Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P01178 (oxytocin)
 15,767 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

3 ml tylose gel containing 500 micrograms PGE2 was injected into the cervical canal of 23 patients prior to first trimester abortion. 11 patients received 5 mg fenoterol orally before the PGE2-gel application and 12 patients a placebo tablet. The PGFM and oxytocin concentrations in plasma were determined radioimmunologically. The results showed the dominant role of elevated PGFM levels in the clinical prevalence of pain during induced abortion.
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PMID:[Changes in the 13,14-dihydro-15-ketoprostaglandin F2alpha and oxytocin level in the 1st trimester following beta-sympathomimetic and intracervical prostaglandin E2 gel administration]. 321 10

In order to study the etiological role of vasopressin in primary dysmenorrhea the therapeutic effect of an antagonist of vasopressin action on the uterus (1-deamino-2-D-Tyr(OEt)-4-Thr-8-Orn-oxytocin) was investigated in 14 patients with moderate to severe symptoms. The women participated in the study at two menstruations and each time one intravenous bolus injection of the analogue (10 micrograms/kg body weight) and one of the placebo (saline) were given, randomized and double-blind with at least a 2 hour interval. The effect was monitored by overall ratings and by pain diagrams described by the patients. In the former parameter the vasopressin antagonist was significantly more effective (p less than 0.01). In the pain diagrams, however, a significant reduction of symptoms occurred both after the analogue administrations and after placebo given as second injection. The results support a causative role of vasopressin in primary dysmenorrhea, but further studies with higher doses and/or other routes of administration or delivery systems are required in order to delineate the therapeutic value of vasopressin antagonists in the condition.
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PMID:Can primary dysmenorrhea be alleviated by a vasopressin antagonist? Results of a pilot study. 332 65

A double-blind, placebo-controlled clinical trial of epostane, a progesterone synthesis inhibitor, as an adjunct to early mid-trimester abortion by extraamniotic PGE2 was conducted. 5 primigravidae 13-18 weeks pregnant received 100 mg epostane 3 times daily for 3 days, and 5 women received identical placebos. Then they were given exponentially increased doses of oxytocin from 2 to 64 mu/min. In 1 hour 1.5 mg PGE2 in 6% Tylose gel was injected extraamniotically, followed by oxytocin at 100 mu/min 6 hours later. The average interval between PGE2 and abortion was 490 min in the epostane group, compared to 1432 min in controls. The treated women required 1 injection of narcotic analgesic, compared to 2 or 3 in controls. Uterine activity, recorded transcervically, was significantly greater during the baseline recording (p0.05) and the PGE2 infusion (p0.001) phases in the treated group, but not during oxytocin infusion. Progesterone had fallen 74% after epostane treatment. This priming technique has potential benefits for women in less pain, lower PGE2 doses, shorter abortion interval and hospital stay. Possibly by maximizing dose and timing, a day-case mid-trimester abortion or even a medical induction of mid-trimester abortion may be possible in the future.
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PMID:Progesterone inhibition in mid-trimester termination of pregnancy: physiological and clinical effects. 332 76

Questionnaires concerning ailments were sent postpartum (mean two years) to 62 women with anal sphincter ruptures (ASR), who were compared with a matched control population. The frequency of anal sphincter rupture at the hospital during delivery in the period, 1978-82, was 0.7% (n = 63). Primiparity, instrumental deliveries, abnormal presentation, large babies and oxytocin stimulation were all risk factors. Of 59 women answering the questionnaire 37 (63%) stated that they had had ailments three months postpartum, mainly with pain and involuntary passage of flatus but also with dyspareunia and occasional incontinence of faeces. Long-term symptoms were noted by 28 (48%) of the women, mainly with involuntary passage of flatus but also perineal pain, dyspareunia and occasional incontinence of faeces. Long-term symptoms occurred in 7 (88%) of women with ASR also involving the anal mucosa, but only in 21 (39%) of those with ASR only. Three of the patients subsequently underwent reconstructive surgery, and three complained of psychological problems.
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PMID:Long-term ailments due to anal sphincter rupture caused by delivery--a hidden problem. 333 6

In a prospective randomized study, 20 patients with term pregnancies underwent induction of labor with either continuous or pulsed (every 8 minutes) intravenous oxytocin infusion. There were no significant differences with respect to induction-labor interval, induction-delivery interval, cesarean section rates, need for pain relief and Apgar scores. Sixty percent of patients receiving continuous oxytocin infusion developed uterine hyperstimulation but only 10% receiving pulsed oxytocin did so. However, the difference was not significant. The mean +/- SEM total amount of oxytocin given by continuous infusion was 4237 +/- 1066 mU which was 70% more than by pulsatile infusion (2454 +/- 808 mU). The highest rate of oxytocin infused was significantly lower by pulsatile administration (5.2 +/- 0.8 mU/min) than by continuous infusion (9.2 +/- 1.8 mU/min, p = less than 0.05). Our study demonstrates that pulsed administration of oxytocin every 8 minutes is as effective and safe as continuous intravenous infusion of oxytocin for induction of labor, requires less oxytocin with therefore, a wider margin of safety and is consistent with the pulsatile release of oxytocin during normal labor.
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PMID:Pulsatile oxytocin for induction of labor: a randomized prospective controlled study. 340 78

