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core body temperature circadian rhythm review

S Yeim, C Boudebesse, B Etain, F Belliviera
INTRODUCTION: Bipolar disorder is a severe and complex multifactorial disease, characterized by alternance of acute episodes of depression and mania/hypomania, interspaced by euthymic periods. The etiological determinants of bipolar disorder yet, are still poorly understood. For the last 30 years, chronobiology is an important field of investigation to better understand the pathophysiology of bipolar disorder. METHODS: We conducted a review using Medline, ISI Database, EMBase, PsyInfo up to January 2015, using the following keywords combinations: "mood disorder", "bipolar disorder", "depression", "unipolar disorder", "major depressive disorder", "affective disorder", for psychiatric conditions; and "circadian rhythms", "circadian markers", "circadian gene", "clock gene", "melatonin" for circadian rhythms...
September 2015: L'Encéphale
Simon N Archer, Henrik Oster
The mammalian circadian system is a multi-oscillator, hierarchically organised system where a central pacemaker synchronises behavioural, physiological and gene expression rhythms in peripheral tissues. Epidemiological studies show that disruption of this internal synchronisation by short sleep and shift work is associated with adverse health outcomes through mechanisms that remain to be elucidated. Here, we review recent animal and human studies demonstrating the profound effects of insufficient and mistimed sleep on the rhythms of gene expression in central and peripheral tissues...
October 2015: Journal of Sleep Research
Tao Cai, Abner L Notkins
IA-2 and IA-2β are transmembrane proteins of dense-core vesicles (DCV). The deletion of these proteins results in a reduction in the number of DCV and the secretion of hormones and neurotransmitters. As a result, this leads to a variety of pathophysiologic changes. The purpose of this review is to describe these changes, which are characterized by glucose intolerance, female infertility, behavior and learning abnormalities and alterations in the diurnal circadian rhythms of blood pressure, heart rate, spontaneous physical activity and body temperature...
February 2016: Acta Diabetologica
Eirunn Thun, Bjørn Bjorvatn, Elisabeth Flo, Anette Harris, Ståle Pallesen
Sleep deprivation and time of day are both known to influence performance. A growing body of research has focused on how sleep and circadian rhythms impact athletic performance. This review provides a systematic overview of this research. We searched three different databases for articles on these issues and inspected relevant reference lists. In all, 113 articles met our inclusion criteria. The most robust result is that athletic performance seems to be best in the evening around the time when the core body temperature typically is at its peak...
October 2015: Sleep Medicine Reviews
B G Bunney, J Z Li, D M Walsh, R Stein, M P Vawter, P Cartagena, J D Barchas, A F Schatzberg, R M Myers, S J Watson, H Akil, W E Bunney
Conventional antidepressants require 2-8 weeks for a full clinical response. In contrast, two rapidly acting antidepressant interventions, low-dose ketamine and sleep deprivation (SD) therapy, act within hours to robustly decrease depressive symptoms in a subgroup of major depressive disorder (MDD) patients. Evidence that MDD may be a circadian-related illness is based, in part, on a large set of clinical data showing that diurnal rhythmicity (sleep, temperature, mood and hormone secretion) is altered during depressive episodes...
February 2015: Molecular Psychiatry
S D Joustra, R D Thijs, R van den Berg, M van Dijk, A M Pereira, G J Lammers, E J W van Someren, J A Romijn, N R Biermasz
OBJECTIVE: Patients treated for nonfunctioning pituitary macroadenomas (NFMAs) have fatigue and alterations in sleep characteristics and sleep-wake rhythmicity frequently. As NFMAs often compress the optic chiasm, these complaints might be related to dysfunction of the adjacent suprachiasmatic nucleus (SCN). We aimed to explore whether indirect indices of SCN functioning are altered in the long term after surgery for NFMAs. METHODS: We studied 17 NFMA patients in long-term remission after transsphenoidal surgery, receiving adequate and stable hormone replacement for hypopituitarism, and 17 control subjects matched for age, gender, and BMI...
