Weeke J., Laurberg P.: Diurnal TSH variations in hypothyroidism - J. Using a constant routine protocol, thyroid-stimulating hormone (TSH) concentrations reached their maximum and minimum in the middle of the biological night. G.: Circadian and 30 minutes variations in serum TSH and thyroid hormones in normal subjects - Acta endocr. Weeke J.: Circadian variation of the serum thyrotropin level in normal subjects - Scand. This diurnal research bias in ecology, likely driven by a plethora of logistical challenges, is exacerbated in submerged aquatic systems where light is naturally scarce, and where organisms must be studied in situ. C.: Absence of diurnal variation of serum TSH - J. INTRODUCTION Daytime (diurnal) ecological studies far outpace nighttime (nocturnal) studies (Gaston, 2019 Park, 1940 ). P., Golstein J.: Circadian variations of serum thyrotropin levels in man - J. Van Cauter E., Leclercq R., van Haelst L., Golstein J.: Simultaneous study of cortisol and TSH daily variations in normal subjects and patients with hyperadrenalcorticism - J. diurnal rodents, and some of them are importantly implicated in the regulation of mood (LHb), research on the mechanisms underlying the effects of NLE on mood-related behavior in diurnal species remains to be explored. D.: Serum thyroid hormone and thyrotropin concentrations during thyroxine and triiodothyronine therapy - J. Since light at night impacts extra-SCN brain regions differentially between nocturnal vs. G.: The 24 hour plasma thyrotropin profile - Clin. M.: Effect of normal and reversed sleep-wake cycles upon nyctohemeral rhythmicity of plasma thyrotropin: evidence suggestive of an inhibitory influence in sleep - J. The circadian rhythms of cortisol and TSH being out-of-phase can be explained by the inhibitory influence of cortisol on serum TSH concentrations ( 94 98 ). Diurnal describes happenings that occur during the. The circadian rhythms of TSH and cortisol are out of phase TSH has a nocturnal surge in the early night while cortisol has its nadir around that time and its peak in the early morning. The word nocturnal comes from the Latin word nocturnus, which means belonging to the night. below normal daytime levels.283 Profiles of plasma TSH during normal nocturnal sleep. Nocturnal is an adjective, the adverb form is nocturnally. No circadian rhythm of LH and FSH is detected in constant routine. F.: Thyrotropin-releasing hormone secretory physiology: studies by radioimmunoassay and affinity chromatography - Endocrinology 96, 1413, 1975. Nocturnal describes happenings that occur during the nighttime or plants and animals that are active during the nighttime. Lucke C., Hermann R., von Mayersbach K., von zur Mühlen A.: Studies on circadian variations of plasma TSH, thyroxine and trüodothyronine in man - Acta endocr. Results: The TSH level was significantly higher in shift workers than that in the non-shift workers, whereas free T4 level did not show any difference between. A.: The cellular aspects of biorhythms - In: Proc. A.: The effect of basal hypothalamic deafferentiation on the nyctohemeral rhythm of plasma TSH - Endocrinology 97, 749, 1975. We show that markers for which diurnal variation is not an issue are adrenocorticotropic hormone, follicle stimulating hormone, estradiol and high-density. D.: Thyrotropin-releasing hormone in the hypothalamus of the rat - Endocrinology 94, 188, 1974.įukuda H., Greer M. Saper CB, Lu J, Chou TC, Gooley J (2005) The hypothalamic integrator for circadian rhythms.Bassiri R. PhD thesis, Michigan State University, East Lansing, MIįuller PM, Gooley JJ, Saper CB (2006) Neurobiology of the sleep-wake cycle: sleep architecture, circadian regulation, and regulatory feedback. Mahoney M (2003) Sex, surges and circadian rhythms: The timing of reproductive events in a diurnal rodent. PhD thesis, Michigan State University, East Lansing, MI Nocturnal exercise for 3 hours is capable of inducing a phase. Schwartz MD (2006) Neural substrates of diurnality in the Nile grass rat, Arvicanthis niloticus. Several studies explored the influence of exercise or daytime naps on TSH phase resetting. Smale L, Lee TM, Nunez AA (2003) Mammalian diurnality: Some facts and gaps. Klein D, Moore RY, Reppert SM (1991) Suprachiasmatic Nucleus: the mind's clock. Stephan FK (2002) The “other” circadian system: food as a zeitgeber, J Biol Rhythms 17:284–292 In: Knobil E, Neill JD (eds) The physiology of reproduction, Raven Press, New York, pp 487–540 Turrek FW, van Cauter E (1994) Rhythms in reproduction. Moore-Ede M, Sulzman F, Fuller C (1983) The clocks that time us.
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