keyword
MENU ▼
Read by QxMD icon Read
search

Chronobiology

keyword
https://www.readbyqxmd.com/read/29773951/the-role-of-neuroinflammation-and-neurovascular-dysfunction-in-major-depressive-disorder
#1
REVIEW
Sang Won Jeon, Yong-Ku Kim
Although depression has generally been explained with monoamine theory, it is far more multifactorial, and therapies that address the disease's pathway have not been developed. In this context, an understanding of neuroinflammation and neurovascular dysfunction would enable a more comprehensive approach to depression. Inflammation is in a sense a type of allostatic load involving the immune, endocrine, and nervous systems. Neuroinflammation is involved in the pathophysiology of depression by increasing proinflammatory cytokines, activating the hypothalamus-pituitary-adrenal axis, increasing glucocorticoid resistance, and affecting serotonin synthesis and metabolism, neuronal apoptosis and neurogenesis, and neuroplasticity...
2018: Journal of Inflammation Research
https://www.readbyqxmd.com/read/29772573/chronobiology
#2
(no author information available yet)
No abstract text is available yet for this article.
May 17, 2018: Neuropsychobiology
https://www.readbyqxmd.com/read/29764232/biological-variables-influencing-the-estimation-of-reference-limits
#3
Mustafa K Özçürümez, Rainer Haeckel
Reference limits (RLs) are required to evaluate laboratory results for medical decisions. The establishment of RL depends on the pre-analytical and the analytical conditions. Furthermore, biological characteristics of the sub-population chosen to provide the reference samples may influence the RL. The most important biological preconditions are gender, age, chronobiological influences, posture, regional and ethnic effects. The influence of these components varies and is often neglected. Therefore, a list of biological variables is collected from the literature and their influence on the estimation of RL is discussed...
May 15, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29761749/effects-of-light-and-temperature-on-daily-activity-and-clock-gene-expression-in-two-mosquito-disease-vectors
#4
Gustavo B S Rivas, Rayane Teles-de-Freitas, Márcio G Pavan, José B P Lima, Alexandre A Peixoto, Rafaela Vieira Bruno
Most organisms feature an endogenous circadian clock capable of synchronization with their environment. The most well-known synchronizing agents are light and temperature. The circadian clock of mosquitoes, vectors of many pathogens, drives important behaviors related to vectoral capacity, including oviposition, host seeking, and hematophagy. Main clock gene expression, as well as locomotor activity patterns, has been identified in Aedes aegypti and Culex quinquefasciatus under artificial light-dark cycles...
June 2018: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/29747699/clinical-chronobiology-a-timely-consideration-in-critical-care-medicine
#5
REVIEW
Helen McKenna, Gijsbertus T J van der Horst, Irwin Reiss, Daniel Martin
A fundamental aspect of human physiology is its cyclical nature over a 24-h period, a feature conserved across most life on Earth. Organisms compartmentalise processes with respect to time in order to promote survival, in a manner that mirrors the rotation of the planet and accompanying diurnal cycles of light and darkness. The influence of circadian rhythms can no longer be overlooked in clinical settings; this review provides intensivists with an up-to-date understanding of the burgeoning field of chronobiology, and suggests ways to incorporate these concepts into daily practice to improve patient outcomes...
May 11, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29713692/multimodal-regulation-of-circadian-glucocorticoid-rhythm-by-central-and-adrenal-clocks
#6
Gi Hoon Son, Hyo Kyeong Cha, Sooyoung Chung, Kyungjin Kim
Adrenal glucocorticoids (GCs) control a wide range of physiological processes, including metabolism, cardiovascular and pulmonary activities, immune and inflammatory responses, and various brain functions. During stress responses, GCs are secreted through activation of the hypothalamic-pituitary-adrenal axis, whereas circulating GC levels in unstressed states follow a robust circadian oscillation with a peak around the onset of the active period of a day. A recent advance in chronobiological research has revealed that multiple regulatory mechanisms, along with classical neuroendocrine regulation, underlie this GC circadian rhythm...
May 1, 2018: Journal of the Endocrine Society
https://www.readbyqxmd.com/read/29680419/a-randomised-controlled-trial-of-bright-light-therapy-and-morning-activity-for-adolescents-and-young-adults-with-delayed-sleep-wake-phase-disorder
#7
C Richardson, N Cain, K Bartel, G Micic, B Maddock, M Gradisar
A randomised controlled trial evaluated bright light therapy and morning activity for the treatment of Delayed Sleep-Wake Phase Disorder (DSWPD) in young people. 60 adolescents and young adults (range = 13-24 years, mean = 15.9 ± 2.2 y, 63% f) diagnosed with DSWPD were randomised to receive three weeks of post-awakening Green Bright Light Therapy (∼507 nm) and Sedentary Activity (sitting, watching TV), Green Bright Light Therapy and Morning Activity (standing, playing motion-sensing videogame), Red Light Therapy (∼643 nm) and Sedentary Activity or Red Light Therapy and Morning Activity...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29674188/the-chronobiology-of-blood-pressure-in-pregnancy
#8
REVIEW
Suzanne Pears, Angela Makris, Annemarie Hennessy
This review summarizes the literature to date on the subject of the chronobiology of blood pressure in pregnancy, and more specifically, in the common disease state of high blood pressure in pregnancy or preeclampsia. While the guidelines for treating hypertension in pregnancy use absolute measures to start treatment, they do not take into account the important rhythms of hypertension including nighttime and daytime readings. These variations are likely to have strong impacts on pregnancy outcomes, risk and long-term hypertension risk...
