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Journal articles on the topic 'Seasonal rhythm'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Honma, K., S. Honma, M. Kohsaka, and N. Fukuda. "Seasonal variation in the human circadian rhythm: dissociation between sleep and temperature rhythm." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 262, no. 5 (1992): R885—R891. http://dx.doi.org/10.1152/ajpregu.1992.262.5.r885.

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The circadian rhythms of sleep-wakefulness, rectal temperature, and plasma melatonin were measured in 10 healthy male subjects for five consecutive seasons. To minimize direct effects of seasonally changing environmental factors, the subjects stayed in a living facility for 4 days in each season, where ambient temperature, humidity, and social contacts were controlled, while the light intensity of the living room was substantially influenced by natural daylight. Seasonal variations were found in the timing of sleep, the mean body temperature, the phases of circadian temperature and melatonin r

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Jin, Shichao, Yanjun Su, Yongguang Zhang, et al. "Exploring Seasonal and Circadian Rhythms in Structural Traits of Field Maize from LiDAR Time Series." Plant Phenomics 2021 (September 6, 2021): 1–15. http://dx.doi.org/10.34133/2021/9895241.

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Plant growth rhythm in structural traits is important for better understanding plant response to the ever-changing environment. Terrestrial laser scanning (TLS) is a well-suited tool to study structural rhythm under field conditions. Recent studies have used TLS to describe the structural rhythm of trees, but no consistent patterns have been drawn. Meanwhile, whether TLS can capture structural rhythm in crops is unclear. Here, we aim to explore the seasonal and circadian rhythms in maize structural traits at both the plant and leaf levels from time-series TLS. The seasonal rhythm was studied u

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O'Brien, GM. "Seasonal reproduction in flying foxes, reviewed in the context of other tropical mammals." Reproduction, Fertility and Development 5, no. 5 (1993): 499. http://dx.doi.org/10.1071/rd9930499.

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Megachiroptera inhabit the Old World tropics and most are seasonal breeders having defined times of testis growth, mating and parturition. In Pteropus scapulatus, the little red flying fox, the robust rhythm of testis cycles is resistant to modification by photoperiod. P. poliocephalus, the greyheaded flying fox, can be manipulated by photoperiod but responds slowly and incompletely. Most mammals live in the tropics, many in seasonally harsh climates, and many breed seasonally. However, few long-lived tropical mammals have been investigated for photoperiodic entrainment of annual reproductive

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Yoneyama, S., S. Hashimoto, and K. Honma. "Seasonal changes of human circadian rhythms in Antarctica." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 277, no. 4 (1999): R1091—R1097. http://dx.doi.org/10.1152/ajpregu.1999.277.4.r1091.

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The human circadian rhythms in sleep, activity, plasma melatonin, and rectal temperature were explored under two conflicting time cues in Antarctica: an extreme photoperiod and a strict work schedule. The nine healthy male subjects stayed at the Antarctic zone (latitude 66.5–90° south) for 15 mo including a 13-mo wintering at the Dome station (latitude 77° south). Neither the phases nor the amounts of sleep and daily activity underwent a seasonal change. On the other hand, the peak phase of melatonin rhythm was phase delayed by 4.1 h in winter compared with summer. When the analysis is limited

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Liphschitz, Nili, and Simcha Lev-Yadun. "Cambial Activity of Evergreen and Seasonal Dimorphics Around the Mediterranean." IAWA Journal 7, no. 2 (1986): 145–53. http://dx.doi.org/10.1163/22941932-90000978.

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Douglas, A. S., and M. A. J. Moffat. "Circannual Rhythm of Measles Subsequent to Immunisation." Scottish Medical Journal 42, no. 3 (1997): 68–72. http://dx.doi.org/10.1177/003693309704200302.

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This is an epidemiological study of biennial and annual rhythms of measles in England and Wales between 1959–1994 highlighting changes following immunisation. The study describes annual rhythms starting in autumn (Week 41) and the statistical method tests the fit of a sine curve to annual data. Before immunisation the previously established biennial rhythm was seen: the two years differed in magnitude of seasonal variation, position of the peak, “visibility of school holidays” and peak breadth. After immunisation (1968) these biennial features tended to disappear, one annual rhythm becoming th

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Kiranmai, M. Sai, and M. Raajitha. "A COMPREHENSIVE REVIEW ON CHRONOTHERAPEUTICS." International Journal of Pharmaceutical Sciences and Medicine 8, no. 3 (2023): 82–108. http://dx.doi.org/10.47760/ijpsm.2023.v08i03.007.

