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Seasonal affective disorder

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https://www.readbyqxmd.com/read/28780278/season-independent-cognitive-deficits-in-seasonal-affective-disorder-and-their-relation-to-depressive-symptoms
#1
Liv Vadskjær Hjordt, Dea Siggaard Stenbæk, Brice Ozenne, Brenda Mc Mahon, Ida Hageman, Steen Gregers Hasselbalch, Gitte Moos Knudsen
Although cognitive impairments are common in depressed individuals, it is unclear which aspects of cognition are affected and whether they represent state or trait features of depression. We here exploited a naturalistic model, namely the seasonal fluctuations in depressed status in individuals with Seasonal Affective Disorder (SAD), to study depression-related cognition, longitudinally. Twenty-nine medication-free individuals diagnosed with winter-SAD and 30 demographically matched healthy controls with no seasonality symptoms completed the Letter-number Sequencing task (LNS), the Symbol Digit Modalities Test (SDMT) and the Simple Reaction Time (SRT) twice; in summer and in winter...
July 30, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28778237/depression-and-hypersomnia-a-complex-association
#2
REVIEW
Régis Lopez, Lucie Barateau, Elisa Evangelista, Yves Dauvilliers
Hypersomnolence is a clinically defined syndrome characterized by the association of prolonged nocturnal sleep, impaired arousal quality, and sleep inertia. Hypersomnolence is the major feature of central hypersomnias and is frequently reported in various mood disorders, such as major depressive disorder, bipolar disorder, or seasonal affective disorder. Assessment of hypersomnolence is challenging in depressed patients, with objective tests often in the normal range despite a high level of sleepiness complaint...
September 2017: Sleep Medicine Clinics
https://www.readbyqxmd.com/read/28774755/human-seasonal-and-circadian-studies-in-antarctica-halley-75-0-s
#3
Josephine Arendt, Benita Middleton
Living for extended periods in Antarctica exposes base personnel to extremes of daylength (photoperiod) and temperature. At the British Antarctic Survey base of Halley, 75(0)S, the sun does not rise for 110 d in the winter and does not set for 100 d in summer. Photoperiod is the major time cue governing the timing of seasonal events such as reproduction in many species. The neuroendocrine signal providing photoperiodic information to body physiology is the duration of melatonin secretion which reflects the length of the night: longer in the short days of winter and shorter in summer...
July 31, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28759763/trends-in-biomarkers-biotic-indices-and-fish-population-size-revealed-contrasting-long-term-effects-of-recycled-water-on-the-ecological-status-of-a-mediterranean-river
#4
Nicole Colin, Alberto Maceda-Veiga, Mario Monroy, Martí Ortega-Ribera, Mireia Llorente, Adolfo de Sostoa
Recycled water is important for maintaining river flow in semi-arid regions. However, it has ecological risk, as suggested by comparison of habitat and white and red blood cell count in two wild fish species (Barbus meridionalis and Squalius laietanus) before and after an input of recycled water in Ripoll River (NE Spain) in 2009. Due to the lack of normal ranges for blood variables in wild fish, we surveyed seasonally the same river reaches in 2013 to test if blood alterations from 2009 compromised the viability of the fish populations...
July 27, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28711512/seasonality-in-affective-disorders
#5
REVIEW
Anna Wirz-Justice
Humans retain neurobiological responses to circadian day-night cycles and seasonal changes in daylength in spite of a life-style usually independent of dawn-dusk signals. Seasonality has been documented in many functions, from mood to hormones to gene expression. Research on seasonal affective disorder initiated the first use of timed bright light as therapy, a treatment since extended to non-seasonal major depression and sleep-wake cycle disturbances in many psychiatric and medical illnesses. The growing recognition that sufficient light is important for psychological and somatic well-being is leading to the development of novel lighting solutions in architecture as well as focus on a more conscious exposure to natural daylight...
