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Seasonal depression

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https://www.readbyqxmd.com/read/28333994/chronic-environmental-stress-enhances-tolerance-to-seasonal-gradual-warming-in-marine-mussels
#1
Ionan Marigómez, Maria Múgica, Urtzi Izagirre, Inna M Sokolova
In global climate change scenarios, seawater warming acts in concert with multiple stress sources, which may enhance the susceptibility of marine biota to thermal stress. Here, the responsiveness to seasonal gradual warming was investigated in temperate mussels from a chronically stressed population in comparison with a healthy one. Stressed and healthy mussels were subjected to gradual temperature elevation for 8 days (1°C per day; fall: 16-24°C, winter: 12-20°C, summer: 20-28°C) and kept at elevated temperature for 3 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28329660/predictors-of-tanning-dependence-in-white-non-hispanic-females-and-males
#2
Brenda Cartmel, Susan T Mayne, Allen E Bale, Joel Gelernter, Andrew DeWan, David J Leffell, Sherry Pagoto, Peter Spain, Leah M Ferrucci
Growing evidence suggests some individuals may exhibit dependence to ultraviolet light, a known carcinogen; however, few studies have investigated predictors of tanning dependence (TD).A sub-set of early-onset basal cell carcinoma case-control study participants completed an online survey. The modified-Cut down, Annoyed, Guilty, Eye-opener (mCAGE) and a questionnaire based on the addiction criteria of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (mDSM-IV-TR) were used to classify participants having'Symptoms of TD' if they met criteria for TD on both questionnaires, 'Tendency for TD' if met criteria on only one questionnaire, or 'Not TD'...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28293623/patients-experience-of-winter-depression-and-light-room-treatment
#3
Cecilia Rastad, Lennart Wetterberg, Cathrin Martin
Background. There is a need for more knowledge on the effects of light room treatment in patients with seasonal affective disorder and to explore patients' subjective experience of the disease and the treatment. Methods. This was a descriptive and explorative study applying qualitative content analysis. A purposeful sample of 18 psychiatric outpatients with a major depressive disorder with a seasonal pattern and a pretreatment score ≥12 on the 9-item Montgomery-Åsberg Depression self-rating scale was included (10 women and 8 men, aged 24-65 years)...
2017: Psychiatry Journal
https://www.readbyqxmd.com/read/28278268/highs-and-lows-ups-and-downs-meteorology-and-mood-in-bipolar-disorder
#4
Ben Bullock, Greg Murray, Denny Meyer
Seasonal variation of manic and depressive symptoms is a controversial topic in bipolar disorder research. Several studies report seasonal patterns of hospital admissions for depression and mania and variation in symptoms that appear to follow a seasonal pattern, whereas others fail to report such patterns. Differences in research methodologies, data analysis strategies, and temporal resolution of data may partly explain the variation in findings between studies. The current study adds a novel perspective to the literature by investigating specific meteorological factors such as atmospheric pressure, hours of sunshine, relative humidity, and daily maximum and minimum temperatures as more proximal predictors of self-reported daily mood change in people diagnosed with bipolar disorder...
2017: PloS One
https://www.readbyqxmd.com/read/28262145/predictors-of-metabolic-syndrome-in-first-manic-episode
#5
Sermin Kesebir, Boray Erdinç, Nevzat Tarhan
OBJECTIVE: In the present study we aimed to investigate, whether an association between metabolic syndrome (MetS) and clinical features and affective temperaments exists or not in first manic episode of bipolar disorder (BD) and to clarify the prevalence and predictors of MetS. METHOD: A total of 150 patients who were received a diagnosis of bipolar disorder type I according to DSM-IV criteria and who were experiencing their first manic episode (FME) were screened consecutively for inclusion...
