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Comparative study of sodium, potassium, ionized calcium, urea and creatinine circadian rhythm documented in samples of capillary and venous blood from healthy subjects.

Baghdassarian RA, Aghadadian SN, Hairapetian TV, Yeghian VA, Burshtein GY, Filian JP.
PMID: 2350984
Chronobiologia. 1990 Jan-Mar;17(1):15-25.

Circadian rhythms of sodium, potassium, ionized calcium, creatinine and urea concentrations were determined in venous and capillary blood of practically healthy volunteers (10 women and 8 men). Electrolytes were determined on the ionoselective analyzer Microlyte (KONE, Finland). Circadian rhythmicity...

Circadian variations of catecholamines and blood pressure in patients with pseudohypoparathyroidism and hypertension.

Brickman AS, Stern N, Sowers JR.
PMID: 2350986
Chronobiologia. 1990 Jan-Mar;17(1):37-44.

The relationship between 24-h recumbent blood pressure levels and secretory patterns of catecholamines was investigated in 4 patients with pseudohypoparathyroidism (PsHP) and hypertension and in 9 patients with essential hypertension. A clear circadian rhythm of blood pressure and catecholamines...

Circadian variation in blood pressure: considerations for therapy.

Raftery EB.
PMID: 1839445
Postgrad Med J. 1991;67:S9-14.

Accurate measurement of blood pressure is a primary requirement of studies in hypertension and its treatment. However, this is not an easy objective to achieve with sphygmomanometric methods of measurement. Intra-arterial monitoring is an objective method of blood pressure...

[Free course of circadian rhythms in Trigonoscelis gigas beetles after space flight].

Alpatov AM, Evstratov IuA, Chernyshev VB, Lebedev MI, Zotov VA.
PMID: 2625974
Kosm Biol Aviakosm Med. 1989 Nov-Dec;23(6):31-3.

Before and after space flight on Cosmos-1887 motor activity of Trigonoscelis gigas beetles kept in darkness was recorded. After flight 6 out of 7 beetles showed reduction of periods of free running circadian rhythms. The fact that the change...

Daytime fluctuations of plasminogen activator inhibitor 1 (PAI-1) in populations with high PAI-1 levels.

Juhan-Vague I, Alessi MC, Raccah D, Aillaud MF, Billerey M, Ansaldi J, Philip-Joet C, Vague P.
PMID: 1615488
Thromb Haemost. 1992 Jan 23;67(1):76-82.

The mechanism underlying diurnal variations in PAI-1 as well as the cellular origin of PAI-1 in subjects with high PAI-1 levels are unknown. We evaluated diurnal changes (8:00 am vs 4:00 pm) in PAI-1 (functional and immunological assays), t-PA...

[Effect of sleep apnea on volume regulating hormone systems--indications for complex disorders of volume regulation].

Ehlenz K, Peter JH, von Wichert P, Kaffarnik H.
PMID: 1839110
Z Kardiol. 1991;80:97-8.

No abstract available.

Effects of amlodipine on circadian rhythms in blood pressure, heart rate, and motility: a telemetric study in rats.

Mattes A, Lemmer B.
PMID: 1839243
Chronobiol Int. 1991;8(6):526-38. doi: 10.3109/07420529109059188.

In male Wistar rats [light(L): 07:00-19:00 h, dark(D): 19:00-07:00 h], the effects of the calcium channel blocker amlodipine (1, 3, 10 mg/kg i.p.) on blood pressure, heart rate, and motor activity were studied by telemetric monitoring. Amlodipine was injected...

Circadian rhythm of rectal temperature in man with two different types of clothing.

Jeong WS, Tokura H.
PMID: 2379959
Int Arch Occup Environ Health. 1990;62(4):295-8. doi: 10.1007/BF00640836.

We compared the circadian rhythm of human rectal temperature with two different types of clothing at an ambient temperature of 27.5 degrees +/- 0.5 degrees C and a relative humidity of 40 +/- 10%. One clothing covered the whole...

Circadian rhythm of peak expiratory flow in children passively exposed and not exposed to cigarette smoke.

Casale R, Natali G, Colantonio D, Pasqualetti P.
PMID: 1481180
Thorax. 1992 Oct;47(10):801-3. doi: 10.1136/thx.47.10.801.
Free PMC Article

BACKGROUND: Because airway calibre shows a circadian rhythm and since exposure to passive smoking reduced lung function this study was undertaken to investigate whether passive smoking affects the circadian rhythm of peak expiratory flow (PEF) in schoolchildren.METHODS: Twenty schoolchildren...

Precise conservation of NREM period 1 (NREMP1) delta across naps and nocturnal sleep: implications for REM latency and NREM/REM alternation.

Feinberg I, Maloney T, March JD.
PMID: 1455122
Sleep. 1992 Oct;15(5):400-3. doi: 10.1093/sleep/15.5.400.

The delta integrated amplitude (DIA) in nonrapid eye movement period 1 (NREMP1) of daytime naps was precisely subtracted from the NREMP1s of ensuing nocturnal sleep, indicating that the brain can retain a record of DIA expressed in sleep episodes...

Nocturnal variations in lower-leg subcutaneous blood flow in paraplegic men.

Sindrup JH, Wroblewski H, Kastrup J, Biering-Sørensen F.
PMID: 1310917
Clin Sci (Lond). 1992 Jan;82(1):47-54. doi: 10.1042/cs0820047.

1. Lower-leg subcutaneous adipose tissue blood flow rates were measured over 12-20 h under ambulatory conditions by means of the 133Xe-washout technique in nine paraplegic men, all with complete spinal cord lesions at or below the Th 6 level,...

The circadian rhythm of body temperature.

Refinetti R, Menaker M.
PMID: 1523238
Physiol Behav. 1992 Mar;51(3):613-37. doi: 10.1016/0031-9384(92)90188-8.

This paper reviews the literature on the circadian rhythm of body temperature (CRT). The review starts with a brief discussion of methodological procedures followed by the description of known patterns of oscillation in body temperature, including ultradian and infradian...

Showing 1 to 12 of 22851 entries