Influence of melatonin and photoperiod on animal and human reproduction

Cagnacci, Angelo; Volpe, Annibale

doi:10.1007/bf03344974

Cited by 58 publications

(23 citation statements)

References 364 publications

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“…Moreover, seasonal changes in photoperiod are believed to affect the reproductive system (Roenneberg and Aschoff 1990a). Studies on non-human mammals suggest that darkness stimulates while light hinders the production of a neurohormone melatonin by the pineal gland and melatonin regulates ovulation and spermatogenesis also in humans (Cagnacci and Volpe 1996;Wehr 2001).…”

Section: Introductionmentioning

confidence: 99%

Birth Seasonality in Present-Day Italy, 1993–2005

Manfredini

2009

Hum Ecol

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Section: Introductionmentioning

confidence: 99%

Birth Seasonality in Present-Day Italy, 1993–2005

Manfredini

2009

Hum Ecol

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“…Thus, seasonal variations in human fecundability [11] and sperm parameters [12] have been reported. Also, human reproduction is believed to be dependent on photoperiod and temperature [13], and the occurrence of ectopic pregnancy shows seasonal variation [14]. Phillips and Young [15] found that obesity in adult life showed a significant association with the month of birth, particularly following cold winters.…”

Section: /Forsgren/nilsson/adolfssonmentioning

confidence: 99%

Season of Birth Variations in the Temperament and Character Inventory of Personality in a General Population

Chotai

Forsgren²,

Nilsson³

et al. 2001

Neuropsychobiology

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Background: Since several studies show season of birth variations in morbidity, suicidal behavior and CSF (cerebrospinal fluid) monoamine metabolites, we investigated season of birth variations in personality in the population. Methods: We analyzed by multiple logistic regressions the Temperament and Character Inventory (TCI) for 2,130 individuals taking part in the Betula prospective random cohort study of Umeå, Sweden. Results: The personality dimensions were correlated significantly with age and gender. We stratified the data according to age, gender and the season of TCI measurement. By the median split in each stratum, a high-value group and a low-value group were obtained for each of the personality dimensions. Those born during February to April were significantly more likely than those born during October to January to have high NS (novelty seeking) among women, particularly the subscale NS2 (impulsiveness vs. reflection), and to have high PS (persistence) among men. Temperament profiles also showed season of birth variations. Conclusions: We discuss the associations in the literature between personality and the monoamines serotonin and dopamine, and suggest that our results are compatible with a hypothesis of season of birth variation in the monoamine turnover. The personality traits are likely to be influenced by several genetic and environmental factors, one of them being the season of birth.

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“…The data that are available in the literature suggest that melatonin has a negative effect on testicular functions [4,5,15,23]. These inhibitory effects of melatonin are primarily exerted via the hypothalamo-hypophysial axis [16,19,28,34].…”

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confidence: 99%