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Chronotherapy refers to the use of circadian, ultradian, infradian & seasonal, or other rhythmic cycles in the application of therapy. There are a number of conditions that show a circadian pattern and advantages could be taken by timing and adjusting the administration of drugs according to the circadian rhythm of the disease. Chronotherapy can be divided into three categories: time-controlled systems, in which the drug release is primarily controlled by the delivery system; stimuli-induced PDDS, in which release is controlled by the stimuli, such as the pH or intestinal enzymes; or exter

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Pfenning-Butterworth, Alaina C., Kristina Amato, and Clayton E. Cressler. "Circadian Rhythm in Feeding Behavior of Daphnia dentifera." Journal of Biological Rhythms 36, no. 6 (2021): 589–94. http://dx.doi.org/10.1177/07487304211054404.

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Circadian rhythms enable organisms to mediate their molecular and physiological processes with changes in their environment. Although feeding behavior directly affects within-organism processes, there are few examples of a circadian rhythm in this key behavior. Here, we show that Daphnia have a nocturnal circadian rhythm in feeding behavior that corresponds with their diel vertical migration (DVM), an important life history strategy for predator and UV avoidance. In addition, this feeding rhythm appears to be temperature compensated, which suggests that feeding behavior is robust to seasonal c

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Checkley, S. A., D. G. M. Murphy, M. Abbas, et al. "Melatonin Rhythms in Seasonal Affective Disorder." British Journal of Psychiatry 163, no. 3 (1993): 332–37. http://dx.doi.org/10.1192/bjp.163.3.332.

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We examined 24-hour melatonin rhythms from 20 patients with seasonal affective disorder (SAD) and 20 healthy volunteers. Patients and controls were individually matched for age, sex, and month of study. Plasma samples were taken at hourly intervals, and were assayed for melatonin by radio-immunoassay. The 24-hourly melatonin estimations for each individual were fitted to a cosine curve, and the significance of the curve fits was calculated. Two analyses were performed. In analysis 1 the following were calculated: (a) cosine fit, (b) significance of fits, (c) mean amplitude and acrophase (peak)

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Devika k, Anandalakshmy K N, and Ajitha k. "Harmonizing health through Biorhythms: Ayurvedic insight." International Journal of Biological and Pharmaceutical Sciences Archive 7, no. 1 (2024): 077–84. http://dx.doi.org/10.53771/ijbpsa.2024.7.1.0023.

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Biological rhythms that sustain life exhibit periodic fluctuations in response to environmental changes. In the absence of external inputs, rhythms are maintained by this internal mechanism. Three primary types of rhythms can be distinguished: Circadian, Ultradian, and Infradian. The Tridosha theory, which forms the basis of Ayurveda, has a deep and innate relationship with the concept of biological rhythms. These rhythms are closely associated with an Ayurvedic theory called "Loka Purusha Samya Siddhanta," which postulates that humans are miniature of the cosmos. Understanding the cyclical va

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Pringsheim, Tamara. "Cluster Headache: Evidence for a Disorder of Circadian Rhythm and Hypothalamic Function." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 29, no. 1 (2002): 33–40. http://dx.doi.org/10.1017/s0317167100001694.

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This article reviews the literature for evidence of a disorder of circadian rhythm and hypothalamic function in cluster headache. Cluster headache exhibits diurnal and seasonal rhythmicity. While cluster headache has traditionally been thought of as a vascular headache disorder, its periodicity suggests involvement of the suprachiasmatic nucleus of the hypothalamus, the biological clock. Normal circadian function and seasonal changes occurring in the suprachiasmatic nucleus and pineal gland are correlated to the clinical features and abnormalities of circadian rhythm seen in cluster headache.

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Stevenson, T. J., M. E. Visser, W. Arnold, et al. "Disrupted seasonal biology impacts health, food security and ecosystems." Proceedings of the Royal Society B: Biological Sciences 282, no. 1817 (2015): 20151453. http://dx.doi.org/10.1098/rspb.2015.1453.

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The rhythm of life on earth is shaped by seasonal changes in the environment. Plants and animals show profound annual cycles in physiology, health, morphology, behaviour and demography in response to environmental cues. Seasonal biology impacts ecosystems and agriculture, with consequences for humans and biodiversity. Human populations show robust annual rhythms in health and well-being, and the birth month can have lasting effects that persist throughout life. This review emphasizes the need for a better understanding of seasonal biology against the backdrop of its rapidly progressing disrupt

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Johnston, Jonathan D., and Debra J. Skene. "60 YEARS OF NEUROENDOCRINOLOGY: Regulation of mammalian neuroendocrine physiology and rhythms by melatonin." Journal of Endocrinology 226, no. 2 (2015): T187—T198. http://dx.doi.org/10.1530/joe-15-0119.

