M.Cur. / Tuberculosis is regarded as a global health problem as accelerated by the impact of the HIV/AIDS epidemic. In South Africa it is regarded as a top national health priority. Taking treatment regularly prevents multi-drug resistance TB. The introduction of Directly Observed Treatment Short-course (DOTS) ensures that treatment supporters observe TB patients swallow tablets under direct supervision. In the area of research, treatment supporters are trained by South African National Tuberculosis Association trainers to supervise treatment. It happened on a regular basis that patients complain about various aspects of the observational progress, resulting in change of treatment supporters, some preferred to be supervised from the clinic. The researcher developed interest to find out about the shortcomings in the observation of TB patients by treatment supporters, so as to address those shortcomings. A qualitative, exploratory, descriptive and contextual research study was conducted to identify the experience of treatment supporters in observing tuberculosis patients on TB treatment and also, the experience of TB patients as observed by treatment supporters. Permission was obtained from both treatment supporters and TB patients. A pilot phenomenological interview was conducted from one TB patient and one treatment supporter supervising TB treatment, who met the selection criteria. The phenomenological interviews were conducted in Northern Sotho (Pedi), Shangaan, Tswana, Xhosa, Zulu, Southern Sotho and Northern Sotho (Tlokwa) from both treatment supporters and TB patients. The samples comprises of 14 TB patients and 14 treatment supporters supervising those TB patients. Steps were taken to ensure trustworthiness. Tesch’s method of data-analysis was followed to analyze the data. Results indicated that there are interfering factors relating to the working relationship between the TB patients and the treatment supporter. From the findings, facilitative factors are used as proposals to promote the observation of TB patients by treatment supporters. Strategies are described from the rationale, which explain how the proposal can be reached. The strategies were based on the study findings and the literature reviewed.

Dissertation (Ph.D.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references (p.99-112).

M.Cur. / The problem of relapsed psychiatric patients is global, it is high in rural areas where services are not readily available. Lack of knowledge of psychiatric conditions and the management by family of patients play a part in psychiatric patients relapsing. Families reject their family members (patients) when they are in hospital, for what they did when their illness started. Some patients assaulted people, stripped naked in the street. The family then disassociate themselves from the patient because of that behaviour. Studies have indicated that the following reduce the rate of relapse of psychiatric patients: • psycho-education for families regarding the causes of mental illness and its management; and • active involvement of families of patients in the treatment plan of these patients. The researcher’s interest was triggered by the high rate of psychiatric patient relapses in the institution where she works. The researcher decided to investigate the experiences of patients who have relapsed. An investigation was done whereby an explorative, descriptive, contextual and qualitative design was used to find out what the experiences of patients are who have relapsed. Phenomenological interviews were done with seven participants who were purposively selected. Permission was first obtained from the gatekeepers and participants. Thereafter, a pilot study was done with one patient who met the selection criteria for the study. This was done to help the researcher to discover the strong and weak points of the research and to make corrections where necessary. Following Guba’s model (Krefting, 1991:214-222) strategies ensured trustworthiness. Data analysis was done following Tesch’s method of data analysis (Creswell, 1994:154-156). The results showed that patients’ basic needs are neglected in some areas. Emotional dimensions of participants were not catered for by health workers, which resulted in participants getting frustrated and angry. After the data analysis guidelines for psychiatric nurses were described to assist psychiatric patients to mobilise their resources. Recommendations were made regarding the application of the results of the study in psychiatric education, nursing practice and research and for family members. It was concluded that the questions of the study were answered and the objectives were achieved.

