ABSTRACT Physiologic changes in mammals, including humans, are known to vary as a function of different lunar cycle phases. Importantly, the structure of the central nervous system (CNS) affects its functional status. A total of 15 healthy volunteers underwent magnetic resonance imaging (MRI) in each of the lunar cycles, with each subject undergoing a total of four imaging sessions. Size and volume

ABSTRACT Hospitalized patients are frequently deprived of contact with natural light and constantly exposed to artificial lighting, losing biological synchronism. However, few studies have been conducted to assess the consequences of inadequate exposure to light in hospital environments, whether related to insufficient light in the period daytime, or to light peaks at night. This study assesses the

ABSTRACT The human brain seems to be able to respond to low-level extremely low-frequency electromagnetic fields. Controlled laboratory studies of human sleep under exposure to such fields are scarce, especially on the effects of 1 Hz – 16 Hz fields overlapping with the frequencies of the electroencephalographic (EEG) signal (e.g., delta, theta, alpha, and sigma activities). In a double-blind placebo-controlled

ABSTRACT Circadian disruptions, including exposure to constant light, are known to produce behavioral and physiological issues. However, sex differences exist in how those problems manifest, as males tend to have increased susceptibility to the negative consequences of circadian disruption. As gonadal hormones play a role in circadian timekeeping, we decided to investigate whether ovariectomized C57BL6/J

ABSTRACT This research aimed to explore in free-living condition, in healthy normal weight subjects, the effect of social jetlag (SJL) and sleep deprivation on resting-state brain connectivity and synchronization, as assessed by resting-state fMRI, and their association with appetite. We found abnormal local functional synchronization in resting-state, as depicted by altered regional homogeneity (ReHo)

ABSTRACT The present study evaluates the effect of partial sleep restriction on postural control in judokas. Fourteen elite-level judokas performed three static postural control tests (the Unilateral Stance (US, on the Right and Left Foot); the modified Clinical Test for the Sensory Interaction on Balance (mCTSIB, on a firm and an unstable surface) stance with the eyes opened and then closed, and the

ABSTRACT Happiness, defined as thecognitive and emotional evaluations of individual’s life as a whole, not only gives individuals positive emotions, but also has positive returns in many areas related to the individual’s life. Therefore, the aim of the study was to examine the association of happiness with morningness – eveningness preference, sleep-related variables and academic performance in university

ABSTRACT Morningness/Eveningness (M/E) is an attribute related to adolescent mental and physical health. The Morningness/Eveningness Scale for Children (MESC) is a widely used instrument for measuring M/E in adolescents. In this study, an Spanish translation of the MESC was adapted to the Río de la Plata population. A psychometric study was carried out in a sample of 368 Uruguayan adolescents (63.6%

ABSTRACT This study aimed to verify the daily variation in the chromatic visual sensitivity of healthy subjects. The study included 35 male adults, aged between 20 and 40 years old (M = 24.97; SD = 4.9). The evaluation of color perception was made through the Cambridge Colour Test, using the Trivector and Ellipse tests. The Pittsburgh Sleep Quality Index, the Sleep Diary, and the Karolinska Sleepiness

ABSTRACT Intertidal dwellers exhibit a circatidal rhythm corresponding to the tidal cycles, but its molecular mechanism remains largely unknown. The mangrove cricket Apteronemobius asahinai simultaneously exhibits circatidal and circadian rhythms in its locomotor activity. In A. asahinai, it is considered that the circatidal rhythm is generated by the circatidal clock, and its molecular mechanism appears

ABSTRACT Lockdown is an important measure that has been globally adopted to reduce the spread of the contagious disease caused by SARS CoV-2. The imposed schedule and confinement led to extensive use of digital media and rise in sedentary activity drastically. The escalated duration of screen exposure causes disruption in sleep behavior. An online survey was conducted to comprehend the effect of lockdown

Standard cognitive measures are often applied at various times of the day to assess cognitive deficits in patients with neuropsychiatric and neurodegenerative disorders, irrespective of their chronotype. In this study, we aimed to determine whether the subjectively nonpreferred time of an assessment might be a crucial factor in persons with extreme chronotypes. We compared morning (08:00) and evening

