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https://www.readbyqxmd.com/read/29430586/the-antidepressant-effect-of-light-therapy-from-retinal-projections
#1
REVIEW
Xiaotao Li, Xiang Li
Observations from clinical trials have frequently demonstrated that light therapy can be an effective therapy for seasonal and non-seasonal major depression. Despite the fact that light therapy is known to have several advantages over antidepressant drugs like a low cost, minimal side-effects, and fast onset of therapeutic effect, the mechanism underlying light therapy remains unclear. So far, it is known that light therapy modulates mood states and cognitive functions, involving circadian and non-circadian pathways from retinas into brain...
February 12, 2018: Neuroscience Bulletin
https://www.readbyqxmd.com/read/29428773/self-perceived-personality-characteristics-in-seasonal-affective-disorder-and-their-implications-for-severity-of-depression
#2
Liv Vadskjær Hjordt, Vibeke H Dam, Brice Ozenne, Ida Hageman, Brenda Mc Mahon, Erik Lykke Mortensen, Gitte M Knudsen, Dea Siggaard Stenbæk
The personality traits Neuroticism and Extraversion may be involved in the development of seasonal affective disorder (SAD). However, the impact of personality traits on SAD severity and whether such self-reported traits fluctuate with season is unknown. We investigated the association between Neuroticism, as acquired in a symptom-free phase and depression severity in individuals with SAD and seasonal changes in personality traits in individuals with SAD compared to healthy controls. Twenty-nine individuals diagnosed with SAD and thirty demographically matched controls completed the NEO Personality Inventory-Revised and the Major Depression Inventory twice: in summer when individuals with SAD were symptom-free, and in winter when they experienced SAD symptoms...
February 6, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29415516/seasonal-and-spatial-variability-of-anthropogenic-and-natural-factors-influencing-groundwater-quality-based-on-source-apportionment
#3
Xueru Guo, Rui Zuo, Li Meng, Jinsheng Wang, Yanguo Teng, Xin Liu, Minhua Chen
Globally, groundwater resources are being deteriorated by rapid social development. Thus, there is an urgent need to assess the combined impacts of natural and enhanced anthropogenic sources on groundwater chemistry. The aim of this study was to identify seasonal characteristics and spatial variations in anthropogenic and natural effects, to improve the understanding of major hydrogeochemical processes based on source apportionment. 34 groundwater points located in a riverside groundwater resource area in northeast China were sampled during the wet and dry seasons in 2015...
February 6, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29407524/metabolic-inflammatory-vascular-comorbidity-in-psychiatric-disorders-soluble-epoxide-hydrolase-seh-as-a-possible-new-target
#4
REVIEW
W Swardfager, M Hennebelle, D Yu, B D Hammock, A J Levitt, K Hashimoto, A Y Taha
The common and severe psychiatric disorders, including major depressive disorder (MDD) and bipolar disorder (BD), are associated with inflammation, oxidative stress and changes in peripheral and brain lipid metabolism. Those pathways are implicated in the premature development of vascular and metabolic comorbidities, which account for considerable morbidity and mortality, including increased dementia risk. During endoplasmic reticulum stress, the soluble epoxide hydrolase (sEH) enzyme converts anti-inflammatory fatty acid epoxides generated by cytochrome p450 enzymes into their corresponding and generally less anti-inflammatory, or even pro-inflammatory, diols, slowing the resolution of inflammation...
February 2, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29372842/decreased-daytime-light-intensity-at-nonwindow-hospital-beds-comparisons-with-light-intensity-at-window-hospital-beds-and-light-exposure-in-nonhospitalized-elderly-individuals
#5
Junko Iwamoto, Kenji Obayashi, Miwa Kobayashi, Toshimichi Kotsuji, Rie Matsui, Kyoko Ito, Osamu Yoshida, Norio Kurumatani, Keigo Saeki
Light is crucial for the synchronization of internal biological rhythms with environmental rhythms. Hospitalization causes a range of unfavorable medical conditions, including delirium, sleep disturbances, depressed mood, and increased fall, especially in elderly people. The hospital room environment contributes significantly to patients' circadian physiology and behavior; however, few studies have evaluated light intensity in hospital settings. In this study, bedside light intensity during the daytime (6:00-21:00) was measured at 1-min intervals using a light meter on 4869 bed-days at the Inabe General Hospital in Mie, Japan (latitude 35°N), for approximately 1 month in each season...
