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Filter by:Major depressive disorder (MDD) is the world's leading cause of disability according to the World Health Organization. MDD is highly recurrent, even if clinical remission is reached after successful treatment. In fact, the enormous burden of disability, mortality and financial costs is due to the recurrent and chronic nature of MDD. The reliable prediction of the recurrence of major depressive episodes (MDEs) based on a prognostic model that is informed by biological, neurophysiological or neuroimaging data would be valuable and lifesaving for many. However, such models are still lacking. Several lines of evidence point to abnormal prefrontal control over limbic emotion processing areas in MDD owing to diminished prefrontal excitability that seems to persist during MDD remission (rMDD). Prefrontal excitability in rMDD may thus be a trait marker of MDD and may potentially be indicative of disease recurrence. Yet, research investigating the potential utility of prefrontal excitability for predicting the recurrence of MDEs is lacking. Cortical excitability can be investigated using transcranial magnetic stimulation (TMS); however, human studies have mostly probed cortical excitability of the motor cortex, a brain region not considered to be central in the neuropathology of MDD. Hence, knowledge of the effect of TMS on prefrontal excitability is limited. Moreover, whether immediate prefrontal modulation by TMS can predict the recurrence of MDEs in fully remitted MDD patients remains to be investigated. Thus, there is a need for research that aims to quantify the direct and immediate aftereffects of TMS on prefrontal function. Most importantly, with regard to precision medicine, there is a need for research that explores the utility of immediate prefrontal reactivity to TMS for predicting MDE recurrence. Here, the investigators propose a research program that will exploit the combination of functional near-infrared spectroscopy (fNIRS) with brain stimulation. Concurrent theta-burst stimulation (TBS)/fNIRS measurements will allow us to systematically investigate stimulation-induced modulation of blood oxygenation as a proxy for induced brain activity changes (TBS is a modern form of patterned TMS). The findings from this study will (1) elucidate the immediate effects of excitatory and inhibitory brain stimulation on prefrontal activity in rMDD and controls and (2) validate the potential utility of stimulation-induced brain modulation for the prediction of MDE recurrence.
Interleukin (IL)-38 is the newest member of the IL-1 family. It can bind to receptors through various pathways and regulate the formation and function of inflammatory cytokines. Periodontitis is a chronic inflammatory disease that can start with localized inflammatory reactions created by the supporting tissues surrounding the teeth against microorganisms and then result in loss of teeth. The aim of this study is to compare the IL-38, IL-1β and IL-10 levels of healthy and periodontitis individuals.
This trial is a randomized controlled trial aimed at assessing the effectiveness of a nine-month-long professional development program to improve early childhood educators' and carers' self-efficacy for science approaches, engagement with science, and attitudes toward science in early childhood education and care (ECEC).
β-glucan (BG) is a viscous dietary fiber present in barley and oats that, when added to carbohydrate containing foods, reduces the postprandial glycemic response (PPGR), which is considered to be beneficial to health. In 2011, the European Food Safety Authority (EFSA) concluded that 4g of either oat BG (OBG) or barley BG (BBG) per 30g available carbohydrate (avCHO) is required to obtain a reduction in PPGR, however this is an impractically large amount of BG to incorporate into palatable foods. A recent systematic review and meta-analysis found that doses of OBG well below 4g/30g avCHO can significantly reduce PPGR. It is therefore hypothesized that 25g avCHO portions of cereal containing 1.4-1.5g of either OBG or BBG will elicit a statistically significantly lower PPGR compared to a control cereal containing no BG.
The following three-part proposal will focus on the effects of agility training as well as the relationship between agility ability and motor and cognitive function, and risk of falls in elderly adults with or without mild cognitive impairment (MCI). Part I is a cross-sectional study design that will assess the level of agility in healthy young adults, healthy elderly adults, and elderly adults with MCI to determine the effect of aging and cognition decline on agility and the relations between agility, cognitive, and motor functions. Thirty participants will be screened for eligibility and recruited for each group (90 participants total). After collecting basic data, all participants will undergo cognitive and motor function tests, as well as an agility test. Cognitive function tests include tests of global cognition, working memory, mental set shifting, and selective attention. Motor function tests include tests of single and dual task walking, strength, power, balance, flexibility, and endurance. The agility test contains stop-and-go, change of direction, and spatial orientation components. Functional near-infrared spectroscopy (fNIRS) will be used to evaluate the brain activation during the agility test, cognitive tests, and single and dual task walking. Results from all tests will be used to determine the motor, cognitive, and other predictive factors associated with agility performance, and will be used in the design of the training program in Part II and III. Part II and III are single-blinded randomized controlled trials that will explore the short and long-term effects of a multicomponent training and an agility training protocol on agility, motor, and cognitive function in elderly adults with and without MCI. Seventy-five elderly adults with MCI (Part II) and seventy-five healthy elderly (Part III) will be recruited. After screening for eligibility and collection of demographic data, participants will undergo a pretest assessment. In addition to the motor, cognitive, and agility tests used in Part I, information on history of falls, falls efficacy, and quality of life will be assessed for each participant. Brain activation will be assessed during the agility test, cognitive tests, and single and dual task walking assessments using fNIRS. Participants will be randomly allocated into one of three groups: the control group, the multicomponent training group, or the agility training group (n=25 in each group). Intervention will be executed at a frequency of 45 minutes per session, 2 times a week for 8 weeks. The control group will receive home-based health education guidelines. The multicomponent training group will engage in 3 to 4 exercises each training session comprising the influencing factors of agility, and the agility training group will engage in integrated task-specific training. A post-test will be conducted after the 8-week intervention, and 1-month, 6-month, and 12-month follow-ups will be conducted for elderly adults with MCI. The healthy elderly adults will be assessed after the intervention and at the 1-month follow-up after training.