February 2017: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/28259037/altered-soluble-epoxide-hydrolase-derived-oxylipins-in-patients-with-seasonal-major-depression-an-exploratory-study
#6
Marie Hennebelle, Yurika Otoki, Jun Yang, Bruce D Hammock, Anthony J Levitt, Ameer Y Taha, Walter Swardfager
Many cytochrome p450-derived lipids promote resolution of inflammation, in contrast to their soluble epoxide hydrolase(sEH)-derived oxylipin breakdown products. Here we compare plasma oxylipins and precursor fatty acids between seasons in participants with major depressive disorder with seasonal pattern (MDD-s). Euthymic participants with a history of MDD-s recruited in summer-fall were followed-up in winter. At both visits, a structured clinical interview (DSM-5 criteria) and the Beck Depression Inventory II (BDI-II) were administered...
February 27, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28228685/a-new-species-of-erythrostemon-leguminosae-caesalpinioideae-from-the-western-r%C3%A3-o-balsas-depression-mexico
#7
Solange Sotuyo, José Luis Contreras-Jiménez, Gwilym P Lewis
A new legume species from a seasonally dry forest of the Western Río Balsas Depression, in the states of Guerrero and Michoacán, Mexico, Erythrostemon guevarafeferii, is herein described and illustrated. The new species shows morphological affinities with Erythrostemon hintonii, from which it is distinguished in having fewer leaflets per pinna, mature leaflets disposed toward the upper half of the pinnae rachises, long inflorescences on curved slender peduncles, abundant red glands on its flowers and inflorescences, and its fruit glabrous with red stipitate glands at maturity...
2017: PhytoKeys
https://www.readbyqxmd.com/read/28212639/erectile-dysfunction-and-exposure-to-ambient-air-pollution-in-a-nationally-representative-cohort-of-older-men
#8
Lindsay A Tallon, Justin Manjourides, Vivian C Pun, Murray A Mittleman, Marianthi-Anna Kioumourtzoglou, Brent Coull, Helen Suh
BACKGROUND: Little is known about the association between air pollution and erectile dysfunction (ED), a disorder occurring in 64% of men over the age of 70, and to date, no studies have been published. To address this significant knowledge gap, we explored the relationship between ED and air pollution in a group of older men who were part of the National Social Life, Health, and Aging Project (NSHAP), a nationally representative cohort study of older Americans. METHODS: We obtained incident ED status and participant data for 412 men (age 57-85)...
February 17, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28192499/vitamin-d-status-in-pediatric-irritable-bowel-syndrome
#9
Benjamin Udoka Nwosu, Louise Maranda, Ninfa Candela
IMPORTANCE: Irritable bowel syndrome (IBS) is associated with significant morbidity in children and adolescents, and the therapeutic efficacy of available treatment options is limited. The role of vitamin D supplementation in pediatric IBS is unclear as the vitamin D status of pediatric patients with IBS is unknown. Equally, the relationship of vitamin D status with psychosomatic symptoms in children and adolescents is unclear. AIM: To characterize the vitamin D status of pediatric patients with IBS using a case-control study design...
2017: PloS One
https://www.readbyqxmd.com/read/28186201/speed-versus-endurance-tradeoff-in-plants-leaves-with-higher-photosynthetic-rates-show-stronger-seasonal-declines
#10
Yong-Jiang Zhang, Lawren Sack, Kun-Fang Cao, Xue-Mei Wei, Nan Li
We tested for a tradeoff across species between plant maximum photosynthetic rate and the ability to maintain photosynthesis under adverse conditions in the unfavorable season. Such a trade-off would be consistent with the observed trade-off between maximum speed and endurance in athletes and some animals that has been explained by cost-benefit theory. This trend would have importance for the general understanding of leaf design, and would simplify models of annual leaf carbon relations. We tested for such a trade-off using a database analysis across vascular plants and using an experimental approach for 29 cycad species, representing an ancient plant lineage with diversified evergreen leaves...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28182445/state-dependent-alterations-in-inhibitory-control-and-emotional-face-identification-in-seasonal-affective-disorder
#11
Liv V Hjordt, Dea S Stenbæk, Kathrine Skak Madsen, Brenda Mc Mahon, Christian G Jensen, Martin Vestergaard, Ida Hageman, David Meder, Steen G Hasselbalch, Gitte M Knudsen
BACKGROUND: Depressed individuals often exhibit impaired inhibition to negative input and identification of positive stimuli, but it is unclear whether this is a state or trait feature. We here exploited a naturalistic model, namely individuals with seasonal affective disorder (SAD), to study this feature longitudinally. AIM: The goal of this study was to examine seasonal changes in inhibitory control and identification of emotional faces in individuals with SAD...