January 26, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29343462/a-tailored-web-based-advice-tool-for-skiers-and-snowboarders-protocol-for-a-randomized-controlled-trial
#6
Ellen Kemler, Vincent Gouttebarge
BACKGROUND: Being active in sports has many positive health effects. The direct effects of engaging in regular physical activity are particularly apparent in the prevention of several chronic diseases, including cardiovascular disease, diabetes, cancer, hypertension, obesity, depression, and osteoporosis. Besides the beneficial health effects of being active, sports participation is unfortunately also associated with a risk of injuries. In the case of many sports injuries (eg, winter sports) preventive measures are not compulsory, which means that a behavioral change in sports participants is necessary to increase the use of effective measures, and subsequently prevent or reduce injuries in sports...
January 17, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29336011/decreased-retinal-sensitivity-in-depressive-disorder-a-controlled-study
#7
G Berman, D Muttuvelu, D Berman, J I Larsen, R W Licht, J Ledolter, R H Kardon
OBJECTIVE: To compare pupil responses in depressed patients with a seasonal pattern, depressed patients without a seasonal pattern and healthy controls as a function of daylight hours on the testing day. METHOD: Patients suffering from a major depressive episode were included in wintertime. The pupil light reflex was measured at inclusion and in the following summer using a binocular pupillometer. A protocol of low (1 lux) and high (400 lux) intensity red and blue lights was used to assess rod, cone and melanopsin-containing intrinsic photosensitive retinal ganglion cell input to the pupil reflex...
January 15, 2018: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/29329063/seasonality-of-depressive-symptoms-in-women-but-not-in-men-a-cross-sectional-study-in-the-uk-biobank-cohort
#8
Laura M Lyall, Cathy A Wyse, Carlos A Celis-Morales, Donald M Lyall, Breda Cullen, Daniel Mackay, Joey Ward, Nicholas Graham, Rona J Strawbridge, Jason M R Gill, Amy Ferguson, Mark E S Bailey, Jill P Pell, Annie M Curtis, Daniel J Smith
BACKGROUND: We examined whether seasonal variations in depressive symptoms occurred independently of demographic and lifestyle factors, and were related to change in day length and/or outdoor temperature. METHODS: In a cross-sectional analysis of >150,000 participants of the UK Biobank cohort, we used the cosinor method to assess evidence of seasonality of a total depressive symptoms score and of low mood, anhedonia, tenseness and tiredness scores in women and men...
January 4, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29329062/amygdala-response-to-emotional-faces-in-seasonal-affective-disorder
#9
Camilla Borgsted, Brice Ozenne, Brenda Mc Mahon, Martin K Madsen, Liv V Hjordt, Ida Hageman, William F C Baaré, Gitte M Knudsen, Patrick M Fisher
BACKGROUND: Seasonal affective disorder (SAD) is characterized by seasonally recurring depression. Heightened amygdala activation to aversive stimuli is associated with major depressive disorder but its relation to SAD is unclear. We evaluated seasonal variation in amygdala activation in SAD and healthy controls (HC) using a longitudinal design targeting the asymptomatic/symptomatic phases of SAD. We hypothesized increased amygdala activation to aversive stimuli in the winter in SAD individuals (season-by-group interaction)...
January 3, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29317212/folliculogenic-factors-in-photoregressed-ovaries-differences-in-mrna-expression-in-early-compared-to-late-follicle-development
#10
Alexander K Salomon, Kathleen Leon, Melissa M Campbell, Kelly A Young
The early stages of ovarian folliculogenesis generally progress independent of gonadotropins, whereas later stages require signaling initiated by FSH. In Siberian hamsters, cycles of folliculogenesis are mediated by changes in photoperiod which depress the hypothalamic pituitary gonadal axis. Reduced gonadotropins lead to decreases in mature follicle development and ovulation; however, early stages of folliculogenesis have not been explored in regressed ovaries. We hypothesized that intraovarian factors that contribute predominantly to later stages of folliculogenesis would react to changes in photoperiod, whereas factors contributing to earlier stages would not change...