Agility comprised of cognitive and physical functions, which influences whole-body movement with change of speed and direction. Agility training is widely used in athletes, and recent studies have begun to apply it into the elderly. Agility training is multidimensional and highly functional, which makes it possible to provide more efficient training in limited time. In elderly, the decrement of cognitive function, muscle strength in the upper and lower limbs, the percentage of body fat, body flexibility and endurance caused by aging will make it difficult for the elderly to perform movements. Therefore, it is essential to explore whether agility training can achieve the improvement of the physical function and cognitive function in elderly, and to find the relationship between the two functions and brain activity. Method: This study will recruit 60 participants, and randomly allocate to control group and agility training. The training groups will have 8 weeks of training, 2 times a week, 45 minutes of training each time. Assessment will be performed before and after intervention in 1-week, and with 1-month follow-up. Assessment including agility ability, physical function, cognitive function, brain activity, and functional assessment scales.
The purpose of this study is to evaluate drug-drug interaction by comparing the pharmacokinetics (PK)/pharmacodynamics (PD), safety, and tolerability of single/multiple doses of DWP16001 , DWC202204 and DWC202205 alone or in combination in healthy male adults.
This study will examine the improvement in middle ear optical coherence tomography imaging from the topical application of glycerol to the tympanic membrane in normal, opaque and post-operative ears
Chronic low water intake may raise the risk of morbidity and mortality by influencing key water regulating hormones (e.g., AVP), which are known to modulate glucoregulation and renal function. For example, AVP stimulates the HPA axis to release the glucocorticoid stress hormone cortisol with potentially far-reaching effects on metabolism, immunity and inflammation. One study observed elevated blood cortisol in a group of low water drinkers, albeit cortisol was measured at one time of day only. However, in the field of psychobiology, researchers have traditionally related more dynamic assessments of cortisol with health outcomes; by evoking cortisol responses to acute standardised laboratory stressors, such as The Trier social stress test. More recently, researchers have appreciated the importance of circadian variability in cortisol levels, by examining influences on, and consequences of individual differences in the diurnal variation of cortisol. The major measurable parameters of the diurnal variation are; the cortisol awakening response (CAR), which is the rise in cortisol during the first 30-45 minutes following awakening, and the diurnal cortisol slope, which is the rate of decline in cortisol levels across the day, from morning to evening. These parameters are considered to reflect different aspects of HPA axis function; with the CAR best reflecting the adrenal capacity to respond to stress and awakening and diurnal slope more indicative of daily cortisol exposure. Although distinct, both blunted CAR and a flattened diurnal cortisol slope appear to be consistent markers of HPA axis dysfunction and related to a variety of poor health outcomes. Therefore, it has been recommended that contemporary research should simultaneously estimate an individual's awakening cortisol responsiveness, and diurnal slope, thereby capturing distinct and important components of HPA axis function. The shared pathways that regulate body water, diurnal variation in cortisol and our response to stress underpin the broad aim of this research programme: to investigate the influence of low and high fluid intake on diurnal cortisol variation and the cortisol response to acute stress. The aims of this study are to investigate: 1. The influence of a change in water intake behaviour on diurnal saliva cortisol variation as assessed by the CAR (primary outcome) 2. The influence of a change in water intake behaviour on biomarkers of hydration and thirst as assessed by urine osmolality, urine colour and thirst sensation. 3. The influence of habitual low and high total fluid intake on saliva cortisol response to an acute psychological stress (secondary outcome) 4. Investigate the influence of a change in water intake behaviour on plasma biomarkers of hydration as assessed by plasma osmolality and plasma copeptin (exploratory outcome)
Youth is a crucial time of life when physical and mental well-being is critical. Students are vulnerable due to academic and pandemic stresses. Meditation research has been showing effects on improved parameters of mental health (sleep quality, attention, memory, and concentration), emotional wellbeing (reduced stress and anxiety), and physiological parameters (better metabolism, circulation, immunity, etc.), which influence the life and academic performance of students. This study is designed to examine the feasibility of conducting a meditation intervention among students of a small liberal arts university in Pakistan. Future larger and longer randomized controlled clinical trials on high-risk youth may be planned at a later stage to see the impact on academic performance and career progression.