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The isolation of melatonin was first reported in 1958. Since the demonstration that pineal melatonin synthesis reflects both daily and seasonal time, melatonin has become a key element of chronobiology research. In mammals, pineal melatonin is essential for transducing day-length information into seasonal physiological responses. Due to its lipophilic nature, melatonin is able to cross the placenta and is believed to regulate multiple aspects of perinatal physiology. The endogenous daily melatonin rhythm is also likely to play a role in the maintenance of synchrony between circadian clocks thr

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Rickly, Jillian M. "“They all have a different vibe”: A rhythmanalysis of climbing mobilities and the Red River Gorge as place." Tourist Studies 17, no. 3 (2017): 223–44. http://dx.doi.org/10.1177/1468797617717637.

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This article integrates a mobilities perspective and Lefebvre’s notion of rhythmanalysis as a means to interrogate place as an entanglement of mobilities, moorings, and rhythms. By investigating one popular rock climbing destination, this article demonstrates that mobilities invite encounters with and enactments of place such that travel rhythms, everyday rhythms, and natural rhythms coalesce, interrupt, and even emerge anew. Focusing on lifestyle rock climbers (a particular type of lifestyle mobility dedicated to the pursuit of climbing) and climbing events provides evidence for the ways info

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Kerimbay, B. "DYNAMICS AND VARIABILITY OF HIGH-MOUNTAIN GEOSYSTEMS OF THE SHARYN RIVER BASIN." Hydrometeorology and ecology 104, no. 1 (2022): 103–14. http://dx.doi.org/10.54668/2789-6323-2022-104-1-103-114.

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The study is based on a geosystem-basin approach, a method for determining the seasonal rhythm of the annual cycle, processing data from remote sensing of the Earth (ERS) and global monitoring in the integrated modules web browser of the digital platform (EOS). Spatial-temporal and seasonal linear NDVI series of key areas of high-mountain geosystems of the Sharyn river basin were constructed, and seasonal rhythms of the annual cycle were determined based on analytical data. As a result, a classification of the seasonal structure of the annual cycle was compiled, were revealedand the variabilit

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Zhang, Rongyu. "Therapeutic Interventions Targeting Circadian Rhythms." Theoretical and Natural Science 89, no. 1 (2025): 7–13. https://doi.org/10.54254/2753-8818/2025.20310.

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Occurring biologically in a 24-hour cycle, circadian rhythms affect important activities like metabolism, hormone production, and sleep-wake cycles. Many medical illnesses, including sleep problems, depression, and metabolic syndromes, have been linked to disruptions in circadian rhythms. This study reviews the therapeutic approaches that aim to realign disrupted circadian rhythms. Among the methods under discussion are light therapy, melatonin supplements, chronotherapy, and pharmaceutical treatments aiming at circadian paths. The review includes studies that assess the efficacy and utilizati

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Sun, Yuanqiang, Ke Shui, Qinyu Li, et al. "Upstream open reading frames dynamically modulate CLOCK protein translation to regulate circadian rhythms and sleep." PLOS Biology 23, no. 5 (2025): e3003173. https://doi.org/10.1371/journal.pbio.3003173.

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The circadian rhythm is an evolutionarily conserved mechanism with translational regulation increasingly recognized as pivotal in its modulation. In this study, we found that upstream open reading frames (uORFs) are enriched in Drosophila circadian rhythm genes, with particularly conserved uORFs present in core circadian clock genes. We demonstrate evidence that the uORFs of the core clock gene, Clock (Clk), rhythmically and substantially attenuate CLK protein translation in Drosophila, with pronounced suppression occurring during daylight hours. Eliminating Clk uORFs leads to increased CLK pr

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Cao, Wenxi. "The influence of Circadian Rhythm on Mood Disorders." Theoretical and Natural Science 110, no. 1 (2025): 90–98. https://doi.org/10.54254/2753-8818/2025.au22988.

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Mood disorders are among the leading causes of disability; their etiology is recognized to involve chronobiological dysregulation. The circadian system, governed by a central pacemaker in the suprachiasmatic nucleus (SCN), orchestrates daily rhythms in sleep, hormone secretion, and neurotransmission. Circadian rhythm disruption plays a central role in the onset and maintenance of mood disorders, including major depressive disorder (MDD), bipolar disorder (BD), seasonal affective disorder (SAD), and anxiety. Disruption of these rhythms through environmental factors such as light exposure or gen

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Dixit, Anand S., and Namram S. Singh. "Circadian versus circannual rhythm in the photoperiodic programming of seasonal responses in Eurasian tree sparrow (Passer montanus)." Photochemical & Photobiological Sciences 19, no. 3 (2020): 371–81. http://dx.doi.org/10.1039/c9pp00404a.