January 6, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29308715/exploring-the-relationship-between-vitamin-d-and-mania-correlations-between-serum-vitamin-d-levels-and-disease-activity
#11
Neslihan Altunsoy, Rabia Nazik Yüksel, Merve Cingi Yirun, Ayşegül Kılıçarslan, Çiğdem Aydemir
BACKGROUND: Several studies suggest an association between hypovitaminosis D and mood disorders including major depressive disorder, seasonal affective disorder and premenstrual dysphoric disorder. On the other hand, there is not enough study about acute manic episode and hypovitaminosis D. This data insufficient zone led us to study on whether vitamin D deficiency is associated with acute manic episode and has an impact on disease activity Methods: Thirty-one patients with bipolar disorder in remission, 26 patients with acute manic episode and 40 healthy controls with no major psychopathology were recruited in this study...
January 7, 2018: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/29280414/the-relationship-between-dietary-quality-serum-brain-derived-neurotrophic-factor-bdnf-level-and-the-val66met-polymorphism-in-predicting-depression
#12
Amy Froud, Jenifer Murphy, Lachlan Cribb, Chee H Ng, Jerome Sarris
BACKGROUND: Brain-derived neurotrophic factor (BDNF), a neurotrophic factor implicated in the pathogenesis of depression, may be influenced by dietary quality. Both dietary quality and serum BDNF have been researched independently in regard to their effect on depression; however, there is limited research investigating the relationship between the two factors and how they interact in depression. Additionally, a single-nucleotide polymorphism (SNP) (Val66Met) in the BDNF gene, which has been implicated in BDNF levels and depression, may contribute to the complex relationship between depression, dietary quality, and BDNF level...
December 27, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29218451/the-trajectory-from-mood-to-obesity
#13
REVIEW
Judith Wurtman, Richard Wurtman
PURPOSE OF REVIEW: To describe and explain the relationships between mood disturbances and the development of obesity. RECENT FINDINGS: That depression, anxiety, PTSD, or severe stresses can promote obesity as a side-effect of the drugs used to treat them, or through "carbohydrate craving" to enhance brain serotonin synthesis and alleviate dysphoria by consuming foods that are rich in both carbohydrates and fats. That seasonal affective disorder and severe PMS can independently cause patients to overconsume foods rich in both carbohydrates and fats...
December 7, 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/29206627/promoting-physical-activity-in-copd-insights-from-a-randomized-trial-of-a-web-based-intervention-and-pedometer-use
#14
Emily S Wan, Ana Kantorowski, Diana Homsy, Merilee Teylan, Reema Kadri, Caroline R Richardson, David R Gagnon, Eric Garshick, Marilyn L Moy
RATIONALE: Low physical activity is highly prevalent among COPD patients and is associated with increased healthcare utilization and mortality and reduced HRQL. The addition of a website to pedometer use is effective at increasing physical activity; however, the timeline of change and impact of environmental factors on efficacy is unknown. METHODS: U.S. Veterans with COPD were randomized (1:1) to receive either (1) a pedometer and website which provided goal-setting, feedback, disease-specific education, and an online community forum or (2) pedometer alone for 3 months...
September 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/29198038/photosynthetic-gas-exchange-responses-of-swietenia-macrophylla-king-and-melia-azedarach-l-plantations-under-drought-conditions
#15
Hong-Chyi Jhou, Ya-Nan Wang, Chung-Shien Wu, Jui-Chu Yu, Chung-I Chen
BACKGROUND: The environmental stresses caused by climate change have become more severe in recent decades, affecting tree growth and physiology. Tropical forests have great potential for global carbon sequestration. However, they suffer from heavy rainfall and prolonged dry periods due to climate change. Swietenia macrophylla King and Melia azedarach L. are economically valuable trees that are widely planted in southern Taiwan. Plantations are exposed to either prolonged dry periods or heavy rainfall within the seasons of tropical monsoon areas...