April 7, 2018: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29644946/the-incidence-risk-factors-and-chronobiology-of-acute-myocardial-infarction-ten-years-after-hurricane-katrina
#9
John C Moscona, Matthew N Peters, Rohit Maini, Paul Katigbak, Bradley Deere, Holly Gonzales, Christopher Westley, Hassan Baydoun, Kapil Yadav, Patrick Ters, Ahmad Jabbar, Alaa Boulad, Indrajeet Mahata, Taraka V Gadiraju, Ryan Nelson, Sudesh Srivastav, Anand Irimpen
OBJECTIVE: The purpose of this study was to investigate the 10-year impact of Hurricane Katrina on the incidence of acute myocardial infarction (AMI) along with contributing risk factors and any alteration in chronobiology of AMI. METHODS: A single-center, retrospective, comparison study of AMI incidence was performed at Tulane University Health Sciences Center from 2 years before Hurricane Katrina to 10 years after Hurricane Katrina. A 6-year, pre-Katrina and 10-year, post-Katrina cohort were also compared according to pre-specified demographic, clinical, and chronobiological data...
April 12, 2018: Disaster Medicine and Public Health Preparedness
https://www.readbyqxmd.com/read/29615393/ticking-time-bomb-high-time-for-chronobiological-research
#10
Philip Lewis, Russell G Foster, Thomas C Erren
No abstract text is available yet for this article.
April 3, 2018: EMBO Reports
https://www.readbyqxmd.com/read/29614283/african-striped-mice
#11
Ricardo Mallarino, Neville Pillay, Hopi E Hoekstra, Carsten Schradin
Mallarino et al. introduce the African striped mouse, which is being used in a number of fields of research, including animal behavior, evolutionary developmental biology, and chronobiology.
April 2, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29611174/epidemiology-and-chronobiology-of-out-of-hospital-cardiac-arrest-in-a-subpopulation-of-southern-poland-a-two-year-observation
#12
Stanislaw Szczerbinski, Jakub Ratajczak, Piotr Lach, Jakub Rzeszuto, Przemyslaw Paciorek, Joanna Karlowska-Pik, Bartosz Ziemkiewicz, Malgorzata Jasiewicz, Aldona Kubica
BACKGROUND: Although recent studies indicate temporal variations in the incidence of out-of-hospital cardiac arrest (OHCA), the Polish experience in this research is scarce to date. Epidemiology of OHCA and circadian is evaluated herein, weekly and seasonal variations of OHCA frequency among the adult population of the Opole district, Poland. METHODS: The retrospective analysis of 815 OHCA cases with presumed cardiac etiology was made based on dispatch cards from the Emergency Medical Center in Opole registered during a 2 year period (2006-2007)...
April 3, 2018: Cardiology Journal
https://www.readbyqxmd.com/read/29609867/circadian-health-differs-between-boys-and-girls-as-assessed-by-non-invasive-tools-in-school-aged-children
#13
Gloria Maria Barraco, Nuria Martínez-Lozano, Claudia Vales-Villamarín, María Del Carmen Blaya, Rafael Rios, Juan Antonio Madrid, Paul Fardy, Marta Garaulet
BACKGROUND & AIMS: Assessment of circadian health is confined to adults. However, understanding circadian status of school-aged children is necessary due to its health implications. The aim was to develop 1) a protocol to assess circadian function in school-aged children by combining the best non-invasive tools previously validated in adults; 2) a score to capture circadian function in children including food timing. This protocol will allow to explore gender differences and to compare the circadian function of school-aged children with adults from the same Mediterranean area...
March 21, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29556858/cyclic-vomiting-syndrome-in-children
#14
REVIEW
Anne Donnet, Sylvain Redon
PURPOSE OF REVIEW: Cyclic vomiting syndrome (CVS) is a misrecognized and probably underdiagnosed episodic syndrome associated with migraine, occurring preferentially in childhood. Attacks are stereotyped for each individual, with predictable periodicity. This review summarizes recent clinical and paraclinical observations in this syndrome, and current approaches in explorations and therapeutics. RECENT FINDINGS: Clinical phenotype during prodromal, vomiting, and recovery phases contains visceral and neuropsychological symptoms, but also cranial and systemic symptoms...