The circadian rhythm, with the form of a transcription-translation negative feedback loop, is present in skeletal muscle tissue and is regulated by several core clock genes. In addition, circadian transcriptomic studies have revealed that there are hundreds of genes with rhythmic expression patterns in skeletal muscle, and these expression patterns are important for the maintenance of the physiological

It is well known that cancer and its treatment produce marked impact on the health-related quality of life (HRQoL) of cancer patients. Research concerning impact of chronotype on HRQoL in cancer patients is almost not studied yet, but the interests are growing in several diseases. Present study was carried out to explore the impact of socio-demographics, chronotype and consumption of tobacco, alcohol

The White-bellied Heron (Ardea insignis) is listed as a critically endangered bird species by BirdLife International due to the rapid population decline. Before this study, nothing was known about the night roosting behaviour of this imperiled species. Here, we report on the night roosting behaviour of the White-bellied Herons in Punatsangchhu and Mangdechhu river basins of Bhutan. There was a significant

ABSTRACT The Government of India imposed the strictest lockdown from 25 March 2020 till 31 May 2020 to control the spread of coronavirus outbreak. Consequently, about 1.38 billion people were under home confinement. Before the COVID-19 pandemic, we studied circadian rhythm (CR) in the usages of Facebook Messenger (FBM), as a group phenomenon, and published the findings in this journal. We thought it

The interactions of the principal circadian clock with the homeostatic sleep process create the time-sensitive window for easy falling asleep in the evening, which is affected by a thermoregulatory process. It has been hypothesized that the changes in skin and core body temperatures before the sleep onset might play a direct role in sleep regulation. To determine this time window, we recorded from

We studied time-of-day and seasonal variations in the foraging behavior of street cattle in Raipur city, India. We recorded the foraging behavior of street cattle at 48-time points each day for over three consecutive days at 10 different locations of Raipur city across three distinct seasons of the year. We log-transformed the time series data and employed Single Cosinor to compute the characteristics

Chronotype is an individual characteristic that can be important for health and quality of life. There are currently no instruments to measure chronotype in Ukrainians, so this study was conducted to provide adaptations of questionnaires with proven psychometric properties. The Composite Scale of Morningness (CSM) and the Munich ChronoType Questionnaire (MCTQ) were translated into Ukrainian using the

In this study, we measured the physical quantity of light (irradiance) in several wavelength bands at eye and wrist level for 8 h under laboratory conditions simulating daily life. Twenty-two healthy male participants (mean age ± SD, 29.95 ± 8.13 years) were able to move freely, and eye-level data were compared with irradiance data obtained at the wrist. We estimated circadian phase shift from the

The present study primarily aimed to investigate the interactive effect of chronotype and time of day on adolescent’s emotional states. Chronotype influences behaviour throughout the day, with variables such as mood exhibiting circadian rhythmicity. We also considered the influence of potential covariates, such as sleep variables and psychopathological symptoms. A total of 190 8th-grade students (53

The circadian clock is involved in many physiological processes including teeth development. The expression of circadian core clock genes was observed in various tissues, but their role in odontoblasts is unclear. The aim of this study was to investigate the circadian core clock gene expressions of dental papilla cells (DPCs) during the odontogenic differentiation. Primary DPCs were obtained from the

The current study aimed to examine the effects of caffeine consumption on physical and cognitive performance after an endurance race following one night of sleep deprivation. Ten recreational runners performed four test sessions in a randomized order at 09:00 h after placebo or 5 mg/kg of caffeine ingestion during a baseline night (BN) (bedtime: from 22:30 h to 07:00 h) or a night of total sleep deprivation

The present study aimed to report the circadian rhythm of intraocular pressure (IOP) in clinically normal donkeys. A prospective study was conducted on 30 adult donkeys. Measurement of the IOP was made at 2-hr interval starting at 6:00 hr till the next day at 4:00 using applanation tonometry. Measurements were recorded for both eyes and compared for male and female differences. The overall mean (±

