Oral Substitution of Melatonin in Critical Care: A Pharmacokinetic Study in Patients with Intracranial Hemorrhage

  • Mohammadreza Rouini 1Biopharmaceutics Division, Department of Pharmaceutics, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Niloofar Khoshnam Rad Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Mojtaba Mojtahedzadeh 2Department of Clinical Pharmacy, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Atabak Najafi 3Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.
  • Hamidreza Sharifnia 3Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.
  • Mehrnoush Dianatkhah 2Department of Clinical Pharmacy, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Farhad Najmeddin 2Department of Clinical Pharmacy, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Ali Mohammad Hadi 4Departmant of Clinical Pharmacy, College of Pharmacy, University of Basrah , Basrah, Iraq.
  • Bita Shahrami 2Department of Clinical Pharmacy, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
Keywords:
Melatonin, ICH, Pharmacokinetics, HPLC

Abstract

Background

Intracerebral hemorrhage (ICH) is a devastating condition with a high mortality and morbidity rate. Neuroprotective agents protect surrounding brain tissue from the toxic effects of hematoma and can result in better outcomes. There is evidence demonstrating the neuroprotective benefits of melatonin in experimental animal models of ICH. Reduced melatonin levels have been reported in the intensive care unit (ICU) patients. The aim of this study was to evaluate baseline melatonin levels and pharmacokinetic profile of melatonin in ICH patients.

Methods

24  patients with non-traumatic ICH were divided into melatonin and control groups. Subjects in the melatonin group received 30 mg of melatonin for 5 days. Another group of 12 healthy volunteers also were recruited for the study. Baseline serum melatonin levels were measured for all groups. For the pharmacokinetic study, sampling intervals were 0.25, 0.5, 0.75, 1.5, 3, 6 and 10 hours after melatonin administration. Samples were analyzed using an HPLC system with fluorescence detection.

Results

Serum melatonin concentrations found to be decreased in all patients. Patients showed a significant increase in levels by the third day but still lower than healthy volunteers. By day 5, the melatonin group reaches melatonin levels, statistically similar to healthy volunteers, but the control group didn't reach normal levels even on the seventh day of study.

Conclusion

Our study suggests that monitoring melatonin levels and supplementing with exogenous melatonin can correct the reduced levels. Further studies focused on melatonin administration in ICH patients can be helpful in evaluating clinical outcomes in these patients.

References

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Published
2020-03-24
How to Cite
1.
Rouini M, Khoshnam Rad N, Mojtahedzadeh M, Najafi A, Sharifnia H, Dianatkhah M, Najmeddin F, Mohammad Hadi A, Shahrami B. Oral Substitution of Melatonin in Critical Care: A Pharmacokinetic Study in Patients with Intracranial Hemorrhage. J Pharm Care. 8(1):3-10.
Section
Original Article(s)