March 19, 2018: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/29555485/cognitive-performance-in-adolescents-with-delayed-sleep-wake-phase-disorder-treatment-effects-and-a-comparison-with-good-sleepers
#15
C Richardson, G Micic, N Cain, K Bartel, B Maddock, M Gradisar
The present study aimed to investigate whether Australian adolescents with Delayed Sleep-Wake Phase Disorder have impaired cognitive performance and whether chronobiological treatment for Delayed Sleep-Wake Phase Disorder improves adolescents' sleep, daytime functioning and cognitive performance. Adolescents with Delayed Sleep-Wake Phase Disorder (mean = 15.68 ± 2.1 y, 62% f) reported significantly later sleep timing (d = 1.03-1.45), less total sleep time (d = 0.82) and greater daytime sleepiness (d = 2...
March 16, 2018: Journal of Adolescence
https://www.readbyqxmd.com/read/29548931/chronobiological-regulation-of-psychosocial-and-physiological-outcomes-in-multiple-sclerosis
#16
REVIEW
Elisea De Somma, Rajiv W Jain, Kelvin W C Poon, Kaitlyn A Tresidder, Julia P Segal, Nader Ghasemlou
There is mounting scientific evidence showing the importance of innate biological rhythms on disease onset and progression. Perhaps the most important of these is the circadian rhythm, a cycle of oscillations lasting approximately 24 hours. Recent work has shown that circadian rhythms are intrinsically linked to the immune system in a bidirectional fashion, and disruption of these cycles can contribute to changes in pathology and quality of life (including fatigue, mood, and disability). This is particularly true in diseases of the nervous and immune systems...
March 13, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29543518/the-heart%C3%A2-s-rhythm-n-blues-sex-differences-in-circadian-variation-patterns-of-vagal-activity-vary-by-depressive-symptoms-in-predominantly-healthy-employees
#17
Marc N Jarczok, Corina Aguilar-Raab, Julian Koenig, Michael Kaess, Jeremy C Borniger, Randy J Nelson, Martica Hall, Beate Ditzen, Julian F Thayer, Joachim E Fischer
INTRODUCTION: Successful regulation of emotional states is positively associated to mental health, while difficulties in regulating emotions are negatively associated to overall mental health and in particular associated with anxiety or depression symptoms. A key structure associated to socio-emotional regulatory processes is the central autonomic network. Activity in this structure is associated to vagal activity can be indexed noninvasively and simply by measures of peripheral cardiac autonomic modulations such as heart rate variability...
March 15, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29481559/timing-of-host-feeding-drives-rhythms-in-parasite-replication
#18
Kimberley F Prior, Daan R van der Veen, Aidan J O'Donnell, Katherine Cumnock, David Schneider, Arnab Pain, Amit Subudhi, Abhinay Ramaprasad, Samuel S C Rund, Nicholas J Savill, Sarah E Reece
Circadian rhythms enable organisms to synchronise the processes underpinning survival and reproduction to anticipate daily changes in the external environment. Recent work shows that daily (circadian) rhythms also enable parasites to maximise fitness in the context of ecological interactions with their hosts. Because parasite rhythms matter for their fitness, understanding how they are regulated could lead to innovative ways to reduce the severity and spread of diseases. Here, we examine how host circadian rhythms influence rhythms in the asexual replication of malaria parasites...
February 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29457195/the-association-between-mood-state-and-chronobiological-characteristics-in-bipolar-i-disorder-a-naturalistic-variable-cluster-analysis-based-study
#19
Robert Gonzalez, Trisha Suppes, Jamie Zeitzer, Colleen McClung, Carol Tamminga, Mauricio Tohen, Angelica Forero, Alok Dwivedi, Andres Alvarado
BACKGROUND: Multiple types of chronobiological disturbances have been reported in bipolar disorder, including characteristics associated with general activity levels, sleep, and rhythmicity. Previous studies have focused on examining the individual relationships between affective state and chronobiological characteristics. The aim of this study was to conduct a variable cluster analysis in order to ascertain how mood states are associated with chronobiological traits in bipolar I disorder (BDI)...
February 19, 2018: International Journal of Bipolar Disorders
https://www.readbyqxmd.com/read/29456519/why-don-t-you-go-to-bed-on-time-a-daily-diary-study-on-the-relationships-between-chronotype-self-control-resources-and-the-phenomenon-of-bedtime-procrastination
#20
Jana Kühnel, Christine J Syrek, Anne Dreher
Background: This daily diary study investigates the phenomenon of bedtime procrastination. Bedtime procrastination is defined as going to bed later than intended, without having external reasons for doing so. We highlight the role chronotype (interindividual differences in biological preferences for sleep-wake-times) plays for bedtime procrastination. Moreover, we challenge the view that bedtime procrastination is the result of a lack of self-regulatory resources by investigating momentary self-regulatory resources as a predictor of day-specific bedtime procrastination...
2018: Frontiers in Psychology
keyword
keyword
15490
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"