We measured the induction and recovery time of anaesthetised olive flounder Paralichthys olivaceus with two concentrations of clove oil (25 and 50 μL/L), under the fluorescent lamp or green-wavelength light. In addition, we investigated their effects on the circadian rhythm after recovery from anaesthesia. We found that with the increase in anaesthesia concentration, induction time decreases and recovery

Natural phenomena act as external cues that stimulate the reproductive activity of many marine organisms. In this study, we report the gonadal maturation in relation to the lunar cycle of wild-caught Atlantic sea urchin, Arbacia punctulata (Echinodermata: Arbaciidae, an edible marine invertebrate), in the Gulf of Mexico. Weekly changes in gonadal development were observed histologically according to

The main objective of this investigation was to delineate spatiotemporal patterns in annual production of seven species of fishes inhabiting the famous Chilika lagoon. The data were collected from 19 landing centers located across four different geographical sectors of the lagoon over a period of two consecutive years. Using Cosinor rhythmometry, statistically significant circannual rhythms of production

Some substances used in aquaculture may be toxic to fish depending on their concentration. Here, we investigated the changes in circadian rhythm in olive flounders (Paralichthys olivaceus) exposed to total residual oxidant (TRO), a substance produced by the reaction of O3 with Br− ions, at two different concentrations (20 and 40 μg/L) for different periods (2, 6, 10, 14, 18, 22, 30, and 42 h) to identify

Thirty four lambs and twenty multiparous Morada Nova ewes with 3 ± 1.2 years of age were evaluated in a semi-extensive system for assessments of their suckling activities when they were 10-40 days old. The body mass (kg) and biometric measurements were also assessed at each 15 days from birth to 90 days of age. From 15 to 90 days of age, single lambs had superior (P < 0.05) body mass than those twins

The Facebook Messenger (FBM) is one of the most popular instant messaging social apps, launched by Facebook in 2010. As of October 2019, there were about 1.3 billion FBM users worldwide. In this study, we analyzed periodicities in the online activity patterns of users in FBM. We did not recruit any subjects in this study; rather four of us used our own FBM accounts to reveal the presence of any rhythms

This study deals with the impact of zinc on the locomotor activity rhythm of two terrestrial isopods Armadillo officinalis and Chetophiloscia elongata. Specimens are collected from the banks of Ghar El Melh lagoon. The locomotor rhythm of untreated and treated individuals with zinc is studied in the laboratory under constant darkness for 10 days. Results showed that untreated individuals of A. officinalis

Artificial Light at Night (ALAN) causes alteration in the redox status and membrane-bound transporters. Melatonin has pleiotropic effects on normal physiology and acts as a potential antioxidant. This study was undertaken to evaluate the effects of ALAN-induced alterations in the membrane transporters, oxidative stress biomarkers and to evaluate the protective effects of melatonin supplementation prior

The effects of cold-dry (harmattan) and hot-dry seasons on the circadian rhythms of colonic (CT) and body surface (BST) temperatures in 20 adult male Rouen ducks (Anas platyrhynchos domesticus) were investigated under natural light/day cycles in tropical conditions. Air temperature (AT), relative humidity, CT and BST were recorded bihourly for a period of 72 h during both hot-dry and harmattan seasons

Effects of different photoperiods (9L-15D, 12L-12D and 15L-9D at a constant temperature 25 ± 1°C) and simulated temperatures (15°C, 25°C and 35°C under a common photoperiod 12L-12D) were investigated on the circadian rhythms of plasma levels of thyroid hormones [thyroxine (T4) and triiodothyronine (T3)] and pineal arylalkylamine N-acetyltransferase (AANAT) activity in the fish, Clarias gariepinus during

The physiological and physical changes in pregnancy affect the sleep–wake cycle. Limited data exist to evaluate the effect of sleep quality and chronotype during pregnancy on adverse pregnancy outcomes. It is hypothesized that there could be a tendency for the evening chronotype and sleep disturbances to lead to the development of preeclampsia and preterm birth. A total of 313 pregnant women were included

