Search results for "physiology"
showing 10 items of 8671 documents
Maternal weaning practices and their impact on infant's acceptance of new food
2010
Objective. The introduction of solid foods is a major step in the development of food behaviour. Previous studies showed that higher sensory variety in weaning period can later influence infant's acceptance of new food. The aim of the present study is (i) to describe precisely the different maternal weaning practices, (ii) to relate them with the individual mothers' and infants' characteristics, (iii) to study if these practices could impact infant's acceptance of new foods. Methods. Mothers (n=121) were requested to record each food proposed to their infant detailed from a sensory point of view and to score the level of its acceptance at the 4 first presentations. The beginning of the wean…
Eating a variety of vegetables: the importance of feeding practices at weaning and onwards
2013
Présentation sous forme d'un diaporama (24 diapositives) classé confidentiel; International audience; Eating a varied diet is known to improve the food intake from a nutritional point of view. Weaning (i.e. introduction of complementary foods) is a transitional process between the consumption of a unique food, milk, and family foods. This is the time when the diet gets progressively diversified. Accumulating evidences point towards the role that eating a varied diet as early as the beginning of weaning plays in the development of further food acceptance and healthy eating habits. These studies will be reviewed, as well as other studies underlying more broadly the role played by parental fee…
Vasarzaļo rododendru spraudeņu pavairošanas potenciāls atkarībā no mātes augu un spraudeņu apstrādes
2015
Darba mērķis bija noskaidrot vasarzaļo rododendru spraudeņu pavairošanas potenciālu atkarībā no mātes augu priekšapstrādes (etiolācija, steidzināšana) un spraudeņu apstrādes ar auksīnu – indol-3-sviestskābi (ISS). Mātes augu etiolācija kopā ar ISS veicināja straujāku rizoģenēzi, bet neietekmēja apsakņoto spraudeņu skaitu. Etiolācija uzlaboja pārziemošanu grūtāk apsakņojamiem spraudeņiem. Mātes augu steidzināšana kopā ar ISS uzlaboja spraudeņu rizoģenēzi grūtāk apsakņojamiem genotipiem, veicināja jauno dzinumu attīstību, uzlabojot spraudeņu pārziemošanu. Nodrošinot apsakņotajiem spraudeņiem nepārtrauktu veģetācijas periodu, var būtiski palielināt pārziemojušo spraudeņu skaitu. Cietes koncent…
Preeklampsi i Fit for fødsel
2016
Masteroppgave folkehelsevitenskap - Universitetet i Agder 2016 Background:Preeclampsia is a serious complication of pregnancy, affectingtwo to eight percentages of all pregnanciesworldwide. Important aspects of the causal mechanisms of preeclampsia are still unknown. It is however reason to believe that preeclampsia consists of several subtypes and various causal mechanisms canbe involved. The role of obesity, excessive gestational weight gain and maternal diet in the risk of preeclampsia has recently received increased attention.Thesis question:Are there differences regarding gestational weight gain, select blood sample parametres and dietary habits between primiparous women who develop pr…
Sustaining Attention for a Prolonged Duration Affects Dynamic Organizations of Frequency-Specific Functional Connectivity
2020
Sustained attention encompasses a cascade of fundamental functions. The human ability to implement a sustained attention task is supported by brain networks that dynamically formed and dissolved through oscillatory synchronization. The decrement of vigilance induced by prolonged task engagement affects sustained attention. However, little is known about which stage or combinations are affected by vigilance decrement. Here, we applied an analysis framework composed of weighted phase lag index (wPLI) and tensor component analysis (TCA) to an EEG dataset collected during 80 min sustained attention task to examine the electrophysiological basis of such effect. We aimed to characterize the phase…
Short-term responses of Rana arvalis tadpoles to pH and predator stress: adaptive divergence in behavioural and physiological plasticity?
2022
Environmental stress is a major driver of ecological and evolutionary processes in nature. To cope with stress, organisms can adjust through phenotypic plasticity and/or adapt through genetic change. Here, we compared short-term behavioural (activity) and physiological (corticosterone levels, CORT) responses of Rana arvalis tadpoles from two divergent populations (acid origin, AOP, versus neutral origin, NOP) to acid and predator stress. Tadpoles were initially reared in benign conditions at pH 7 and then exposed to a combination of two pH (acid versus neutral) and two predator cue (predator cue versus no predator cue) treatments. We assessed behavioural activity within the first 15 min, an…
Neuropsychological and psychophysiological profile of intimate partner violence perpetrators men: the role of alcohol
2018
La violencia contra la mujer en las relaciones de pareja hombre-mujer, representa un grave problema de salud pública a nivel mundial. En los últimos años, una mayor evidencia científica sustenta la relación entre la violencia contra la mujer y el consumo de alcohol. Sin embargo, existe un vacío en la literatura sobre los efectos que ejerce el consumo de alcohol sobre las variables neuropsicológicas y psicofisiológicas en los hombres que han cometido violencia contra la mujer. El consumo de alcohol podría predisponer a los agresores a presentar alteraciones cognitivas que afecten a su regulación emocional y comportamental y, por tanto, predisponer a conductas violentas en situaciones estresa…
Apoptosis in human unfertilized oocytes after intracytoplasmic sperm injection
2005
Objective To investigate the presence of programmed cell death in unfertilized oocytes after intracytoplasmic sperm injection (ICSI), assuming that previous apoptotic events could be correlated with the fertilization failure. Design Comparison of the rate of DNA fragmentation in human oocytes at different stages of maturation soon after pick-up (control) and in unfertilized oocytes after ICSI treatment. Setting In vitro fertilization (IVF) laboratory with extensive ICSI experience. Patient(s) Sixty-three patients undergoing assisted fertilization by ICSI. Intervention(s) Terminal deoxynucleotidyl transferase-mediated digoxigenin-dUTP nick-end labeling (TUNEL) assay and anticaspase-3 cleaved…
SV40 transformed fibroblasts recognize the same 140 kD fibronectin chemotactic fragment as non-transformed cells
1985
SV40-virus-transformed human embryonal fibroblasts show an enhanced chemotactic response to the glycoprotein fibronectin. However, they recognize the same chemotactic active region as non-transformed fibroblasts. The result suggests that an enhancement of chemotaxis by fibroblasts which have been transformed with Simian Virus 40 is due not to the utilization of further chemotactic domains in the molecule, but to an increased sensitivity of the cells to the chemoattractant.
A short introduction to papillomavirus biology.
2003
In this report, the tropism of papillomaviruses, the structure of virions, the function of viral proteins and the use of pseudovirions for the analysis of the immune response against papillomaviruses and the search for the viral receptor are briefly described.