December 2, 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29179142/the-relationship-of-person-specific-eveningness-chronotype-greater-seasonality-and-less-rhythmicity-to-suicidal-behavior-a-literature-review
#16
REVIEW
Meredith E Rumble, Daniel Dickson, W Vaughn McCall, Andrew D Krystal, Doug Case, Peter B Rosenquist, Ruth M Benca
BACKGROUND: Epidemiological data have demonstrated seasonal and circadian patterns of suicidal deaths. Several reviews and meta-analyses have confirmed the relationship between sleep disturbance and suicidality. However, these reviews/meta-analyses have not focused on seasonal and circadian dysfunction in relation to suicidality, despite the common presence of this dysfunction in patients with mood disorders. Thus, the current literature review analyzed studies investigating person-specific chronotype, seasonality, and rhythmicity in relation to suicidal thoughts and behaviors...
November 14, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29163018/brain-networks-implicated-in-seasonal-affective-disorder-a-neuroimaging-pet-study-of-the-serotonin-transporter
#17
Martin Nørgaard, Melanie Ganz, Claus Svarer, Patrick M Fisher, Nathan W Churchill, Vincent Beliveau, Cheryl Grady, Stephen C Strother, Gitte M Knudsen
Background: Seasonal Affective Disorder (SAD) is a subtype of Major Depressive Disorder characterized by seasonally occurring depression that often presents with atypical vegetative symptoms such as hypersomnia and carbohydrate craving. It has recently been shown that unlike healthy people, patients with SAD fail to globally downregulate their cerebral serotonin transporter (5-HTT) in winter, and that this effect seemed to be particularly pronounced in female S-carriers of the 5-HTTLPR genotype. The purpose of this study was to identify a 5-HTT brain network that accounts for the adaption to the environmental stressor of winter in females with the short 5-HTTLPR genotype, a specific subgroup previously reported to be at increased risk for developing SAD...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29155264/modulation-of-adrenal-steroidogenesis-by-testosterone-in-the-lizard-coleonyx-elegans
#18
Rocco V Carsia, Patrick J McIlroy, Henry B John-Alder
Our previous work with adrenocortical cells from several Sceloporus lizard species suggests that gonadal hormones influence the steroidogenic capacity and the sensitivity to ACTH. However, there are discrepancies in these cellular response parameters suggesting that the effects of gonadal hormones on adrenocortical function vary with species, sex, age, season, and environmental/experimental conditions. To gain further insight into these complex interactions, here we report studies on Coleonyx elegans, Eublepharidae (Yucatán Banded Gecko), which is only distantly related to Sceloporus lizards via a basal common ancestor and in captivity, reproduces throughout the year...
November 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29145077/stability-of-the-diagnosis-of-seasonal-affective-disorder-in-a-long-term-prospective-study
#19
Marie-Laure Cléry-Melin, Philip Gorwood, Serge Friedman, Christian Even
BACKGROUND: Seasonal affective disorder (SAD) is mainly characterized by a seasonal pattern of depressive recurrences over the years. However, few studies have been conducted on the long-term course of patients with SAD, whose findings raised questions about the diagnosis stability over time. This study aimed to better characterize the diagnosis evolution, and determine prognosis markers. METHODS: An initial cohort of 225 outpatients diagnosed as having a SAD, was assessed at baseline (T1) for clinical symptoms and response to bright light therapy...
November 7, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29140633/the-impact-of-work-demand-and-gender-on-occupational-and-psychosocial-stress-in-hispanic-farmworkers
#20
Megan TePoel, Diane Rohlman, Meagan Shaw
Hispanic farmworkers experience hazardous work conditions, language barriers, poverty, and limited healthcare access that increase their risk for health problems. We sought to characterize occupational and lifestyle stressors in farmworker couples and to examine the impact of seasonal work demand and gender on health outcomes. We administered surveys to 31 couples (N = 62) in May (low work demand) and September (high work demand) of 2012. Measures included acculturation, perceived stress, depressive symptoms, quality of life, decision latitude, support (supervisor, co-worker), and work-family conflict...
April 26, 2017: Journal of Agricultural Safety and Health
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