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Browsing Research Articles (Physiology) by UP Author "Viljoen, Margaretha"
Now showing items 1-20 of 34
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Viljoen, Margaretha; Bipath, Priyesh; Roos, J.L. (Johannes Louw) (AOSIS, 2018-09-11)Pellagra is characterised by dermatological, gastrointestinal and neuropsychiatric manifestations. Millions contracted the disease and hundreds of thousands died between the time it was first recorded until pellagra was ...
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Negrao, Bianca Lee; Bipath, Priyesh; Van der Westhuizen, Deborah; Viljoen, Margaretha (Karger, 2011-01)OBJECTIVE: The aim of this study was to assess autonomic nervous system functioning in children with attention-deficit/hyperactivity disorder (ADHD) and to examine the effects of methylphenidate and focussed attention. ...
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Grant, C.C. (Catharina Cornelia); Becker, Piet J.; Viljoen, Margaretha (Suid-Afrikaanse Akademie vir Wetenskap en Kuns, 2006-06)Tydens die normale funksionering van die hart fluktueer die intervalle tussen opeenvolgende hartslae (R-R-intervalle) rondom 'n gemiddelde waarde. Hierdie fluktuering staan bekend as harttempovariasie (HTV). Verskillende ...
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Govender, Catherine; Du Plessis, Anna M.E.; Bipath, Priyesh; Povey, D.; Viviers, G.; Viljoen, Margaretha (In House Publications, 2010-03)OBJECTIVE: It is posited that the effect of depression on BMD is dependent on the severity of depression. Conflicting evidence exists regarding this possible association. This study investigated the association between ...
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Viljoen, Margaretha; Panzer, Annie (In House Publications, 2007-08)The central noradrenergic system belongs to a group of brainstem neuromodulatory systems previously referred to as the ascending reticular activating system. In this article a heuristic model is presented of the central ...
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Thomas, Bianca; Bipath, Priyesh; Viljoen, Margaretha (Makerere University Medical School, 2019-09)BACKGROUND : Neopterin, a product of cell-mediated immunity, is a non-specific biomarker of inflammation. Plasma/serum is generally the body fluid of choice for neopterin assessment, but urine is often used as it does ...
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Bipath, Priyesh; Govender, Catherine; Viljoen, Margaretha (NISC, 2009)Decreased quality of life of end-stage renal disease is further compromised by renal function replacement treatments such as haemodialysis (HD) and peritoneal dialysis (PD). Poor quality of life negatively affects ...
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Claassen, Nico; Snyman, Jacques Rene; Koorts, Alida Maria; Nolte, Heinrich Wilhelm; Wagenaar, B.; Kruger, Mariana; Becker, Piet J.; Viljoen, Margaretha (Health and Medical Publishing Group, 2006-03)OBJECTIVE: This study investigated the effects of single dosages of the non-steroidal anti-inflammatory drug (NSAID) naproxen, and of the coxib, rofecoxib, on the exercise-induced stress response. Conclusion. The results ...
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Panzer, Annie; Viljoen, Margaretha (In House Publications, 2004-08)Dissociation can be defined as the failure to integrate experience. Dissociation is a common symptom of a spectrum of severe psychopathologies, from reactive attachment disorder of infants to dissociative identity disorders, ...
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Grant, C.C. (Catharina Cornelia); Steenkamp, B.; Gauche, L.; Becker, Piet J.; Ker, James A.; Roos, J.L. (Johannes Louw); Viljoen, Margaretha (Clinics Cardiv, 2007)Co-morbidity between physical disease, especially cardiovascular, and psychological disturbances is well documented. In psychiatric patients, the potential for dysrhythmogenic incidences is increased by the fact that many ...
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Negrao, Bianca Lee; Crafford, Dalene; Viljoen, Margaretha (Clinics Cardiv, 2009-09)OBJECTIVE : The aim of this study was to investigate the effects of sympathomimetic medication on the cardiovascular system of children with attention-deficit / hyperactivity disorder (ADHD). METHODS : Cardiovascular ...
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Viljoen, Margaretha; Panzer, Annie; Koorts, Alida Maria; Henn, P.; Van den Bogaerde, J.B. (Suid-Afrikaanse Akademie vir Wetenskap en Kuns, 2004)Die medisinale gebruik van natuurlike plantmateriaal en voedselaanvullings is vinnig besig om veld te wen. Probiotika word deur die Voedseldirektoraat van die Departement van Gesondheid as voedselaanvulling beskou en van ...
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Koorts, Alida Maria; Levay, Peter Ferenc; Hall, Alan Norman; Van der Merwe, Christiaan Frederick; Becker, Piet J.; Frantzen, Doron Johan Manuel; Viljoen, Margaretha (Sage, 2012)Osteoarthritis is a disease characterized by an increase in the production of reactive oxygen species (ROS) in afflicted joints. Excess iron, due to its role in the production of ROS and crystal deposition in the joints, ...
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Koorts, Alida Maria; Levay, Peter Ferenc; Hall, Alan N.; Van der Merwe, Christiaan F.; Becker, Piet J.; Viljoen, Margaretha (Elsevier, 2011-05)BACKGROUND: The expression of the two types of ferritin subunits, the H-subunit and L-subunit, has been shown to be differentially regulated by cytokines. The primary aim of the present study was to quantitatively measure ...
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Koorts, Alida Maria; Viljoen, Margaretha; Dannheimer, Sigi (Taylor & Francis, 2007-02)Ferritin is the intracellular protein responsible for the sequestration, storage and release of iron. Ferritin can accumulate up to 4500 iron atoms as a ferrihydrite mineral in a protein shell and releases these iron atoms ...
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Grant, C.C. (Catharina Cornelia); Viljoen, Margaretha; Van Rensburg, Dina C.J.; Wood, Paola Silvia (Wiley-Blackwell, 2012)BACKGROUND: The effect of exercise interventions on autonomic nervous system (ANS) control of the heart by heart rate variability (HRV) is often investigated in just one position. It was hypothesized that results of ...
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Panzer, Annie; Lambert, Stephen; Viljoen, Margaretha (Die Suid-Afrikaanse Akademie vir Wetenskap en Kuns, 2007-03)Die onwillekeurige skrikreaksie vorm deel van die eerste vinnige vreesreaksies wat 'n organisme ervaar in respons tot 'n skielike bedreiging. Dit is voordelig in die sin dat dit 'n organisme toelaat om onmiddellik weg te ...
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Crafford, M.J.; Viljoen, Margaretha (Africa Association for Health, Physical Education, Recreation, Sport and Dance, 2008-12)There are many questions about the relationship between pregnancy and exercise. This article presents an overview of published works on a) exercise and problems with conception, with the focus on amenorrhea and miscarriage, ...
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Bipath, Priyesh; Levay, Peter Ferenc; Viljoen, Margaretha (BioMed Central, 2015-08)BACKGROUND : Tryptophan is an essential amino acid for the synthesis of proteins and important metabolites such as serotonin, melatonin, tryptamine and niacin. After protein synthesis, more than 90 % of tryptophan ...
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Negrao, Bianca Lee; Viljoen, Margaretha (In House Publications, 2010-03)Key research related to consciousness is that which investigates the neural systems that are deactivated or attenuated during altered states of consciousness, as well as during unconsciousness. This paper addresses various ...
Now showing items 1-20 of 34