Despite improvements in cancer management over the past 25 years, unrelieved symptoms continue to be reported. Little is known about how patients' problems and concerns are communicated to professionals during oncology treatment. This research investigates communication between cancer patients and clinicians in hospital outpatient clinics. Data were collected by non-participant observation and audio recording of consultations. Analyses were by qualitative content analysis and conversation analysis. An Objectives, Strategies and Tactics model was applied to organise the findings. 74 consultations between cancer patients and 15 doctors were observed and audio recorded. Pain talk is defined and identified as a substantial topic, occurring in 39/74 consultations. Doctor-initiated questions are the predominant discourse feature occupying over two-fifths of pain talk sequences. Their questions are prominent not only in initiating discussions but also in directing further talk. In other words, clinicians' questions control both the content and order of talk within pain talk sequences ( eg, over three-quarters of doctor-initiated questions are in a closed form which focus narrowly on limited physical aspects of patients' pain). It is argued that this limited information exchange alongside other communication tactics, is used to identify the 'right kind' of pain which may benefit from cancer therapy and to truncate talk of problems perceived to be outside of this specialist remit.

M.A. (Psychology) / The aim of this dissertation is to investigate the services and methods provided by the various medical and psychological professions within an inpatient psychiatric hospital setting. While working at a psychiatric hospital, the researcher was struck by the high readmittance rate of patients. This tended to create a general feeling of disappointment, frustration and impotence amongst the professions. The importance of such an investigation was therefore required, in order to help facilitate and improve current methods. A thorough investigation of the literature with regard to the current treatment methods at psychiatric hospitals, both on an international and national level, were undertaken. An in-depth case study was described and analysed to indicate the recurrent procedures, methods and treatment modalities that were being instituted within the hospital setting. The aim of this thesis was also to propose an alternative method to the current procedures, using an in-depth case study to indicate the use thereof.

Thesis (MCur)--Stellenbosch University, 2012. / ENGLISH ABSTRACT: Many HIV positive patients are on antiretroviral therapy (ART) to assist in decreasing the replication of the HIV virus within the body. Adherence to this medication is important, as non- adherence can have serious repercussions. Therefore, the patients’ knowledge of ART and their disease is crucial in ensuring good adherence. A range of barriers to patient education were suspected by the researcher in this community of Delft. The high influx of patients into the clinic everyday minimized consultation time and thereby diminished the opportunity for effective patient education. Consequently, adherence to medication which is closely related to the knowledge and understanding of patients about the disease may be affected. The following research question was therefore explored: What is the knowledge of infected HIV/AIDS patients who are receiving antiretroviral treatment about HIV/AIDS and ART? The objectives set were to evaluate the patient’s knowledge of HIV/AIDS, evaluate the knowledge of ART and to determine whether there are statistical differences between the dependant and independent variables within the study. A quantitative descriptive correlational research design was applied and a convenience sample of n= 200 (8.5%) patients was selected from a population of N= 2349 at the Delft Community Health Centre. A multiple choice questionnaire comprising of mainly closed ended questions with multiple responses was used in individual interviews conducted by either the researcher or fieldworker. Reliability and validity was ensured through the consultation of experts in the fields of research methodology, statistics, HIV/AIDS and the Health Research Ethics Committee of Stellenbosch