Journal of Endocrinology and Metabolism, ISSN 1923-2861 print, 1923-287X online, Open Access
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Review

Volume 15, Number 3, August 2025, pages 69-80


Craniopharyngiomas, Alterations of Melatonin Secretion and Their Implications: A Systematic Review

Figures

↓  Figure 1. Melatonin synthesis in humans.
Figure 1.
↓  Figure 2. PRISMA flowchart. PRISMA: Preferred Reporting Items for Systematic Reviews and Meta-Analyses; CP: craniopharyngioma.
Figure 2.

Tables

↓  Table 1. Melatonin Secretion Evaluation
 
References Patients (n) Controls (n) Melatonin assessment Results in patients Results in controls
BMI: body mass index; RIA: radioimmunoassay; ELISA: enzyme-linked immunosorbent assay; SD: standard deviation.
Muller et al, 2006 [33] (SG) 79 30 Salivary melatonin by RIA (pg/mL) BMI < 4 SD: BMI < 4 SD:
Morning: median - 7 Morning: median - 5
Midday: median - 1 Midday: median - 1
Evening: median - 1 Evening: median - 1
Night: median - 12 Night: median - 18
BMI > 4 SD: BMI > 4 SD:
Morning: median - 3 Morning: median - 10
Midday: median - 2 Midday: median - 1
Evening: median - 1 Evening: median - 1
Night: median - 2 Night: median - 15
Lipton et al, 2009 [34] (RA) 3 Historical data Plasma melatonin by unspecified methodology (pg/mL) 24-h levels: Daytime levels:
2.7 ± 0.07 8 - 50 pg/mL
0.82 ± 0.12
0.61 ± 0.02
Nighttime levels: Nocturnal levels:
0.84 ± 0.82 50 - 60 pg/mL
0.74 ± 0.29
1.22 ± 1.27
Pickering et al, 2014 [35] (ML) 15 15 Salivary melatonin by RIA (pg/mL) 24-h median: 86.2 (35.4 - 249.0) 24-h median: 52.8 (56.7 - 323.7)
Kamara et al, 2023 [36] (AR) 53 0 Salivary melatonin by ELISA (pg/mL) DLMO not estimable: 25 patients Not applicable
DLMO estimable: 28 patients

 

↓  Table 2. Risk of Bias Assessment
 
References Confounding Classification Selection Deviations Missing data Measurement Reporting Overall risk
Muller et al, 2006 [33] Moderate Low Moderate Low Low Moderate Moderate Moderate
Lipton et al, 2009 [34] Serious Low Moderate Serious Serious Serious Serious Serious
Pickering et al, 2014 [35] Low Low Low Low Low Low Low Low
Kamara et al, 2023 [36] Low Low Low Low Low Low Low Low