A5089971927- Circadian rhythm and melatonin
- Stress Responses and Cortisol
- Neurobiology and Insect Physiology Research
- Physiological and biochemical adaptations
- Heart Rate Variability and Autonomic Control
- Isotope Analysis in Ecology
- Geology and Paleoclimatology Research
- Fish Ecology and Management Studies
- Climate change and permafrost
- Optimism, Hope, and Well-being
- Microplastics and Plastic Pollution
- Cryospheric studies and observations
- Ultrasound Imaging and Elastography
- Geological formations and processes
- Psychological Well-being and Life Satisfaction
- Hormonal Regulation and Hypertension
- Photoreceptor and optogenetics research
- Wildlife Ecology and Conservation
- Marine Biology and Environmental Chemistry
- Cephalopods and Marine Biology
- Cocoa and Sweet Potato Agronomy
- Cancer Risks and Factors
- Polar Research and Ecology
- Optical Imaging and Spectroscopy Techniques
- Dietary Effects on Health
University of Salento
2025
Sapienza University of Rome
2008-2022
For more than five decades, research has been conducted at Ny-Ålesund, in Svalbard, Norway, to understand the structure and functioning of High-Arctic ecosystems profound impacts on them environmental change. Terrestrial, freshwater, glacial marine are accessible year-round from providing unique opportunities for interdisciplinary observational experimental studies along physical, chemical, hydrological climatic gradients. Here, we synthesize terrestrial freshwater Ny-Ålesund review current...
The purpose of this study was to examine the longitudinal relationship between Positivity (POS), defined as a stable disposition view at experience under positive outlook, and physical psychological functioning in sample cancer patients immediately after diagnosis one year later.A total 110 (40% males) with pulmonary, colorectal breast cancer, aged 30-75 (M age = 59.62; SD 10.33), have been prospectively enrolled 2012 2013, S. Andrea Hospital Rome. All were previously aware their diagnosis....
The role of melatonin for the biological rhythms in invertebrates has remained highly controversial. We investigated presence and daily variation Lepidurus arcticus. Melatonin concentration was measured a wild population L. arcticus collected at 79°North during Arctic summer. n = 24 animals divided them 4 time-points:00:00, 06:00, 12:00, 18:00 local time. At every time-point, determined with ELISA. Our first result showed that present In sample we found an amount melatonin. As expected,...
Abstract Xylella fastidiosa is a Gram‐negative, xylem‐limited, bacterium which responsible, in Italy, for the olive quick decline syndrome ( OQDS ). The disease caused by subspecies pauca and emerged few years ago Apulia province of Lecce, Salento peninsula, on Olea europaea plants . X. can infect different plant species well known California as causal agent Pierce's grape. Infections susceptible hosts with are to result xylem vessel occlusions, water movement impairment, accordingly induce...
Introduction The vestibular acute stress induces reversible alert-like reactions that involve the sympathetic adrenal-medullar system and hypothalamic-pituitary-adrenal axis responses. present study aimed to evaluate salivary α-amylase cortisol production in relation with cardiovascular reactivity induced by healthy subjects. Material methods Forty-eight young male volunteers were examined under basal conditions at various times after reaching maximal nystagmic reaction following air caloric...
Cave-dwelling organisms belong to widely different evolutionary lineages but they show parallel or convergent evolution in several morphological and physiological traits such as elongated appendages, lower metabolism, specialized sensory systems, loss of eye pigmentation. Circadian rhythms locomotor activity have already been documented hypogean insects ultradian rhythmicity cave-dwelling has reported only by recent authors. We selected Laemostenus latialis a good candidate investigate the...
A new device based on the Raspberry-Pi to monitor locomotion of Arctic marine invertebrates and analyze chronobiologic data has been made, tested deployed. The uses infrared sensors record locomotor activity animals, which is later analyzed. software package consists two separate scripts: first designed manage acquisition evolution experiment, second generate actograms perform various analyses detect periodicity in (e.g., Fourier power spectra, chi-squared periodograms, Lomb–Scargle...
In order to predict the effects of climate change on polar ecosystems, disentangling mechanisms nutrient transfer in food webs is crucial. We investigated sources nutrients tundra lakes, tracing their through web and relating observed patterns runoff, snow coverage, presence migratory geese lake catchments. C N content (elemental isotopic) several components including Lepidurus arcticus (Notostraca, at top webs) 18 shallow Arctic lakes was compared. Terrestrial productivity abundance were...
The general or spontaneous motor activity of animals is a useful parameter in chronobiology. Modified motion detectors can be used to monitor locomotor rhythms. We modified commercial microwave-based detection device and validated the by recording circadian ultradian rhythms.Movements were detected microwave radar based on Doppler effect. equipment was designed detect record simultaneously 12 separate cages. Radars positioned at bottom aluminium bulkheads. Animal cages above radars connected...
It has been hypothesized that the occurrence of central serous chorioretinopathy (CSC) might be associated with stress. Therefore, our purpose was to investigate diurnal trajectories salivary cortisol and α-amylase (α-Amy) – markers hypothalamic-pituitary-adrenal (HPA) axis sympathetic-adrenal-medullary (SAM) system activity, respectively psychological profiles in idiopathic acute CSC. This cross-sectional observational case-control study, which included self-reported psychometric...
Abstract Animals that use astronomical cues to orientate must make continuous adjustment account for temporal changes in azimuth caused by Earth’s rotation. For example, the Monarch butterfly possesses a time-compensated sun compass dependent upon circadian clock antennae. The amphipod Talitrus saltator both and moon compass. We reasoned mechanism enables solar orientation of T. is located antennae, as case butterflies. examined activity rhythms sandhoppers with antennae surgically removed,...
It was recently reported that the circadian clock machinery controls plasma levels of factor (F) VII, serine protease triggering blood coagulation. Here, by exploiting mouse model, this study showed variations photoperiod (i.e., winter or summer conditions simulated chronic jetlag conditions) have a strong impact on FVII activity levels. Under mimicking photoperiods, clear 24 h rhythmicity. Interestingly, mean daily were significantly reduced in mice exposed to photoperiods. Behavioral...
In this study we recorded locomotor activity of two inbred mice (B6 and C) in photoperiod conditions (LD 12:12 DD) to characterize behavioural parameters the endogenous rhythms with particular attention ultradian rhythms. Literature reveals discordant data for these parameters, both animals belonging same strain those laboratory or monitored conditions. Our results show that C has a shorter unstable circadian period, while B6 longer stable rhythm. our study, showed period than C, so can...
This observational prospective study analyzed the effect of an incremental cardiopulmonary exercise test (CPET) on secretion salivary biomarkers adrenergic nervous system and hypothalamus-pituitary-adrenal (HPA) axis activity by measuring α-amylase cortisol diurnal trajectories in setting long-term hormone replacement therapy (HRT).Fifteen healthy sedentary postmenopausal women who were current HRT users 15 had never used consecutively recruited. α-Amylase measured samples collected CPET day...
A new inexpensive data logger specific designed to monitor the behavior of small animals in extreme scenario will be presented. The is based on common, commercial affordable and reliable devices that assure inexpensiveness and, at same time, could base for further reasonings developments with aim improve device face stressing scenarios such as aerospace. Preliminary test realized laboratory field have demonstrated its reliability.