July 12, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28708003/arntl-clock-and-per3-polymorphisms-links-with-chronotype-and-affective-dimensions
#6
Konrad S Jankowski, Monika Dmitrzak-Weglarz
Recently, seven single nucleotide polymorphisms (SNPs) of ARNTL, TIM and PER3 genes were found associated with affective temperaments in bipolar disorder patients. This study aimed to test whether a) the same associations appear in a non-clinical sample; b) the SNPs are related to other affective dimensions; c) the SNPs underpin the associations between chronotype and affective temperaments/dimensions. Three hundred thirty-eight university students completed the Temperament Scale of Memphis, Pisa, Paris and San Diego Auto-questionnaire, the Centre for Epidemiological Studies Depression Scale, the Perceived Stress Scale, the General Health Questionnaire, the Seasonal Pattern Assessment Questionnaire and the Composite Scale of Morningness...
July 14, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28707044/seasonal-bushmeat-hunger-in-the-congo-basin
#7
Edmond Dounias, Mitsuo Ichikawa
Unlike the Sudano-sahelian regions, which are confronted to severe periods of food shortage, tropical rainforests are known to provide a constant supply of a great diversity of food resources that mitigates the risk of food starvation for omnivorous humans. Nevertheless, several African forest ethnic groups suffer from a seasonal hunger induced by depletion in the procurement of bushmeat, which is a food of paramount importance. Although the diet remains well balanced and meets all the nutritional needs, the bushmeat cravers loose weight and experience a stress that affects their well-being...
July 13, 2017: EcoHealth
https://www.readbyqxmd.com/read/28693583/prevention-of-seasonal-affective-disorder-in-daily-clinical-practice-results-of-a-survey-in-german-speaking-countries
#8
B Nussbaumer-Streit, D Winkler, M Spies, S Kasper, E Pjrek
BACKGROUND: Seasonal affective disorder (SAD) is a seasonally recurrent type of major depression. This predictable aspect makes it promising for preventive treatment. However, evidence for the efficacy and harm of preventive treatment of SAD is scarce, as are recommendations from clinical practice guidelines. The aim of this study was to assess the current use of preventive treatment of SAD in clinical practice in German-speaking countries for the first time. METHODS: We conducted a postal and web-based survey sent to the heads of all psychiatric institutions listed in the inventory "Deutsches Krankenhaus Adressbuch, 2015" that contains all psychiatric hospitals in Germany, Austria, and Switzerland...
July 11, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28692905/prediction-of-outcome-of-bright-light-treatment-in-patients-with-seasonal-affective-disorder-discarding-the-early-response-confirming-a-higher-atypical-balance-and-uncovering-a-higher-body-mass-index-at-baseline-as-predictors-of-endpoint-outcome
#9
Tzvetelina D Dimitrova, Gloria M Reeves, Soren Snitker, Manana Lapidus, Aamar R Sleemi, Theodora G Balis, Partam Manalai, Muhammad M Tariq, Johanna A Cabassa, Naila N Karim, Mary A Johnson, Patricia Langenberg, Kelly J Rohan, Michael Miller, John W Stiller, Teodor T Postolache
BACKGROUND: We tested the hypothesis that the early improvement in mood after the first hour of bright light treatment compared to control dim-red light would predict the outcome at six weeks of bright light treatment for depressed mood in patients with Seasonal Affective Disorder (SAD). We also analyzed the value of Body Mass Index (BMI) and atypical symptoms of depression at baseline in predicting treatment outcome. METHODS: Seventy-eight adult participants were enrolled...
November 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28686746/obstructive-sleep-apnea-and-objective-short-sleep-duration-are-independently-associated-with-the-risk-of-serum-vitamin-d-deficiency
#10
Ronaldo D Piovezan, Camila Hirotsu, Marcia C Feres, Fatima D Cintra, Monica L Andersen, Sergio Tufik, Dalva Poyares
BACKGROUND: Studies demonstrate an association between vitamin D (25(OH)D) deficiency and sleep disturbances, such as obstructive sleep apnea (OSA) and short sleep duration. However, to date, no studies have concurrently and objectively evaluated the effect of these factors on 25(OH)D. OBJECTIVES: To evaluate whether OSA and objective short sleep duration are independently associated with reduced 25(OH)D in an adult population sample. METHODS: A cross-sectional study included 657 individuals from the city of Sao Paulo, Brazil, as part of the ERA project...