University. Permission to conduct this study was granted by the Health Research Ethics Committee of Stellenbosch University, the Provincial Regional Head for Primary Health Care Services, as well as the head of the Delft Community Health Centre. Data revealed that the participants were mainly female (n=145/72.5%), and the mean age was 37.5 years. Participants were mostly Xhosa speaking and literate, and the majority (n=112/56%), of the participants had a highest education level between grade 9 and grade 12. Many (n=73/36.5%) of the participants had been living with HIV for more than 5 years, but had been on ART for between 1 to 3 years. Knowledge was assessed by asking questions about various aspects of HIV and ART throughout the study. Scores for the 14 critical questions revealed that (n=0/0%) of the participants had good knowledge, (n=40/20%) of the participants had average knowledge and (n=160/80%) of the participants had poor knowledge. The average score for all participants for all 20 knowledge testing questions was (12.6/63%). The findings showed that the overall knowledge (n=160/80%) is poor. Basic terms and principles of HIV/AIDS and ART were not understood and serious misconceptions regarding the disease were revealed. / AFRIKAANSE OPSOMMING: Baie MIV positiewe pasiënte is op antiretrovirale terapie (ART) om te help met die vermindering van die replisering van die HIV virus in die liggaam. Gebruik van hierdie medikasie is belangrik omdat versuiming van inname ernstige gevolge kan hê. Dus, is die pasiënte se kennis van ART en hul siekte van deurslaggewende belang om volgehoue inname te verseker. ’n Reeks van hindernisse om pasiënte te onderrig, is deur die navorser in die Delftgemeenskap vermoed. Die hoë toestroming van pasiënte na die kliniek elke dag het die konsultasietyd tot die minimum beperk en daardeur die geleentheid vir effektiewe pasiëntonderrig laat verminder. Gevolglik, kan die nakoming om die medikasie te neem wat ’n noue verband toon met die kennis en begrip wat pasiënte het oor die siekte, geaffekteer word. Die volgende navorsingsvraag is gevolglik ondersoek: Wat is die kennis van geïnfekteerde HIV/VIGS pasiënte wat antiretrovirale behandeling ontvang oor HIV/VIGS en ART? Die doelwitte wat gestel is, is om die pasiënt se kennis van HIV/VIGS te evalueer, die kennis van ART te evalueer en te bepaal of daar ’n statistiese verwantskap tussen onafhanklike en afhanklike veranderlikes binne die studie is. ’n Kwantitatiewe beskrywende korrelerende navorsingsontwerp is toegepas en ’n gerieflikheidsmonster van n= 200 (8.5%) pasiënte is geselekteer uit ’n bevolking van N = 2349 by die Delftgemeenskap Gesondheidssentrum. ’n Veelkeusige vraelys wat hoofsaaklik uit geslote vrae met veelkeusige response bestaan het, is gebruik in individuele onderhoude wat deur of die navorser of veldwerker gevoer is. Betroubaarheid en geldigheid is verseker deur oorlegpleging met spesialiste op die gebied van navorsingsmetodologie, statistiek, HIV/VIGS en die Gesondheidsnavorsing se Etiese Komitee van die Universiteit van Stellenbosch. Toestemming om die navorsing te doen, is gegee deur die Gesondheidsnavorsing se Etiese Komitee van Stellenbosch Universiteit, die Provinsiale Streekshoof vir Primêre Gesondheidsdienste, asook die hoof van die Delftgemeenskap Gesondheidssentrum. Data het bewys dat die deelnemers hoofsaaklik vroulik is (n=145/72.5%) en die gemiddelde ouderdom 37.5 jaar. Deelnemers is meestal Xhosasprekend en geletterd en die meerderheid (n=112/56%) van die deelnemers se hoogste opleidingsvlak is tussen graad 9 en graad 12. Baie (n=73/36.5%) van die deelnemers het met HIV geleef vir 5 jaar, maar was op ART vir tussen 1 tot 3 jaar. Kennis is geassesseer deur vrae te stel oor verskeie aspekte van HIV en ART dwarsdeur die ondersoek. Puntetelling vir die 14 kritiese vrae het aan die lig gebring dat (n=0/0%) van die deelnemers goeie kennis het, (n=40/20%) van die deelnemers beskik oor gemiddelde kennis en (n=160/80%) van die deelnemers se kennis is gering. Die gemiddelde puntetelling vir al die deelnemers van al 20 kennisvrae wat getoets is, is (12.6/63%). Die bevindinge bewys dat die algehele kennis (n= 160/80%) gering is. Basiese terminologie en beginsels van HIV/VIGS en ART word nie begryp nie en ernstige wanopvattinge aangaande die siekte is geopenbaar.