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Experiments were done on the subtropical tree sparrow to examine whether day length, as a proximate factor, involves circadian rhythm in timing seasonal responses or these events are programmed by the mediation of endogenous circannual rhythm.

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Vidal, Alexandre, Claire Médigue, Benoît Malpaux, and Frédérique Clément. "Endogenous circannual rhythm in luteinizing hormone secretion: insight from signal analysis coupled with mathematical modelling." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 367, no. 1908 (2009): 4759–77. http://dx.doi.org/10.1098/rsta.2009.0136.

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In sheep, as in many vertebrates, the seasonal pattern of reproduction is timed by the annual photoperiodic cycle, characterized by seasonal changes in the day length. The photoperiodic information is translated into a circadian profile of melatonin secretion. After multiple neuronal relays (within the hypothalamus), melatonin affects gonadotrophin-releasing hormone (GnRH) secretion, which in turn controls ovarian cyclicity. The pattern of GnRH secretion is mirrored by that of luteinizing hormone (LH) secretion, whose plasmatic level can be easily measured. We addressed the question of whether

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Wescott, Delainey L., Meredith L. Wallace, Brant P. Hasler, et al. "Sleep and circadian rhythm profiles in seasonal depression." Journal of Psychiatric Research 156 (December 2022): 114–21. http://dx.doi.org/10.1016/j.jpsychires.2022.10.019.

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Wirz-Justice, Anna, Kurt Kräuchi, and Peter Graw. "AN UNDERLYING CIRCANNUAL RHYTHM IN SEASONAL AFFECTIVE DISORDER?" Chronobiology International 18, no. 2 (2001): 309–13. http://dx.doi.org/10.1081/cbi-100103193.

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Hazlerigg, David G., and Gerald A. Lincoln. "Hypothesis." Journal of Biological Rhythms 26, no. 6 (2011): 471–85. http://dx.doi.org/10.1177/0748730411420812.

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Circannual rhythms are innately timed long-term (tau ≈ 12 months) cycles of physiology and behavior, crucial for life in habitats ranging from the equator to the Poles. Here the authors propose that circannual rhythm generation depends on tissue-autonomous, reiterated cycles of cell division, functional differentiation, and cell death. They see the feedback control influencing localized stem cell niches as crucial to this cyclical histogenesis hypothesis. Analogous to multi-oscillator circadian organization, circannual rhythm generation occurs in multiple tissues with hypothalamic and pituitar

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E.Y., Aliev, Iskender E.O., and Iskender E.O. "The Study Of Seasonal Developing Rhythm Of Mediterranean Origin Trees." Journal of Life Sciences and Biomedicine 70, no. 1 (2015): 83–86. https://doi.org/10.5281/zenodo.8333515.

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The influence of climatic factors on the Mediterranean origin trees and shrubs planted and cultivated in Absheron peninsula and changes in their annual rhythm in different botanical-geographical zones were comparatively studied. It was established that these plants were able to complete their developmental rhythm in Absheron and their extensive usage was considered advisable.

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Afonin, Alexey A. "Seasonal Dynamics of Internode Length of Salix triandra L. (Salicaceae) Against the Background of Short-Term Atmospheric Drought." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 1 (209) (March 31, 2021): 104–12. http://dx.doi.org/10.18522/1026-2237-2021-1-104-112.

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Almond willow (Salix triandra L.) is a valuable basket species that is used to create plantings for various purposes. He occupies a special place in the system of the genus Salix. He can be used as a model object to identify patterns of morphogenesis of shoots. Object of research: model inbred population of almond willow in culture. Subject of research: seasonal dynamics of internode length on annual shoots of three-year-old seedlings willow of almond willow. The purpose of the research: to identify the seasonal dynamics of the length of internodes on annual shoots of almond willow against the

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Soldánová, Miroslava, Ana Born-Torrijos, Roar Kristoffersen, Rune Knudsen, Per-Arne Amundsen, and Tomáš Scholz. "Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study." Pathogens 11, no. 6 (2022): 647. http://dx.doi.org/10.3390/pathogens11060647.

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The emergence of cercariae from infected mollusks is considered one of the most important adaptive strategies for maintaining the trematode life cycle. Short transmission opportunities of cercariae are often compensated by periodic daily rhythms in the cercarial release. However, there are virtually no data on the cercarial emergence of bird schistosomes from freshwater ecosystems in northern latitudes. We investigated the daily cercarial emergence rhythms of the bird schistosome Trichobilharzia sp. “peregra” from the snail host Radix balthica in a subarctic lake under both natural and laborat

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Pierre, Kamau, Naomi Schlesinger, and Ioannis P. Androulakis. "The role of the hypothalamic-pituitary-adrenal axis in modulating seasonal changes in immunity." Physiological Genomics 48, no. 10 (2016): 719–38. http://dx.doi.org/10.1152/physiolgenomics.00006.2016.