2017: PloS One
https://www.readbyqxmd.com/read/28637048/use-of-light-therapy-by-office-based-physicians
#11
Edda Winkler-Pjrek, Marie Spies, Pia Baldinger-Melich, Lisa Perkmann, Siegfried Kasper, Dietmar Winkler
BACKGROUND: Light therapy (LT) is a non-pharmacological biological treatment that has been used in psychiatry since the 1980s. Previous research has investigated the usage of LT in hospitals. The aim of this study was to examine the pattern of use of LT by office-based physicians. METHODS: A questionnaire was sent by mail to 400 randomly selected doctors in Austria. We made sure that the sample was equally representative of general practitioners (GPs) and psychiatrists, public health service doctors and private doctors, physicians in cities and in the country as well as male and female doctors...
2016: Neuropsychobiology
https://www.readbyqxmd.com/read/28637035/is-there-a-relationship-between-vegetarianism-and-seasonal-affective-disorder-a-pilot-study
#12
Alie N R Meesters, Mirkka Maukonen, Timo Partonen, Satu Männistö, Marijke C M Gordijn, Ybe Meesters
BACKGROUND AND AIM: Seasonal patterns of food intake are found in healthy individuals and particularly in patients with seasonal affective disorder (SAD). One nutritional choice is a vegetarian diet. METHODS: In a Finnish population study, FINRISK 2012, information about diet and SAD was collected. In a Dutch outpatient clinic, SAD patients were asked if they were vegetarian. RESULTS: The percentage of SAD patients among Finnish vegetarians was 4 times higher than in the normal population...
2016: Neuropsychobiology
https://www.readbyqxmd.com/read/28637032/investigation-of-an-immediate-effect-of-bright-light-on-oxygen-consumption-heart-rate-cortisol-and-%C3%AE-amylase-in-seasonal-affective-disorder-subjects-and-healthy-controls
#13
Iana A Ivanova, Konstantin V Danilenko, Lyubomir I Aftanas
BACKGROUND: Body (fat) mass has been shown to decrease following bright light treatment for overweight women, irrespective of their seasonal (light) dependence. It is not known if this is due to an (immediate) increase of metabolism. METHODS: Ten women with seasonal affective disorder (SAD) and 10 non-SAD women matched by age, body mass index, and menopausal status participated in a laboratory study in the morning, twice within 1-5 days. During one session, bright light (4,300 lx) was presented for 30 min, and during the other session, red light (250 lx "placebo") was used...
2016: Neuropsychobiology
https://www.readbyqxmd.com/read/28633582/dopamine-and-light-effects-on-facial-emotion-recognition
#14
Elizabeth Cawley, Maria Tippler, Nicholas J Coupland, Chawki Benkelfat, Diane B Boivin, Marije Aan Het Rot, Marco Leyton
Bright light can affect mood states and social behaviours. Here, we tested potential interacting effects of light and dopamine on facial emotion recognition. Participants were 32 women with subsyndromal seasonal affective disorder tested in either a bright (3000 lux) or dim light (10 lux) environment. Each participant completed two test days, one following the ingestion of a phenylalanine/tyrosine-deficient mixture and one with a nutritionally balanced control mixture, both administered double blind in a randomised order...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28612993/melatonin-as-a-treatment-for-mood-disorders-a-systematic-review
#15
F De Crescenzo, A Lennox, J C Gibson, J H Cordey, S Stockton, P J Cowen, D J Quested
OBJECTIVE: Melatonin has been widely studied in the treatment of sleep disorders and evidence is accumulating on a possible role for melatonin influencing mood. Our aim was to determine the efficacy and acceptability of melatonin for mood disorders. METHOD: We conducted a comprehensive systematic review of randomized clinical trials on patients with mood disorders, comparing melatonin to placebo. RESULTS: Eight clinical trials were included; one study in bipolar, three in unipolar depression and four in seasonal affective disorder...