In a clinical trial carried out in 34 pregnancy women Enzaprost F 4 (prostaglandin F2-alpha) was administered into the uterus to cause uterine contractions in the 2nd and 3rd trimesters. The indications for the treatment were: 1. membrane rupture in 20 cases between the 21st and 26th weeks of pregnancy; 2. fetal death in 12 cases between the 24th and 34th weeks of pregnancy, and 3. induced abortion for medical reasons in 2 cases of primiparae in the 2nd trimester. Enzaprost was administered in physiological salt solution in doses of 2-5 mg with a total dose of 9-22 mg (average 18.5 mg). Contractions appeared within 15-30 minutes in groups 1 and within 20-30 minutes in groups 2 and 3. Abortions in the three different groups began 10.2, 11.5, and 6.0 hours after administration in primiparae and 7.3 and 8.2 hours, respectively, after treatment in groups 1 and 2 in women other than primiparae. Oxytocin had to be administered additionally in 3 cases in groups 1 and 2. The method proved to be safe and effective, side effects occurred in 6 cases (17.6%) consisting of cardiac pain, nausea, tachycardia, and increased systolic pressure.
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PMID:[Induction of uterine contractions using Enzaprost F administered into the uterine cavity]. 346 46

The use of gemeprost (16,16 dimethyl-trans-delta 2-PGE1 methyl ester) vaginal pessaries for the termination of pregnancy in the early second trimester has been further investigated. Of 113 women between 12 and 16 weeks gestation, 93 (82%) aborted within 24 hours of the administration of 4.4 +/- 0.1 1 mg gemeprost pessaries. The mean induction-abortion interval was 881 +/- 31 minutes. Successful abortion was achieved in 16 of the remaining 20 women after a second course of gemeprost pessaries without the need for oxytocin supplementation. There were no serious complications. Crampy abdominal pain and vaginal bleeding started after 275 and 756 minutes respectively. Twenty-two (19%) patients did not require pain relief during treatment, but 90 (80%) required parenteral opiates. Vomiting and diarrhoea occurred in 16 (14%) and 23 (20%) cases respectively. The safe induction of therapeutic abortion in 96% of women using vaginal prostaglandin alone offers an acceptable alternative to surgical evacuation in the early second trimester.
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PMID:Prostaglandin-induced pregnancy termination: further studies using gemeprost (16,16 dimethyl-trans-delta 2-PGE1 methyl ester) vaginal pessaries in the early second trimester. 368 94

Acute morphine tolerance was induced in mice by subcutaneous (s.c.) injection of a high dose (30 or 100 mg/kg) of morphine. The degree of tolerance was estimated 5 h later. Intracerebroventricular (i.c.v.) injection of graded doses of oxytocin (OXT) dose-dependently attenuated the development of tolerance. i.c.v. injection of a specific anti-OXT serum, on the other hand, facilitated the development of tolerance. Neither OXT nor anti-OXT serum had any effect on the pain sensitivity in morphine-naive mice; nor did these treatments modify the antinociceptive action of a single morphine treatment. It is concluded that the endogenous OXT of the mouse brain is normally involved in the adaptive response of the organism, leading to the development of morphine tolerance.
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PMID:Development of morphine tolerance under tonic control of brain oxytocin. 375 72

Rats inoculated in the tail-base with killed Mycobacterium butyricum developed an arthritic swelling and inflammation of the limbs accompanied by a hyperalgesia to noxious pressure applied thereto. These changes were maximal at 3 weeks and had subsided by 10 weeks post-inoculation. At 3 weeks, arthritic rats manifested an elevation in levels of immunoreactive (ir)-vasopressin (VP) but not ir-oxytocin (OT) in the midbrain. In contrast, ir-OT was increased in the medulla-pons while ir-VP was unaltered therein. These changes had disappeared by 10 weeks. No other brain region displayed changes. Thus, chronic arthritis is associated with selective and reversible effects upon discrete brain pools of ir-VP and ir-OT. The data clearly demonstrate that pools of ir-VP and ir-OT can be modulated independently of each other in particular brain tissues. Whether the changes are produced by, or reflect a functional response to, the pain rather than other characteristic of the arthritis, remains to be determined.
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PMID:Chronic arthritis in the rat: differential changes in discrete brain pools of vasopressin as compared to oxytocin. 397 43

The oxytocin concentration in the cerebrospinal fluid (CSF) and plasma of pregnant women at term with and without labor pain were measured by radioimmunoassay and compared with those of non-pregnant women of matched age. The oxytocin concentrations in the CSF were 4.9 +/- 4.1 microU/ml (mean +/- S.D.) in pregnant women with labor pain, 4.1 +/- 2.4 microU/ml in those without labor pain and 4.0 +/- 2.8 microU/ml in nonpregnant women, and the oxytocin concentrations in the plasma of these subjects were 45.2 +/- 19.6, 17.1 +/- 22.2 and 7.0 +/- 5.3 microU/ml, respectively. Thus the oxytocin level in the CSF did not change appreciably even when the level in the plasma was raised in the pregnant women with labor pain. These findings suggest that oxytocin does not penetrate the blood-brain barrier, and that oxytocin in the CFS has little or no central role in parturition in women.
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PMID:Oxytocin in the cerebrospinal fluid and plasma of pregnant and nonpregnant subjects. 401 19


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