August 2014: European Journal of Endocrinology
Weipeng Teo, Michael J Newton, Michael R McGuigan
Almost all physiological and biochemical processes within the human body follow a circadian rhythm (CR). In humans, the suprachiasmatic nucleus regulates sleep- wake cycle and other daily biorhythms in line with solar time. Due to such daily physiological fluctuations, several investigations on neuromuscular performance have reported a distinct CR during exercise. Generally, peak performances have been found to occur in the early evening, at approximately the peak of core body temperature. The increase in core body temperature has been found to increase energy metabolism, improve muscle compliance and facilitate actin-myosin crossbridging...
2011: Journal of Sports Science & Medicine
Michael J Hasselberg, James McMahon, Kathy Parker
OBJECTIVE: Changes in core body temperature due to heat transfer through the skin have a major influence on sleep regulation. Traditional measures of skin temperature are often complicated by extensive wiring and are not practical for use in normal living conditions. This review describes studies examining the reliability, validity and utility of the iButton®, a wireless peripheral thermometry device, in sleep/wake research. METHODS: A review was conducted of English language literature on the iButton as a measure of circadian body temperature rhythms associated with the sleep/wake cycle...
January 2013: Sleep Medicine
Dawit A Weldemichael, George T Grossberg
Circadian Rhythm Disturbances (CRDs) affect as many as a quarter of Alzheimer's disease (AD) patients during some stage of their illness. Alterations in the suprachiasmatic nucleus and melatonin secretion are the major factors linked with the cause of CRDs. As a result, the normal physiology of sleep, the biological clock, and core body temperature are affected. This paper systematically discusses some of the causative factors, typical symptoms, and treatment options for CRDs in patients with AD. This paper also emphasizes the implementation of behavioral and environmental therapies before embarking on medications to treat CRDs...
2010: International Journal of Alzheimer's Disease
V Soria, M Urretavizcaya
Some core symptoms of major depression show a circadian rhythm in their clinical manifestations or are intimately linked to the circadian system functioning, such as sleep-wake cycle. Moreover, abnormalities in circadian rhythms of core body temperature and some endocrine-metabolic parameters have been detected in depressive patients compared to healthy controls. The circadian rhythm disturbances described in depressive states as well as the efficacy and fast onset of action of chronobiological based treatments point out the circadian system as an therapeutic target in the treatment of depression...
July 2009: Actas Españolas de Psiquiatría
Yujiro Yamanaka, Sato Honma, Ken-ichi Honma
In humans, studies using temporal isolation unit have indicated that (1) bright light is a dominant zeitgeber in human circadian systems and (2) period of endogenous circadian rhythms is longer than 24 h. The human circadian systems have at least two unique features. First is an internal desynchronization in which period of core body temperature rhythm and sleep-wake cycle free-run with different periods. Internal desynchronization indicates that the human circadian system consists of two different oscillators...
August 2009: Nihon Rinsho. Japanese Journal of Clinical Medicine
Borzoo Farhang, Shanna Diaz, Stephanie L Tang, Edward J Wagner
This review highlights the progress made thus far in characterizing the behavioral and cellular mechanisms through which cannabinoids regulate energy homeostasis. We performed microstructural analysis of feeding behavior in gonadectomized guinea pigs and gonadally intact, transgenic CB1 receptor knockout mice to determine how cannabinoids affect circadian rhythms in food intake and meal pattern. We also implanted data loggers into the abdominal cavity to correlate the appetite-modulating properties of cannabinoids with changes in core body temperature...
December 2009: Psychoneuroendocrinology
Wytske Aelig Hofstra, Al Wytze de Weerd
Knowledge on the interaction between circadian rhythm and human epilepsy is relatively poor, although if it exists, this interaction may be of value for better knowledge of pathophysiology and for timing of diagnostic procedures and therapy. It appears that human seizure occurrence may have 24-h rhythmicity, depending on the origin. These findings are endorsed by animal studies. Rats placed in constant darkness showed spontaneous limbic seizures occurring in an endogenously mediated circadian pattern. More studies are available on the influence of epilepsy on circadian rhythms...
December 2009: Sleep Medicine Reviews
Andrea Kurz
Core body temperature is one of the most tightly regulated parameters of human physiology. At any given time, body temperature differs from the expected value by no more than a few tenths of a degree. However, slight daily variations are due to circadian rhythm, and, in women, monthly variations are due to their menstrual cycle. Importantly, both anesthesia and surgery dramatically alter this delicate control, and as a result intraoperative core temperatures 1 to 3 degrees C below normal are not uncommon. Consequently, perioperative hypothermia leads to a number of complications including postoperative shivering (which unacceptably increases patients' metabolic rates), impaired coagulation, prolonged drug action, and negative postoperative nitrogen balance...