Thesis (PhD)--Stellenbosch University, 2015. / ENGLISH ABSTRACT: Introduction In the era of antiretroviral therapy (ART), people living with Human Immunodeficiency Virus (HIV) now have prolonged life spans. An emerging trend of non- acquired immune deficiency syndrome (AIDS) related complications now prevails in the aging HIV infected population. Increased levels of inflammation and chronic immune activation are associated with HIV infection. In the era of ART people living with HIV are at an increased risk of cardiovascular disease (CVD). Platelets play a pivotal role in both inflammation and immune activation and upon activation platelets degranulate and secrete various inflammatory, coagulatory and adhesion molecules. Activated platelets express surface P-selectin (CD62P) and are a key component of the coagulation pathway and serve as a link between inflammation and thrombosis. Activated platelets have been implicated in inflammatory and cardiovascular disease and have been identified as immune cells that play a crucial role in pathogen recognition and modulation of immune cells during infections. Several antiviral and antibacterial properties of platelet alpha granule contents have been established. Platelet aggregometry remains the most widely used technique to evaluate platelet function even though this technique is limited by many pre-analytical variables. Platelet flow cytometry on the other hand offers a rapid measurement of platelet function in their physiological environment with minimal artefactual activation. Few studies have however reported on standardized methods to evaluate platelet function in the context of HIV. Platelet function remains unclear and data on HIV infected treatment naïve individuals remains scarce. The aim of this project was to examine the relationship between platelet function and immune activation in patients with HIV Materials and methods This study consisted of five sub-studies, firstly platelet indices and levels of platelet activation were determined in a cohort of 330 participants (185 HIV infected ARV naïve and 145 uninfected healthy controls) using; flow cytometry and haemotology analyzers. The relationship between these indices and markers of platelet activation, disease progression and immune activation were assessed. Furthermore, levels of platelet activation and aggregation were evaluated in a cohort of 82 participants (41 HIV infected (ARV naïve) individuals and 41 uninfected healthy controls), using a novel whole blood flow cytometry based functional assay. These baseline levels were then correlated with markers of immune activation and disease progression in HIV. In a subsequent study, platelet function in a cohort consisting of 58 HIV infected (ARV naïve) and 38 uninfected controls was evaluated using flow cytometry. Platelet response was measured post stimulation with adenosine diphosphate (ADP) at concentrations known to induce reversible (0.04mM) and irreversible (0.2mM) platelet aggregation. In order to assess platelet function in HIV, platelet response was evaluated in a cohort consisting of 58 HIV infected (ARV naïve) and 38 uninfected controls. Platelets were activated using varying concentrations of ADP, arachidonic acid (AA) and collagen and platelet function was measured using flow cytometry. Levels of circulating platelet leukocyte aggregates (PLAs) were also measured using flow cytometry in a cohort consisting of 35 HIV-infected (ARV naïve) individuals and 32 uninfected healthy controls. Associations between PLAs, immune activation and disease progression in HIV infected individuals were determined. The final study evaluated platelet aggregates, platelet derived microparticles (PMPs) and microparticles (MPs) in a cohort consisting of 46 HIV infected (ARV-naïve) and 40 uninfected healthy controls. Associations between MPs, PMPs, platelet aggregates and markers of immune activation and disease