MELATONIN PRODUCTION IS SIMILAR IN CHILDREN WITH MONOSYMPTOMATIC NOCTURNAL ENURESIS OR OTHER FORMS OF ENURESIS/INCONTINENCE AND IN CONTROLS
2001; Lippincott Williams & Wilkins; Volume: 166; Issue: 6 Linguagem: Inglês
10.1016/s0022-5347(05)65603-0
ISSN1527-3792
AutoresVeronika Kirchlechner, B. HOFFMANN-EHRHART, József Kovács, Franz Waldhauser,
Tópico(s)Ion Transport and Channel Regulation
ResumoNo AccessJournal of UrologyPEDIATRIC UROLOGY: International Children's Continence Society1 Dec 2001MELATONIN PRODUCTION IS SIMILAR IN CHILDREN WITH MONOSYMPTOMATIC NOCTURNAL ENURESIS OR OTHER FORMS OF ENURESIS/INCONTINENCE AND IN CONTROLS V. KIRCHLECHNER, B. HOFFMANN-EHRHART, J. KOVACS, and F. WALDHAUSER V. KIRCHLECHNERV. KIRCHLECHNER More articles by this author , B. HOFFMANN-EHRHARTB. HOFFMANN-EHRHART More articles by this author , J. KOVACSJ. KOVACS More articles by this author , and F. WALDHAUSERF. WALDHAUSER More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(05)65603-0AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: Monosymptomatic nocturnal enuresis is a disorder, the precise etiology and pathomechanism of which remain unknown. An elevated sleep arousal threshold leading to deep sleep, and an amplitude disturbance in circadian arginine vasopressin secretion and urine production have been suggested as possible causes of the disease. The pineal hormone melatonin is allegedly implicated in the physiological sleep mechanism and circadian system. Melatonin serum levels are high at night and low during the day. The major metabolite of melatonin, 6-hydroxy-melatonin-sulfate (aMT6s), is excreted in the urine and is a good indicator of its production. We explore whether alterations in melatonin secretion assessed by its aMT6s excretion might be implicated in the pathomechanism of monosymptomatic nocturnal enuresis. Materials and Methods: Urine was collected for 24-hour periods from 44 children with monosymptomatic nocturnal enuresis, 10 children with other forms of enuresis/incontinence (nonmonosymptomatic nocturnal enuresis) and 25 controls, and its aMT6s concentration was estimated using a commercially available radioimmunoassay. The total amount of aMT6s excreted per day was calculated. Results: We found no significant differences in the amount of aMT6s excreted in a 24-hour period among patients with or without monosymptomatic nocturnal enuresis and controls with values of 17.6 μg. (1st to 3rd percentile 10.0 to 27.8) versus 13.4 (9.1 to 19.6) versus 21.5 (13.5 to 31.4), respectively. If aMT6s excretion was related to body weight, the result did not change. Conclusions: Our data do not indicate that alterations in melatonin production might be involved in the elevation of the sleep arousal threshold associated with deep sleep in children with monosymptomatic nocturnal enuresis. References 1 : Standardization and definitions in lower urinary tract dysfunction in children. International Children’s Continence Society. Br J Urol, suppl.1998; 81: 1. Google Scholar 2 : The pathophysiology of enuresis in children and young adults. Clin Pediatr Phila1993; 1: 5. Google Scholar 3 : Abnormal diurnal rhythm of plasma vasopressin and urinary output in patients with enuresis. Am J Physiol,.1989; 256: F664. Google Scholar 4 : Desmopressin in the treatment of severe nocturnal enuresis in adolescents—a 7-year follow-up study. Br J Urol, suppl.1998; 81: 17. Google Scholar 5 : Long-term use and tapered dose reduction of intranasal desmopressin in the treatment of enuretic children. Br J Urol, suppl.1998; 81: 24. Google Scholar 6 : Desmopressin acetate and nocturnal enuresis: how much do we know?. Pediatrics1993; 92: 420. Google Scholar 7 : Hyponatriämie mit zerebralem Krampfanfall. Komplikation einer Behandlung mit Desmopressin bei Enuresis nocturna. Monatsschrift Kinderheilkunde2000; 148: 768. Google Scholar 8 : Regulation of arginine vasopressin in enuretic children under fluid restriction. Pediatrics1999; 103: 452. Google Scholar 9 : The efficacy of DDAVP is related to the circadian rhythm of urine output in patients with persisting nocturnal enuresis. Clin Endocrinol Oxf1998; 49: 793. Google Scholar 10 : Elevated sleep arousal thresholds in enuretic boys: clinical implications. Acta Paediatr1997; 86: 381. Google Scholar 11 : Changes in the structure of sleep spindles and delta waves on electroencephalography in patients with nocturnal enuresis. Br J Urol, suppl.1998; 81: 72. Google Scholar 12 : Depth of sleep and sleep habits among enuretic and incontinent children. Acta Paediatr1999; 88: 748. Google