December 2008: Best Practice & Research. Clinical Anaesthesiology
Bjørn Bjorvatn, Ståle Pallesen
Circadian rhythm sleep disorders are common in clinical practice. The disorders covered in this review are delayed sleep phase disorder, advanced sleep phase disorder, free-running, irregular sleep-wake rhythm, jet lag disorder and shift work disorder. Bright light treatment and exogenous melatonin administration are considered to be the treatments of choice for these circadian rhythm sleep disorders. Circadian phase needs to be estimated in order to time the treatments appropriately. Inappropriately timed bright light and melatonin will likely worsen the condition...
February 2009: Sleep Medicine Reviews
Wytske A Hofstra, Al W de Weerd
It is well known that seizures of some types of epilepsy tend to occur in patterns. The circadian rhythm may play a significant role in this phenomenon. In animal studies it has been found that seizures in experimental partial epilepsy are probably under the influence of the biological clock. In this review an introduction to the influence of the human circadian rhythm in epilepsy is given. Furthermore, the methodology of measuring the circadian rhythm in humans is explored. An overview of widely used methods includes protocols used to desynchronize circadian rhythm, and sleep-wake and biological markers such as the dim light melatonin onset, core body temperature, and cortisol that are employed to determine the phase of the circadian rhythm...
October 2008: Epilepsy & Behavior: E&B
D C Deecher, K Dorries
Vasomotor symptoms (VMS), commonly called hot flashes or flushes (HFs) and night sweats, are the menopausal symptoms for which women seek treatment during menopause most often. VMS are a form of temperature dysfunction that occurs due to changes in gonadal hormones. Normally, core body temperature (CBT) remains within a specific range, oscillating with daily circadian rhythms. Physiological processes that conserve and dissipate heat are responsible for maintaining CBT, and tight regulation is important for maintenance of optimal internal organ function...
2007: Archives of Women's Mental Health
Robert L Sack, Dennis Auckley, R Robert Auger, Mary A Carskadon, Kenneth P Wright, Michael V Vitiello, Irina V Zhdanova
OBJECTIVE: This the second of two articles reviewing the scientific literature on the evaluation and treatment of circadian rhythm sleep disorders (CRSDs), employing the methodology of evidence-based medicine. We herein report on the accumulated evidence regarding the evaluation and treatment of Advamced Sleep Phase Disorder (ASPD), Delayed Sleep Phase Disorder (DSPD), Free-Running Disorder (FRD) and Irregular Sleep-Wake Rhythm ISWR). METHODS: A set of specific questions relevant to clinical practice were formulated, a systematic literature search was performed, and relevant articles were abstracted and graded...
November 2007: Sleep
Robert L Sack, Dennis Auckley, R Robert Auger, Mary A Carskadon, Kenneth P Wright, Michael V Vitiello, Irina V Zhdanova
OBJECTIVE: This the first of two articles reviewing the scientific literature on the evaluation and treatment of circadian rhythm sleep disorders (CRSDs), employing the methodology of evidence-based medicine. In this first part of this paper, the general principles of circadian biology that underlie clinical evaluation and treatment are reviewed. We then report on the accumulated evidence regarding the evaluation and treatment of shift work disorder (SWD) and jet lag disorder (JLD). METHODS: A set of specific questions relevant to clinical practice were formulated, a systematic literature search was performed, and relevant articles were abstracted and graded...
November 2007: Sleep
Kurt Kräuchi
This article reviews circadian thermoregulation in relation to sleep induction and phase of entrainment in the light of the comprehensive thermophysiological and chronobiological concepts of Jürgen Aschoff. The idea that temperature and sleep are interrelated is based on evolutionary history. Mammalian sleep developed in association with endothermy, and all species, independent of temporal niche, usually sleep during the circadian trough of their core body temperature (CBT) rhythm. The circadian pattern of CBT results from the balance between heat production and heat loss, the latter being relevant for sleep induction...
December 2007: Sleep Medicine Reviews
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