progression were evaluated. Results HIV infected individuals showed decreased mean platelet volume levels (HIV mean 7.91 ± 0.85 vs. 8.52 ± 1.12, p<0.0001) that directly correlated with CD4 counts (r=-0.2898, p=0.0075) and viral load (r=0.2680, p=0.0177). Platelet distribution width (PDW) levels directly correlated (r=0.3455, p=0.0362) with active coagulation and inversely correlated (r=-0.3666, p=0.0463) with platelet aggregation. HIV infected individuals showed increased levels of platelet activation (%CD62P median 11.33[5.96-29.36] vs. control group 2.48[1.56-6.04], p=0.0001). In HIV, platelet function is retained and platelets showed increased response to submaximal concentrations of endogenous agonists. HIV infected individuals showed increased levels of circulating platelet monocyte aggregates (25.26[16.16-32.28] vs. control group 14.12[8.36- 18.83], p=0.0001) that directly correlated with markers of immune activation; %CD38/8 (r=0.54624, p=0.0155), viral load (r=0.633, p<0.009). Furthermore we report on increased levels of circulating MPs (median %MPs 1.7[0.95-2.83] vs. Control group 1.12[0.63-1.57], p=0.0160); PMPs (median %PMPs 26.64[11.33-36.62] vs. Control group 20.02[18.08-26.08], p=0.0133); activated PMPs (median CD62P MFI 3.81[3.46-4.54] vs. Control group 3.41[3.16-3.6], p=0.0037) and platelet aggregates (Median %CD62P 14.10[5.49-39.94] vs. Control group 0.17[0.10-10.99], p= 0.0097) in HIV infected asymptomatic individuals. Conclusion This study supports the potential use of the MPV and PDW as readily available markers of platelet activation and immune activation in HIV. We also showed elevated levels of activated platelets in HIV infected individuals that were hyper responsive to endogenous agonists in a concentration dependent manner. Platelet flow cytometry is a rapid and valuable technique in the evaluation of platelet function in HIV. The measurement of platelet function using flow cytometry allows the evaluation of platelet signalling pathways that may be modified in HIV infected individuals. Lastly we describe an optimized whole blood flow cytometry based assay for the evaluation of circulating microparticles (MPs), platelet derived microparticles (PMPs) and levels of activated platelets and aggregates which mimics the in vivo physiological environment of MPs. To the best of our knowledge, this study is the first to report on a novel approach in evaluating platelet function in HIV using a series of optimised whole blood flow cytometry based platelet assays. In addition, minimal work has been performed previously on platelet function in the context of HIV-infection; and particularly in a cohort of asymptomatic, untreated patients as defined for this study. / AFRIKAANSE OPSOMMING: Inleiding In die era van antiretrovirale terapie (ART), het mense wat met die menslike immuniteitsgebreksvirus (MIV) leef, het nou 'n verlengde lewensduur. 'N opkomende neiging van nie-verworwe immuniteitsgebreksindroom (vigs) heers nou in die verouderende MIV-besmette bevolking. Verhoogde vlakke van inflammasie en chroniese immuun aktivering word geassosieer met MIV-infeksie en in die era van ART loop mense wat met MIV leef, 'n verhoogde risiko van kardiovaskulêre siekte (KVS). Plaatjies speel 'n belangrike rol in beide inflammasie en immuun aktivering en met aktivering degranulate en skei plaatjies verskeie inflammatoriese, coagulatory en adhesie molecule af. Geaktiveerde plaatjies druk oppervlak P-selectin (CD62P) is 'n belangrike komponent van die stollings weg en dien as 'n skakel tussen inflammasie en trombose. Geaktiveerde plaatjies is in beide inflammasie en kardiovaskulêre siekte betrokke en is geïdentifiseer as immuun selle wat 'n deurslaggewende rol speel in die patogeen erkenning en modulasie van immuun selle tydens infeksies. Verskeie antivirale en antibakteriese eienskappe van plaatjie alpha korrel inhoud is vasgestel. Plaatjie aggregometry