Effects of different regimes of photoperiod (12L–12D, 16L–8D, 8L–16D, LL and DD) were studied on the circadian rhythm of expression of core clock genes (clock, bmal1, per1, per2, per3, cry1 and cry2) in the photosensitive pineal organ of air-breathing catfish, Clarias gariepinus during summer and winter seasons under both in vivo and in vitro conditions using qPCR. Our findings indicate that all major

The circadian clock is a rhythmic oscillator driving various physiological and behavioral processes that adapt to daily environmental changes. MicroRNAs (miRNAs) are a class of small non-coding RNAs that play an important role in post-transcriptional regulation. Although recent work has demonstrated that miRNAs are involved in development and disease, their function in the adult circadian locomotor

This paper examined the psychometric properties of the French version of the Children’s Chronotype Questionnaire (CCTQ) attending two elementary schools in Luxembourg (n = 172; ages 4–11 years, M = 8.0, SD = 2.1) of either Portuguese (n = 11), Luxembourgian (n = 147), or other (n = 15) ethnicity. Parents completed the CCTQ, from which we used two chronotype scales (i.e. midsleep point on free days;

Investigations have demonstrated that circadian rhythm can affect animal curiosity, also a significant correlation has been reported between curiosity and addiction. So the aim of this study is to evaluate the effect of circadian fluctuation in curiosity on addiction. For this purpose, we used the open field (OF) test and conditioned place preference (CPP) biased paradigm. In the OF we evaluated animals

The susceptibility of larval stages of Schistosoma nasale, S. spindale, S. indicum, amphistomes, echinostomes, etc., in Indoplanorbis exustus, the snail intermediate host, depends on their age, body weight and other limnological properties. So, a good number of healthy sexually mature I. exustus snails were collected randomly from different water sources of Assam and released in previously prepared

Given the increasing role of circadian rhythm disruption in health and disease, animal models are necessary to elucidate the mechanisms and effects involved. Social jetlag is a mild form of chronic circadian rhythm disruption that involves a misalignment between one’s internal time and their external schedule. Using phase advances and delays that are characteristic of a typical working week with sleep

Freshly collected individuals of Hemilepistus reaumurii from the marginal zone of a salt lake in Bchachma (Middle of Tunisia) were seasonally housed in a controlled environment cabinet. The aim of this study was to investigate the effect of sex on the locomotor activity rhythm of this species. Locomotor activity rhythm of males and females of this species was recorded during each season under light-dark

Our previous study indicated that Clock gene could affect the thrombotic potential. In this present study, we examined the differential expression of proteins in Clock knockdown mice’s plasma, including α1-antitrypsin as a potential target. The proteins were examined in AML12 cells with Clock gene being knocked down to confirm the differential expressions. RNAs of those cells were extracted every 3

‘Ramadan’ is observed by the Muslims around the world, out of their religious belief, as a period when they fast all day and break fasting only after sun set. The Ramadan fasting, which can be viewed as alternate fasting owing to the nature of food intake during this time, stretches for 28 days. The food intake prior to sun rise is known as ‘sahour’ and that after sunset is called ‘iftar’. In view

Cortisol hormone shows distinct circadian rhythmicity in humans and animals. In this study, preliminary cortisol assessments were conducted using wool samples from ewes (nine ewes) exploiting both RIA and ELISA assays. Afterwards, eighteen high production (milk = 38 ± 1.5 kg d−1) lactating Holstein cows (2nd parity) and 12 growing heifers (10–12 mo of age, BW = 200 ± 35 kg) were employed in this experiment

The circadian rhythm is constituted by genes/proteins, such as Cryptochrome (Cry). Medications including general anesthetics can alter these genes/proteins thus toxicity occurs. We claim that activation of Cry may contribute to the reduction of anesthetic-induced oxidative stress. In this study, the effect of combination therapy of Cry activator, KL001 with isoflurane was investigated. Twenty-four

The experiment was carried out to investigate the changes in physiological parameters and blood flow during different seasons (winter, thermo-neutral and summer) in Sahiwal (SW), Tharparkar (TP), Gir (GR) and Karan Fries (KF) dairy cows. Four healthy lactating cows from each breed were selected from a herd of Livestock Research Center, NDRI, Karnal. All animals were fed as per the ICAR (2013) feeding