Scholar 13 : Factors related to the age of attainment of nocturnal bladder control: an 8-year longitudinal study. Pediatrics1986; 78: 884. Crossref, Medline, Google Scholar 14 : Molecular genetics of nocturnal enuresis: clinical and genetic heterogeneity. Acta Paediatr1998; 87: 571. Google Scholar 15 : Molecular genetics of nocturnal enuresis: linkage to a locus on chromosome 22. Scand J Urol Nephrol, suppl.1999; 202: 76. Google Scholar 16 : Total genome scan analysis in a single extended family for primary nocturnal enuresis: evidence for a new locus (ENUR3) for primary nocturnal enuresis on chromosome 22q11. Eur Urol, suppl.1998; 33: 34. Google Scholar 17 : Human melatonin suppression by light is intensity dependent. J Pineal Res1989; 6: 149. Google Scholar 18 : Melatonin in humans. N Engl J Med1997; 336: 186. Google Scholar 19 : Melatonin and the Mammalian Pineal Gland. London: Chapman & Hall1995. Google Scholar 20 : The metabolism of melatonin (N-acetyl-5methoxytryptamine) and 5-methoxytryptamine. J Biol Chem1961; 236: 3214. Google Scholar 21 : Immunoassay of 6-hydroxymelatonin sulfate in human plasma and urine: abolition of the urinary 24-hour rhythm with atenolol. J Clin Endocrinol Metab1985; 60: 1166. Google Scholar 22 : Melatonin secretion in humans assessed by measuring its metabolite, 6-sulfatoxymelatonin. Clin Chem1987; 33: 1343. Google Scholar 23 : Measurement of urinary melatonin—a useful tool for monitoring serum melatonin after its oral administration. J Clin Endocrinol Metab2000; 85: 666. Google Scholar 24 : Melatonin. Fed Proc1960; 19: 590. Google Scholar 25 : Age-related changes in melatonin levels in man and its potential consequences for sleep disorder. Exp Gerontol1998; 33: 759. Google Scholar 26 : Effects of low oral doses of melatonin, given 2–4 hours before habitual bedtime, on sleep in normal young humans. Sleep1996; 19: 423. Google Scholar 27 : Melatonin: a sleep-promoting hormone. Sleep1997; 20: 899. Google Scholar 28 : Melatonin administration can entrain the free-running circadian system of blind subjects. J Endocrinol2000; 164: R1. Google Scholar 29 : Treatment of circadian rhythm disorders—melatonin. Chronobiol Int1997; 14: 185. Google Scholar 30 : Subtypes in monosymptomatic nocturnal enuresis. II. Scand J Urol Nephrol, suppl.1999; 202: 8. Google Scholar 31 : Factors influencing urinary 6-sulphatoxymelatonin, a major melatonin metabolite, in normal human subjects. Clin Endocrinol Oxf1990; 33: 435. Google Scholar 32 : Constant pineal output and increasing body mass account for declining melatonin levels during human growth and sexual maturation. J Pineal Res1988; 5: 71. Google Scholar 33 : 6-Hydroxymelatonin sulfate excretion in human puberty. J Pineal Res1996; 21: 225. Google Scholar 34 : Melatonin metabolite excretion during childhood and puberty. J Clin Endocrinol Metab1982; 55: 311. Google Scholar 35 : Fall in nocturnal serum melatonin during prepuberty and pubescence. Lancet1984; 1: 362. Google Scholar 36 : Alterations in nocturnal serum melatonin levels in humans with growth and aging. J Clin Endocrinol Metab1988; 66: 648. Google Scholar 37 : Melatonin and ageing. In: Melatonin—Clinical Perspectives. Edited by . Oxford: Oxford University Press1988: 174. Google Scholar 38 : Melatonin secretion as a mediator of circadian variations in sleep and sleepiness. J Pineal Res1985; 2: 301. Google Scholar 39 : Sleep and melatonin in infants: a preliminary study. Sleep1997; 20: 185. Google Scholar 40 : The therapeutics of melatonin: a paediatric perspective. Brain Dev2000; 22: 213. Google Scholar 41 : Characteristics of circadian rhythms in human functions. J Neural Transm, suppl.1986; 21: 323. Google Scholar 42 : Principles of clinical chronobiology. In: Biologic Rhythms in Clinical and Laboratory Medicine. Berlin: Springer-Verlag1992: 6. Google Scholar 43 : Circadian and sleep-dependent regulation of hormone release in humans. Recent Prog Horm Res1999; 54: 97. Google Scholar From the Department of Pediatrics, University of Vienna, Vienna, Austria© 2001 by American Urological Association, Inc.FiguresReferencesRelatedDetails Volume 166Issue 6December 2001Page: 2407-2410 Advertisement Copyright & Permissions© 2001 by American Urological Association, Inc.Keywordscircadian rhythmsleepmelatoninenuresisMetricsAuthor Information V. KIRCHLECHNER More articles by this author B. HOFFMANN-EHRHART More articles by this author J. KOVACS More articles by this author F. WALDHAUSER More articles by this author Expand All Advertisement PDF downloadLoading ...
Referência(s)