficacy in Bladder Rehabilitation of Spinal Cord Injury Patients

1987 • 8 citations

The effect of naloxone on nocturnal food intake in female and male rats

1987 • 8 citations

THE EFFECTS OF NALOXONE, DEXAMETHASONE, DEOXYCORTICOSTERONE AND 17‐HYDROXYPROGESTERONE ON BLOOD PRESSURE RESPONSES OF NORMAL AND ADRENALECTOMIZED RATS DURING HYPOVOLAEMIC SHOCK

1987 • 8 citations

The differential effects of naloxone hydrochloride on the acquisition and maintenance of schedule-induced polydipsia

1987 • 8 citations

Interaction between endogenous opioids, cholinergic and adrenergic mechanisms during vagally-induced gastrin release in rats

1987 • 8 citations

Actions of opioids on the dorsal root potential of the isolated spinal cord preparation of the neonate rat

1987 • 8 citations

Irradiation exposure modulates central opioid functions

1987 • 8 citations

Adrenalectomy and the anorectic effects of benzodiazepine inverse agonists and opiate antagonists in rats fed a palatable diet

1987 • 7 citations

Naltrexone reverses a long term depressive effect of a toxic lithium injection on saccharin preference

1987 • 7 citations

Opioid modulation of ingestive behaviors in the spiny mouse ()

1987 • 7 citations

Naloxone does not alter haemodynamics in cirrhosis

1987 • 7 citations

Effect of dietary fat on opiate receptor binding and body composition in mice

1987 • 7 citations

Naloxone-induced increase in blood and brain ethanol concentrations in rats

1987 • 7 citations

Prevention of Septic Ventilatory Depression With Naloxone

1987 • 7 citations

Involvement of Endogenous Opiates in Glucose-Stimulated Hyperinsulinism of Canine Endotoxin Shock: Inhibition by Naloxone

1987 • 7 citations

Opioid-induced linear running in obese (ob/ob) and lean mice

1987 • 7 citations

Antiaversive properties of opioids in the conditioned taste aversion test in rat

1987 • 7 citations

Interactions of ketamine, naloxone and morphine in the rat.

1987 • 7 citations

Prolonged Disruption of Plasma β-Endorphin Dynamics after Trauma in the Nonhuman Primate*

1987 • 6 citations

Responses of vasopressin and enkephalins to hemorrhage in adrenalectomized dogs

1987 • 6 citations

DOES THE BLOCKADE OF OPIOID RECEPTORS INFLUENCE THE DEVELOPMENT OF ETHANOL DEPENDENCE?

1987 • 6 citations

Do opioid hormones mediate appetites and love bonds? Presidential address

1987 • 6 citations

Severe hypertensive reaction after naloxone injection during labor

1987 • 6 citations

Respiratory depression after intrathecal opioids

1987 • 6 citations

Amniotic fluid beta-endorphin levels and labor.

1987 • 6 citations

Naloxone, Ethanol, and the Chlorpropamide Alcohol Flush

1987 • 6 citations

Central and peripheral injection of quaternary antagonist, SR58002C, reduces drinking

1987 • 5 citations

Beta-lipotropin is the major component of the plasma opioid response to surgical stress in humans

1987 • 5 citations

Effects of naloxone and cholecystokinin on food and water intake in vasopressin-deficient rats (Brattleboro strain)

1987 • 5 citations

Influence of the histaminergic system on opiate-induced neurosecretion and behaviour

1987 • 5 citations

Pituitary-adrenal mediation of dermorphin-induced inhibition of gastric emptying in rats

1987 • 5 citations

Effects of naloxone on breathing movements during hypercapnia in the fetal lamb

1987 • 5 citations

Enteric opioid neurons modulate the basal tone of the isolated puppy ileum

1987 • 5 citations

Effect of central naloxone on hormone and blood pressure responses to hemorrhage in conscious sheep

1987 • 5 citations

Effects of naloxone on cardiovascular responses to static exercise and behavior in conscious cats

1987 • 5 citations

The function of lateral hypothalamic catecholamine and endorphin systems in the control of motor performance

1987 • 5 citations

Apneustic respiration of ketamine is not antagonized by naloxone in the cat.

1987 • 5 citations

Interaction between naloxone, chlordiazepoxide and valproic acid evaluated by emotional operant behaviour in the rat.

1987 • 5 citations

Naloxone reversal of hemorrhagic hypotension in the conscious guinea-pig is impeded by inhibition of the renin-angiotensin II system

1987 • 4 citations

The effects of naloxone and timolol on plasma catecholamine levels during short-term dynamic exercise

1987 • 4 citations

[Met5]enkephalin concentrations in rat pituitary are maintained under opioid inhibition

1987 • 4 citations

Opiate Involvement in Contrast Media-induced Blood Pressure Changes

1987 • 4 citations

Peripheral opioid receptors mediate gastrointestinal secretory and motor effects of dermorphin N-terminal tetrapeptide (NTT) in the dog

1987 • 4 citations

The effect of enkephalin dimers on body temperature in mice

1987 • 4 citations

Involvement of endogenous opiates in glucose-stimulated hyperinsulinism of canine endotoxin shock. Inhibition by naloxone

1987 • 4 citations

The effects of endogenous opioids on tension development of isolated, electrically stimulated rat atria

1987 • 4 citations

Effects of naloxone on hippocampal seizure activity

1987 • 4 citations

Endorphin: a factor in "fun run" collapse?

1987 • 4 citations

Effects of a novel opioid peptide antagonist on rat bladder motility in vivo

1987 • 4 citations

Naloxone Therapy in Spinal Trauma

1987 • 4 citations

Analysis of mechanisms responsible for the bradycardic action of naloxone after haemorrhage in the conscious rabbit

1987 • 3 citations

Ethanol treatment alters β-endorphin metabolism by purified synaptosomal plasma membranes

1987 • 3 citations

The effects of naloxone and timolol on plasma catecholamine levels during short-term dynamic exercise

1987 • 3 citations

Behaviourally specific interactions between naloxone and beta-phenylethylamine in an operant drug discrimination procedure in rats

1987 • 2 citations

Mechanisms underlying the action of endogenous opioid systems in neural cancer

1987 • 2 citations

The Specificity of the Pupillary Actions of Morphine and Naloxone

1987 • 2 citations

The Opioid System and the Reversibility of the Dementia in Normal Pressure Hydrocephalus

1987 • 2 citations

[Endomorphines in schizophrenia].

1987 • 1 citations

Naloxone sensitivity in squirrel monkeys under a schedule of shock titration

1987 • 1 citations

Deleted Work

1955 • 0 citations