February 9, 2017: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/28154539/temporal-association-of-certain-neuropsychiatric-disorders-following-vaccination-of-children-and-adolescents-a-pilot-case-control-study
#12
Douglas L Leslie, Robert A Kobre, Brian J Richmand, Selin Aktan Guloksuz, James F Leckman
BACKGROUND: Although the association of the measles, mumps, and rubella vaccine with autism spectrum disorder has been convincingly disproven, the onset of certain brain-related autoimmune and inflammatory disorders has been found to be temporally associated with the antecedent administration of various vaccines. This study examines whether antecedent vaccinations are associated with increased incidence of obsessive-compulsive disorder (OCD), anorexia nervosa (AN), anxiety disorder, chronic tic disorder, attention deficit hyperactivity disorder, major depressive disorder, and bipolar disorder in a national sample of privately insured children...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28135573/retinal-venous-blood-carbon-monoxide-response-to-bright-light-in-male-pigs-a-preliminary-study
#13
Dan A Oren, Magdalena Duda, Katarzyna Kozioł, Maria Romerowicz-Misielak, Anna Koziorowska, Przemysław Sołek, Sławomir Nowak, Magdalena Kulpa, Marek Koziorowski
The physical mechanism by which light is absorbed in the eye and has antidepressant and energizing effects in Seasonal Affective Disorder and other forms of psychiatric major depression is of scientific interest. This study was designed to explore one specific aspect of a proposed humoral phototransduction mechanism, namely that carbon monoxide (CO) levels increase in retinal venous blood in response to bright light. Eleven mature male pigs approximately six months of age were kept for 7days in darkness and fasted for 12h prior to surgery...
January 21, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28129487/predictors-of-tanning-dependence-in-white-non-hispanic-females-and-males
#14
B Cartmel, A E Bale, S T Mayne, J E Gelernter, A T DeWan, P Spain, D J Leffell, S Pagoto, L M Ferrucci
BACKGROUND: Growing evidence suggests that some individuals may exhibit symptoms of dependence on ultraviolet (UV) light, a known carcinogen, in the context of tanning; however, few studies have investigated predictors of tanning dependence (TD). OBJECTIVE: To identify predictors of tanning dependence (TD). METHODS: Non-Hispanics of European-ancestry who had previously participated in a case-control study of early-onset basal cell carcinoma completed an online survey to ascertain TD and other behaviors (alcohol dependence, nicotine dependence, seasonal affective disorder (SAD), exercise 'addiction', and depression)...
January 27, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28123670/associations-of-common-chronic-non-communicable-diseases-and-medical-conditions-with-sleep-related-problems-in-a-population-based-health-examination-study
#15
Syaron Basnet, Ilona Merikanto, Tuuli Lahti, Satu Männistö, Tiina Laatikainen, Erkki Vartiainen, Timo Partonen
A cross-sectional population-based survey, the National FINRISK 2012 Study, designed to monitor chronic diseases and their risk factors in Finland. A random sample of 10,000 adults aged 25-74 years, and of them, 64% (n=6424) participated the study. Participants subjectively reported the total durations for sleep and naps (n=6238), sleep quality (n=5878), bedtimes and wake-up times separately for working days and weekends yielding the amount of sleep debt (n=5878), and the seasonal variation in sleep duration (n=4852)...
