Identification and Clinical Relevance of an Oxytocin Deficient State Following Melatonin Administration in Patients With Hypopituitarism: a Proof-of-concept, Physiopathological Study With a Control Group
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Change in oxytocin concentration
研究概览
简要总结
Oxytocin (OT) is a hypothalamic peptide that enters the peripheral circulation via the posterior pituitary gland. OT plays a key role in regulating appetite, psychopathology, prosocial behavior and sexual function. Hypopituitarism is associated with increased obesity, increased psychopathology, sexual and prosocial dysfunction despite appropriate hormone replacement. A few studies suggest the existence of a possible OT deficient state in hypopituitarism. In animal models, melatonin has shown to increase OT release.
This study is designed to evaluate oxytocin values after administration of melatonin in adults (healthy volunteers and patients with hypopituitarism).
The investigators hypothesize that OT response will be blunted following melatonin in patients with hypopituitarism compared to healthy controls.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients with hypopituitarism (HYPO) (>1 pituitary hormone deficiency) and stable hormone replacement for the prior three months
- •At least one clinical sign of hypothalamic damage
排除标准
- •uncorrected hormone deficiency
- •creatinine >1.5mg/dL
- •alanine aminotransferase (ALT) or aspartate aminotransferase (AST) >2.5x upper limit of normal
- •hematocrit less than 30%
- •suicidality or active psychosis
- •participation in a trial with investigational drugs within 30 days
- •using a high glucocorticoid dose
- •vigorous physical exercise
- •alcohol intake within 24 hours before the study participation
- •evidence of any acute illness or any illness that the Investigator determines could interfere with study participation or safety
- •pregnancy or breastfeeding for last 8 weeks
- •known allergies towards melatonin
- •patients refusing or unable to give written informed consent
- •patients receiving fluvoxamine and/or impossibility to stop hypnotics 48 hours prior to the study visit.
- •Additionally for healthy controls: the presence of brain or pituitary tumor, radiation involving the hypothalamus or pituitary, history of hypopituitarism or receiving testosterone or glucocorticoids esters.
结局指标
主要结局
Change in oxytocin concentration
时间窗: Baseline blood exam (timepoint 0) and further blood collections after 30, 60, 90 and 120 minutes after baseline blood collection
Change in oxytocin concentration (pg/mL) after administration of 1.9 mg of melatonin orally.
次要结局
- Impulsivity assessment(At baseline)
- Maximal change in oxytocin concentration (pg/mL)(Within the two hours after the injection)
- Overall oxytocin secretion(Within the two hours after the injection)
- Mood assessment(At baseline)
- Quality of life assessment(At baseline)
- Alexithymia assessment(At baseline)