June 14, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28595969/emergence-and-epidemiology-of-cucurbit-yellow-stunting-disorder-virus-in-the-american-desert-southwest-and-development-of-host-plant-resistance-in-melon
#16
REVIEW
William M Wintermantel, Robert L Gilbertson, Eric T Natwick, James D McCreight
Cucurbit yellow stunting disorder virus (CYSDV), emerged in the Sonoran Desert region of the southwestern USA in 2006 and has become well established. Symptoms induced by CYSDV infection include a striking interveinal chlorosis or yellowing and reduced yield and quality. The virus is transmitted by Bemisia tabaci, and the cryptic species MEAM1 has been present in the region since the early 1990s. CYSDV has now become the most economically important of the viruses affecting cucurbit production in the southwestern US...
June 5, 2017: Virus Research
https://www.readbyqxmd.com/read/28535408/differences-in-clinical-and-cognitive-variables-in-seasonal-affective-disorder-compared-to-depressive-related-disorders-evidence-from-a-population-based-study-in-finland
#17
I Morales-Muñoz, S Koskinen, T Partonen
BACKGROUND: Seasonal affective disorder (SAD) is a type of depression with seasonal pattern. Although it involves some idiosyncratic symptoms, it can overlap with other depressive disorders such as major depressive disorder (MDD) or dysthymia. We aimed to characterize the differences in specific cognitive and clinical symptoms between SAD and depressive-related disorders. METHODS: In total, 4554 Finnish subjects from the population-based Health 2011 Survey were interviewed with the Munich version of Composite International Diagnostic Interview (M-CIDI) and filled in the Seasonal Pattern Assessment Questionnaire (SPAQ)...
March 28, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28526480/human-seasonal-and-circadian-studies-in-antarctica-halley-75-0-s
#18
Josephine Arendt, Benita Middleton
Living for extended periods in Antarctica exposes base personnel to extremes of daylength (photoperiod) and temperature. At the British Antarctic Survey base of Halley, 75(0)S, the sun does not rise for 110 d in the winter and does not set for 100 d in summer. Photoperiod is the major time cue governing the timing of seasonal events such as reproduction in many species. The neuroendocrine signal providing photoperiodic information to body physiology is the duration of melatonin secretion which reflects the length of the night: longer in the short days of winter and shorter in summer...
May 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28511899/signaling-pathways-to-and-from-the-hypophysial-pars-tuberalis-an-important-center-for-the-control-of-seasonal-rhythms
#19
REVIEW
Horst-Werner Korf
Seasonal (circannual) rhythms play an important role for the control of body functions (reproduction, metabolism, immune responses) in nearly all living organisms. Also humans are affected by the seasons with regard to immune responses and mental functions, the seasonal affective disorder being one of the most prominent examples. The hypophysial pars tuberalis (PT), an important interface between the hypophysial pars distalis and neuroendocrine centers in the brain, plays an essential role in the regulation of seasonal functions and may even be the seat of the circannual clock...
May 13, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28432995/eye-disorder-differentiates-seasonality-outcomes-in-persons-with-severe-visual-impairment
#20
Heller Madsen, Henrik Dam, Ida Hageman
BACKGROUND: Light plays a crucial role in both the pathogenesis and treatment of seasonal affective disorder (SAD). Consequently decreased retinal sensitivity to light has been suggested to be a risk factor for SAD. In a population of persons with severe visual impairment we recently found a highly increased prevalence of SAD. We now aimed to identify eye disorders or anatomical locations with specific association to seasonality. METHODS: In 912 cases (33%) from our prior seasonal pattern assessment questionnaire (SPAQ) screening study, we retrieved eye diagnoses from the Danish National Patient Registry and analyzed for specific eye disorders or anatomical locations that significantly differentiated SPAQ outcomes (global seasonality score, (GSS) and SPAQ-SAD prevalence)...
August 1, 2017: Journal of Affective Disorders
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