July 2016: Sleep Science
https://www.readbyqxmd.com/read/28107218/depression-anxiety-and-alcohol-use-in-elite-rugby-league-players-over-a-competitive-season
#16
Etienne J Du Preez, Kenneth S Graham, Thomas Y Gan, Bassam Moses, Chris Ball, Donald E Kuah
OBJECTIVE: To assess the prevalence of symptoms of depression, anxiety, and rates of alcohol misuse in elite rugby league players in Australasia. DESIGN: A cross-sectional, epidemiological study with repeated measures. SETTING: Surveys were conducted during the 2015 preseason and in-season. PARTICIPANTS: Four hundred four elite rugby league players participated preseason and 278 players in-season. MAIN OUTCOME MEASURES: Symptoms of depression were measured using the Patient Health Questionnaire-9 scale, symptoms of generalized anxiety disorder (GAD) with the GAD-7 scale, and the Alcohol Use Disorders Identification Test Consumption scale was used to assess hazardous alcohol use...
January 17, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28098225/the-impacts-of-air-pollution-on-maternal-stress-during-pregnancy
#17
Yanfen Lin, Leilei Zhou, Jian Xu, Zhongcheng Luo, Haidong Kan, Jinsong Zhang, Chonghuai Yan, Jun Zhang
To investigate the association of air pollution with maternal stress during pregnancy, we enrolled 1,931 women during mid-to-late pregnancy in Shanghai in 2010. The "Life-Event Scale for Pregnant Women" and "Symptom-Checklist-90-Revised Scale" (SCL-90-R) were used to evaluate life event stress and emotional stress, respectively. Air pollution data were collected for each district where pregnant women lived during pregnancy. We associated ambient air pollution with stress scores using multivariable logistic regression models...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28073447/potential-impact-of-an-exceptional-bloom-of-karenia-mikimotoi-on-dissolved-oxygen-levels-in-waters-off-western-ireland
#18
Shane O'Boyle, Georgina McDermott, Joe Silke, Caroline Cusack
In the summer of 2005 an exceptional bloom of the dinoflagellate Karenia mikimotoi occurred along Ireland's Atlantic seaboard and was associated with the mass mortality of both benthic and pelagic marine life. Oxygen depletion, cellular toxicity and physical smothering, are considered to be the main factors involved in mortality. In this paper we use a theoretical approach based on stoichiometry (the Anderson ratio) and an average K. mikimotoi cellular carbon content of 329pgCcell(-1) (n=20) to calculate the carbonaceous and nitrogenous oxygen demand following bloom collapse...
March 2016: Harmful Algae
https://www.readbyqxmd.com/read/28056406/the-impact-of-maternal-factors-on-the-association-between-temperature-and-preterm-delivery
#19
Rupa Basu, Hong Chen, De-Kun Li, Lyndsay A Avalos
BACKGROUND: Few studies have examined maternal modifiers of temperature and adverse birth outcomes because of lack of data. We assessed the relationship between apparent temperature, preterm delivery (PTD) and maternal demographics, medical and mental health conditions, and behaviors. METHODS: A time-stratified case-crossover analysis was conducted using 14,466 women who had a PTD (20 to less than 37 gestational weeks) from 1995 to 2009 using medical records from a large health maintenance organization in Northern California...
April 2017: Environmental Research
https://www.readbyqxmd.com/read/28012610/secondary-to-excessive-melatonin-synthesis-the-consumption-of-tryptophan-from-outside-the-blood-brain-barrier-and-melatonin-over-signaling-in-the-pars-tuberalis-may-be-central-to-the-pathophysiology-of-winter-depression
#20
José Carlos Pereira, Márcia Pradella Hallinan, Rosana Cardoso Alves
Seasonal affective disorder is defined as recurrent episodes of major depression, mania, or hypomania with seasonal onset and remission. In this class of mood disturbances, a unipolar major depressive disorder known as winter depression is common in populations living in northern latitudes far from the equator. Winter depression repeatedly occurs in the autumn or winter and remits in the spring or summer, and its etiopathogenesis is currently unknown. However, one can surmise that excessive melatonin production during the reduced duration of daily sunlight in the autumn and winter plays a role in its pathophysiology...
January 2017: Medical Hypotheses
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