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Seasonal changes in environmental conditions are accompanied by significant adjustment of multiple biological processes. In temperate regions, the day fraction, or photoperiod, is a robust environmental cue that synchronizes seasonal variations in neuroendocrine and metabolic function. In this work, we propose a semimechanistic mathematical model that considers the influence of seasonal photoperiod changes as well as cellular and molecular adaptations to investigate the seasonality of immune function. Our model predicts that the circadian rhythms of cortisol, our proinflammatory mediator, and

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Pereira, Lilian Elgalise Techio, Adenilson José Paiva, Sila Carneiro da Silva, Fábio Olegário Caminha, Vitor Del'Álamo Guarda, and Priscila de Mesquita Pereira. "Sward structure of marandu palisadegrass subjected to continuous stocking and nitrogen-induced rhythms of growth." Scientia Agricola 67, no. 5 (2010): 531–39. http://dx.doi.org/10.1590/s0103-90162010000500006.

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Acceleration of the growth rhythm of plants using nitrogen fertiliser alters the rates of physiological processes like growth and senescence and may cause significant changes in sward structure, interfering with plant and animal responses. The objective of this experiment was to evaluate sward structure of marandu palisadegrass (Brachiaria brizantha) maintained at 30 cm under continuous stocking and subjected to contrasting rhythms of growth from January 2007 to April 2008. These were generated using or not nitrogen fertiliser, and comprised four experimental treatments as follows: control (no

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Medini-Bouaziz, Lamia, Sonia Hamaied, Ahmed Ouni, and Mohamed El Gtari. "Daily and seasonal time partitioning in surface activity of Porcellio albinus (Isopoda, Oniscidea) in the arid region of Zarat (Gabes, Tunisia)." ZooKeys 1101 (May 18, 2022): 203–12. http://dx.doi.org/10.3897/zookeys.1101.73834.

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The terrestrial isopod Porcellio albinus is a burrowing species, dwelling in the desert of south Tunisia. Field studies were carried out in the coastal area of Zarat, Tunisia, to examine the surface activity rhythm of P. albinus in relation to daily and seasonal variations in environmental conditions. The activity of P. albinus was followed once a month, from November 2012 through October 2013. Hourly capture frequency was compared across the different seasons of the year. Porcellio albinus is a strictly nocturnal species showing a nycthemeral rhythm regulated by the rhythmic and natural varia

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Medini-Bouaziz, Lamia, Sonia Hamaied, Ahmed Ouni, and Gtari Mohamed El. "Daily and seasonal time partitioning in surface activity of Porcellio albinus (Isopoda, Oniscidea) in the arid region of Zarat (Gabes, Tunisia)." ZooKeys 1101 (May 18, 2022): 203–12. https://doi.org/10.3897/zookeys.1101.73834.

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The terrestrial isopod Porcellio albinus is a burrowing species, dwelling in the desert of south Tunisia. Field studies were carried out in the coastal area of Zarat, Tunisia, to examine the surface activity rhythm of P. albinus in relation to daily and seasonal variations in environmental conditions. The activity of P. albinus was followed once a month, from November 2012 through October 2013. Hourly capture frequency was compared across the different seasons of the year. Porcellio albinus is a strictly nocturnal species showing a nycthemeral rhythm regulated by the rhythmic and natural varia

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Tackenberg, Michael C., Jacob J. Hughey, and Douglas G. McMahon. "Distinct Components of Photoperiodic Light Are Differentially Encoded by the Mammalian Circadian Clock." Journal of Biological Rhythms 35, no. 4 (2020): 353–67. http://dx.doi.org/10.1177/0748730420929217.

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Seasonal light cycles influence multiple physiological functions and are mediated through photoperiodic encoding by the circadian system. Despite our knowledge of the strong connection between seasonal light input and downstream circadian changes, less is known about the specific components of seasonal light cycles that are encoded and induce persistent changes in the circadian system. Using combinations of 3 T cycles (23, 24, 26 h) and 2 photoperiods per T cycle (long and short, with duty cycles scaled to each T cycle), we investigate the after-effects of entrainment to these 6 light cycles.

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Partonen, T., B. Appelberg, S. Kajaste, M. Partinen, M. Härmä, and J. Laitinen. "Effects of light treatment on circadian rhythmicity in seasonal affective disorder." European Psychiatry 7, no. 3 (1992): 141–42. http://dx.doi.org/10.1017/s0924933800003084.