Theileriosis, an important tick-borne hemoprotozoan disease that can reduce production and productivity, results in severe economic loss in goat industry. Due to lack of facilities and interest of the researchers the sub-clinical form of theileriosis caused by Theileria luwenshuni was under diagnosed in Assam, India. Therefore, a study was carried out to determine the prevalence of theileriosis in

Present experiment was conducted to examine whether the supplementation of different organic sources of Cr (Chromium) would improve the performance of heat-stressed calves. Twenty-four female Hariana calves were divided into four treatments (six calves per treatment): (1) calves fed on basal diet (0 mg Cr/kg DM); (2) calves fed on basal diet supplemented with 1.0 mg Cr/kg DM as Cr-picolinate (Cr-Pic);

In this study, effect high-energy diet with supplemented with copper and zinc on oxidative stress, leukocyte function and reproductive performance during the transition period in the crossbred cow under tropical settings. Advanced pregnant crossbred cows of two to four parity and lactation yield of >10 L/day were divided into three equal groups (n = 10 cow/group). Group I cows were fed basal diet to

Animal husbandry serves as a source of provision of high-quality animal protein to the entire world population. Farm animals are exposed to different types of stressors at various stages of their life cycle. The climate change phenomenon also imposes additional stress on the animals due to extreme temperature (heat and cold) and unavailability of feed, etc. Such stress stimuli induce the release of

Ten northeast Brazilian donkeys were used to evaluate the influence of meteorological variables on their physiological responses in tropical conditions. Physiological data included respiratory rate (RR), heart rate (HR), rectal temperature (RT), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP) and cortisol concentrations. The environment was characterized

The present study was undertaken to evaluate the effect of isonitrogenous diets varying in concentrate-to-forage ratio on enteric methane (CH4) emission, nutrient utilization and growth performance in crossbred goat kids. Fifteen Alpine and Beetal crossbred (AxB) kids (3–4 months age) were divided into three groups based on average body weight and treatments were assigned to the three groups randomly

Hatchability is the most important elements for producing more ducks. Hatchability is an indicator used to determine the economic value for any commercial hatchery. Optimal conditions during the incubation process may be defined as those leading to maximum hatchability of healthy ducklings. One of the main factors in the success of the duck hatching process is to adjust the appropriate temperature

The age at first calving (AFC) has a huge impact on profitability in the dairy industry. It can be used as an indicator of fertility and productivity and it is also considered as an essential factor to ascertain the overall production performance of the animal. There are large variations in AFC in herd to herd, breed to breed and also country to country. This may be due to various factors that affect

The present study surveyed that the prevalence of subclinical and clinical ketosis in cattle was assessed in and around Bikaner; a total of 200 cows after parturition were examined. The overall prevalence of clinical ketosis amongst post-parturient cows was 11.50%, while 23.50% for subclinical ketosis. Prevalence of clinical and subclinical ketosis in cows with relation to breed was the highest in

This study aimed to evaluate morphological, bromatological, in vitro gas production and yield of forage watermelon (Citrullus lanatus var. citroides) genotypes in semi-arid condition. Seven genotypes were evaluated were BGCIA 228, BGCIA 239, Jojoba, BGCIA 228 x BGCIA239, BGCIA 228 x BGCIA Jojoba, BGCIA 239 x Jojoba and BGCIA 991. The experimental design was a complete randomized block with three replicates

The present study reports the prevalence of ecto- and endo-parasites in small wild ruminants from various NE region of India. A total of 565 wild small ruminants in captivity were examined between April 2018 to March 2019 without causing harm to them. Faecal samples were examined microscopically for detection of different Gastrointestinal (GI) parasites. Animals were also inspected visually for any

ABSTRACT An epidemiological study was conducted for investigation of bovine coronavirus by antigen Enzyme-linked immunosorbent assay kit in dairy calves from Central India (Madhya Pradesh and Chhattisgarh states) and North India (Uttar Pradesh state). Different epidemiological parameters like age, parity, colour and consistency of faecal materials and seasonal changes in a year were recorded. A total