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SummaryTwelve outpatients with seasonal affective disorder were treated by 1-h morning bright light exposure for 5 days. The light treatment intervention produced a significant phase advance of self-rated sleepiness rhythm, a significant decrease of the mean level of subjective sleepiness, and a significant reduction of depression scores. No significant objective circadian rhythm phase shift nor amplitude changes would account for the antidepressant effect.

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Shavnin, Sergey Aleksandrovich, Andrey Andreevich Montile, Elena Aleksandrovna Tishkina, and Ol'ga Vladimirovna Epanchinceva. "Seasonal dynamics and growth rhythm of shoots of Salix ‘Bullata’ plants." Agrarian Bulletin of the 23, no. 12 (2024): 94–110. http://dx.doi.org/10.32417/1997-4868-2024-23-12-94-110.

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Abstract. The purpose is to identify infradian rhythms in the seasonal dynamics of apical growth of shoots of Salix ‘Bullata’ plants and to establish the features of morphogenesis associated with the existence of endogenous (genetic and hormonal) mechanisms for the occurrence of nonlinear changes, including fluctuations in the growth characteristics of shoots. Methods. A quantitative approach was used to study the dynamics of morphogenesis processes. There was carried out a comparative research of seasonal dynamics of velocities and accelerations of apical and radial growth of Salix ‘Bullata’

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Kant, Ravi, Mahendra K. Meena, and Monika Pathania. "Dopamine: a modulator of circadian rhythms/biological clock." International Journal of Advances in Medicine 8, no. 2 (2021): 316. http://dx.doi.org/10.18203/2349-3933.ijam20210285.

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Circadian rhythm describes the physical, psychological, and behavioural patterns of living organisms that respond to day and night light levels. The important bodily functions like hunger, sleep, gastrointestinal motility, mood, coordination, body temperature, gene transcription, sensory perceptions, sleep-wake cycles and hormone release etc are influenced by circadian rhythm. Abnormal circadian rhythm may result obesity, depression, diabetes, seasonal affective disorder, bipolar disorders and various sleep disorders. The neuromodulator dopamine, originate from small groups of neurons in the m

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Cicoira, A., J. Beutel, J. Faillettaz, and A. Vieli. "Water controls the seasonal rhythm of rock glacier flow." Earth and Planetary Science Letters 528 (December 2019): 115844. http://dx.doi.org/10.1016/j.epsl.2019.115844.

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Park, Miso, Horyong Yoo, Junghyo Cho, and Wangjung Hur. "Lifestyles According to the Seasons in the <Hwangjenaegyeong Somun Sagijosindaelon> Re-Examined from the Perspective of Modern Researches on Circadian Clock." Nubebe Mibyeong Research Institute 4, no. 1 (2023): 11–22. http://dx.doi.org/10.37928/kjsm.2023.4.1.11.

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Objectives In <Hwangjenaegyeong Somun Sagijosindaelon>, the climate change according to the four seasons is explained, and how to manage health by adjusting the lifestyle is recorded. Since the concepts of yin-yang and the four seasons are being re-examined in modern times with the discovery of biological clock genes, we attempted to scientifically reinterpret the classic text. Methods We reinterpreted the classic text and used keywords such as “circadian clock,” “circadian gene,” “seasonal variation,” “metabolism,” “environment,” and “climate” to search PubMed and Google Scholar for rel

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Ragozin, Oleg N., Irina A. Pogonysheva, Elena Yu Shalamova, Denis A. Pogonyshev, Elina R. Ragozina, and Victoria V. Postnikova. "Variability of Helioclimate Factors and Applicability to the Emergency Service Population of the Northern Region." Bulletin of Nizhnevartovsk State University, no. 4 (December 7, 2022): 89–97. http://dx.doi.org/10.36906/2311-4444/22-4/09.

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The purpose of this study was to study the influence of the variability of weather and heliophysical factors on the appeal to the Ambulance service for different groups of nosologies in the population of the Russian North. Information about calls to the emergency medical service of Khanty-Mansiysk was obtained from the database of calls for the period from 2001 to 2021 by disease classes (ICD-10). To assess the dynamics of weather factors, data from the All-Russian Research Institute of Hydrometeorological Information and materials from the weather station of Khanty-Mansiysk were used. The dyn

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Ragozin, Oleg N., Ivan V. Radysh, Livhuwani Muthelo, et al. "The contribution of weather factors to seasonal variations in oxygen partial density in different climatic zones." Ekologiya cheloveka (Human Ecology) 31, no. 9 (2024): 692–700. https://doi.org/10.17816/humeco643447.

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Background: Currently, there is growing concern about changes in the oxygen content in the surface air layer. There are weather classifications where the determining meteotropic effect affecting human health is the value of oxygen partial density, but among these types of weather, hyperoxia situations are not considered, although in a number of studies attention has been drawn to the negative impact on human health of high oxygen content in inhaled air. Taking into account the combination of periodic and aperiodic components of weather factors, it seems relevant to assess their intraannual var

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Yellon, S. M. "60-Hz magnetic field exposure effects on the melatonin rhythm and photoperiod control of reproduction." American Journal of Physiology-Endocrinology and Metabolism 270, no. 5 (1996): E816—E821. http://dx.doi.org/10.1152/ajpendo.1996.270.5.e816.

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Adult Djungarian hamsters in long (16 h of light) or short (10 h of light) days for 6 wk were acutely exposed to a 1-G 60-Hz magnetic field (MF) for 15 min 2 h before dark. The nighttime rise in melatonin was delayed and duration reduced in MF-exposed hamsters in both photoperiods compared with sham controls. In a second replicate experiment, MF effects on melatonin rhythm duration were repeated in hamsters in short but not long days, and amplitudes at some clock times differed between the same treatment groups in the two studies. To test the hypothesis that daily MF abbreviates melatonin rhyt

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Matsumoto, Shoko, Liang Ren, Masayuki Iigo, Atsushi Murai, and Takashi Yoshimura. "Mimicking seasonal changes in light-dark cycle and ambient temperature modulates gut microbiome in mice under the same dietary regimen." PLOS ONE 18, no. 2 (2023): e0278013. http://dx.doi.org/10.1371/journal.pone.0278013.

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To better adapt to seasonal environmental changes, physiological processes and behaviors are regulated seasonally. The gut microbiome interacts with the physiology, behavior, and even the diseases of host animals, including humans and livestock. Seasonal changes in gut microbiome composition have been reported in several species under natural environments. Dietary content significantly affects the composition of the microbiome, and, in the natural environment, the diet varies between different seasons. Therefore, understanding the seasonal regulatory mechanisms of the gut microbiome is importa

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Kubentayev, Seril, Yuri Kotukhov, Klara Serzhankyzy Izbastina, Aisulu Karimkazhyevna Sarkytbayeva, Moldir Zhakypzhanovna Zhumagul, and Saule Mukhtubayeva. "Ecological-phytocenotic confinement and seasonal rhythm of development of Paeonia anomala L. in East Kazakhstan." Bulletin of the Karaganda University. “Biology, medicine, geography Series” 103, no. 3 (2021): 80–86. http://dx.doi.org/10.31489/2021bmg3/80-86.

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The article describes the ecological and biological features, phytocenotic structure and seasonal rhythm of development of Paeonia anomala L. populations on the territory of Kazakhstan Altai in the East Kazakhstan region. According to the research results, the regularities of the species confinement to the ecological and geomorphological conditions of the habitat were revealed, the limiting factors determining the rarity of the species were identified and recommendations were given for the preservation of the natural populations of the species. It was found that P. anomala in the studied regio

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Kullaev, Shomurod, Vera Cheryomushkina, and Mariyo Boboev. "Seasonal rhythm of development of Allium trautvetterianum in the Kulyab Botanical Garden." BIO Web of Conferences 11 (2018): 00026. http://dx.doi.org/10.1051/bioconf/20181100026.

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The article deals with the seasonal rhythm of development of the bulbaceous acrosympodially accreting polycarpic Allium trautvetterianum Regel (the subgenus Melanocrommyum) when growing in the Kulyab Botanical Garden of the Khatlon Scientific Center, Academy of Sciences of Tajikistan in 2010-2015. Duration of vegetation and phenological phases is described. The species is characterized on the phenorhytmotype as a shortgrowing ephemeroid. Influence of weather conditions on duration of phenological pahses is shown. It is established that the rhythm of development completely corresponds to the ea

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Nakamura, Shunji, and Tokitaka Oyama. "Adaptive Diversification in the Cellular Circadian Behavior of Arabidopsis Leaf- and Root-Derived Cells." Plant and Cell Physiology 63, no. 3 (2022): 421–32. http://dx.doi.org/10.1093/pcp/pcac008.

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Abstract The plant circadian system is based on self-sustained cellular oscillations and is utilized to adapt to daily and seasonal environmental changes. The cellular circadian clocks in the above- and belowground plant organs are subjected to diverse local environments. Individual cellular clocks are affected by other cells/tissues in plants, and the intrinsic circadian properties of individual cells remain to be elucidated. In this study, we monitored bioluminescence circadian rhythms of individual protoplast-derived cells from leaves and roots of a CCA1::LUC Arabidopsis transgenic plant. W

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Rodríguez-Sosa, Leonardo, Ma Teresa de la Vega, Paula Vergara, and Hugo Aréchiga. "Seasonal Rhythm of Red Pigment Concentrating Hormone in the Crayfish." Chronobiology International 14, no. 6 (1997): 639–45. http://dx.doi.org/10.3109/07420529709001453.

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DeMet, Edward M., Aleksandra Chicz-DeMet, and James Fleischmann. "Seasonal rhythm of platelet 3H-imipramine binding in normal controls." Biological Psychiatry 26, no. 5 (1989): 489–95. http://dx.doi.org/10.1016/0006-3223(89)90069-3.

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Morita, Takeshi, and Krzysztof Błażejczyk. "Seasonal Variations in Melatonin Secretory Rhythms in High-, Middle-, and Low-Latitude Regions." Przegląd Geograficzny 95, no. 3 (2023): 225–35. http://dx.doi.org/10.7163/przg.2023.3.1.

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This study aims to measure the daily melatonin secretory rhythms of people living in high-, mid-, and low-latitude regions characterised by different day lengths and global solar-radiation conditions. In Poland, a high-latitude region, the amount of melatonin secretion is greater, with secretion occurring earlier (exemplifying phase advance). On the other hand, in Vietnam, a low-latitude region, the level is lower and occurs later (phase delay). Japan, a mid-latitude region, shows behaviour intermediate between these two. Melatonin secretory rhythm in Vietnam is closely related to Day length a

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T.A., Scherbakova. "Seasonal rhythm development of perennial ornamental grasses during introduction in Forest-Steppe and Polissya of Ukraine." Plant Introduction 75 (August 1, 2017): 41–48. https://doi.org/10.5281/zenodo.2323821.

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<strong>Objective </strong> – to define of phenological features of growth and development of ornamental grasses during introduction in Forest-Steppe and Polissya of Ukraine. <strong>Material and methods. </strong>The study was carried out on plants introduced in M.M. Gryshko National Botanical Garden of the NAS of Ukraine of species and varieties of perennial ornamental grasses family <em>Poaceae</em>. Features of growth and development ornamental grasses in Forest-Steppe and Polissya of Ukraine have been described. Noted the beginning of spring growth phase, out of the tube, infloresce

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Reynaud, Eve, Fabrice Berna, Emmanuel Haffen, et al. "Validity and Usage of the Seasonal Pattern Assessment Questionnaire (SPAQ) in a French Population of Patients with Depression, Bipolar Disorders and Controls." Journal of Clinical Medicine 10, no. 9 (2021): 1897. http://dx.doi.org/10.3390/jcm10091897.

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The Seasonal Pattern Assessment Questionnaire (SPAQ), by Rosenthal et al. (1984), is by far the most used questionnaire to evaluate seasonal effects on mood and behavior. It includes a general seasonality score (GSS), composed of 6 items, from which cutoffs have been established to screen for seasonal affective disorder (SAD). However, it has never been validated in French and associations with circadian rhythm and symptoms of depression and bipolarity remain unclear. In this study, including 165 subjects (95 controls and 70 patients with depression or bipolar disorder), we confirmed the valid

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Colombo, R. A., M. Preve, E. Bolla, and R. Traber. "Seasonal variation and alcohol consumption: A retrospective observational study." European Psychiatry 41, S1 (2017): s874. http://dx.doi.org/10.1016/j.eurpsy.2017.01.1760.

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IntroductionSeasonal and geographic variations in light exposure influence human mood and behavior, including alcohol consumption. In literature alcohol consumption have a clear seasonal rhythm, with specific differences during the year . Seasonal changes in mood and behavior (seasonality) may be closely related to alcoholism. The aim of our study is to evaluate the relationship between alcohol consumption and seasonal variation.MethodOne hundred and nine inpatient are assessed with: the SCID-P for axis I diagnosis. Inclusion criteria are: (1) acute alcohol intoxication at the admission. All t

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I.A., Gutsalo, Pyda S.V., Stelmashchuk V.G., and Melnychuk O.A. "The peculiarities of growth and development of Lupinus arboreus Sims. plants while introducing in the conditions of Kremenets Botanical Garden." Plant Introduction 53 (March 1, 2012): 67–71. https://doi.org/10.5281/zenodo.2543900.

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The results of seasonal rhythm of development, growing processes and seed productivity of <em>Lupinus arboreus</em> Sims. plants in soil and climatic conditions of Kremenets hills are presented. Cold resistance usage are analyzed.

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