bly die mees gebruikte tegniek om plaatjie funksie te evalueer, alhoewel hierdie tegniek is beperk deur baie pre-analitiese veranderlikes. Plaatjie vloeisitometrie aan die ander kant bied 'n vinnige meting van plaatjie funksie in hul fisiologiese omgewing met 'n minimale artefactual aktivering. Min studies het egter berig op gestandaardiseerde metodes om plaatjie funksie in die konteks van MIV te evalueer. Plaatjie funksie is steeds onduidelik en data oor MIV besmet behandeling naïef individue bly skaars. Die doel van hierdie projek was om die verhouding tussen die plaatjie funksie en immuun aktivering in pasiënte met MIV te ondersoek. Materiaal en metodes Hierdie studie het bestaan uit vyf sub-studies. In die eerste plekis plaatjie indekse en vlakke van plaatjie aktivering bepaal in 'n groep van 330 deelnemers (185 MIV-besmette ARV naïef en 145 onbesmette gesonde kontrole) met behulp van vloeisitometrie en hematologie ontleders. Die verhouding tussen hierdie indekse en merkers van plaatjie aktivering, die siekte se progressive en immuun aktivering is beoordeel. Verder is die vlakke van plaatjie aktivering en samevoeging in 'n groep van 82 deelnemers (41 MIV-besmette (ARV naïef) individue en 41 onbesmette gesonde kontrole) geëvalueer, met behulp van 'n nuwe vol bloed vloeisitometrie gebaseerde funksionele toets. Hierdie basislyn vlakke is dan gekorreleer met merkers van immuun aktivering en die progreessie van die siekte in MIV. In 'n daaropvolgende studie, is plaatjie funksie in 'n groep wat bestaan uit 58 MIV besmet te (ARV naïef) en 38 onbesmette beheer geëvalueer met behulp van vloeisitometrie. Plaatjie reaksie is na stimulasie gemeet met adenosine diphophate (ADP) by konsentrasies bekend omkeer (0.04mM) te oorreed en onomkeerbaar (0.2mm) plaatjie aggregasie. Ten einde plaatjie funksie in MIV te evalueer, is plaatjie reaksie in 'n groep wat bestaan uit 58 MIV-besmette (ARV naïef) en 38 onbesmette kontrole geëvalueer. Die plaatjies is geaktiveer deur gebruik te maak van wisselende konsentrasies van ADP, is aragidoonsuur (AA) en kollageen en plaatjie funksie gemeet met behulp van vloeisitometrie. Vlakke van sirkulerende plaatjie leukosiet gemiddeldes is ook gemeet met behulp van vloeisitometrie in 'n groep wat bestaan uit 35 MIV-positiewe (ARV naïef) individue en 32 onbesmette gesonde kontrole. Assosiasies tussen leukosiet gemiddeldes, immuun aktivering en die progressive van ie siekte in MIV-besmette individue is ook bepaal. Die finale studie het plaatjie-gemiddeldes, plaatjie afgelei mikrodeeltjies en mikrodeeltjies geëvalueer in 'n groep wat bestaan uit 46 MIV besmet (ARV-naïewe) en 40 onbesmette gesonde kontrole. Assosiasies tussen mikrodeeltjies, plaatjie afgelei, plaatjie gemiddeldes en merkers van immuun aktivering en die siekte se progressie is geëvalueer. Resultate MIV-besmette individue het gedaalde gemiddelde plaatjie volume vlakke getoon (HIV gemiddelde 7,91 ± 0,85 8,52 ± 1,12 teen, p <0,0001) wat direk gekorreleer het met CD4-tellings (r = -0,2898, p = 0,0075) en virale (r = 0,2680, p = 0,0177). Plaatjie verspreiding breedte vlakke het direk gekorreleer met (r = 0,3455, p = 0,0362) met 'n aktiewe koagulasie en omgekeerd gekorreleer (r = -0,3666, p = 0,0463) met plaatjie aggregasie. MIV-besmette individue het verhoogde vlakke van plaatjie aktivering getoon (% CD62P mediaan 11,33 [5,96-29,36] teen kontrole groep 2,48 [1,56-6,04], p = 0,0001). In MIV, was plaatjie funksie behou en plaatjies het 'n verhoogde reaksie op submaksimale konsentrasies van endogene agoniste getoon. MIVbesmette individue het verhoogde vlakke van sirkuleer plaatjie monosiet-gemiddeldes gedemonstreer (25.26 [16,16-32,28] teen kontrole groep 14,12 [8,36-18,83], p = 0,0001) wat direk gekorreleer het met merkers van immuun aktivering; % CD38 / 8 (r = 0,54624, p = 0,0155), virale lading (r = 0,633, p <0,009). Verder rapporteer ons op verhoogde vlakke van sirkulerende mikrodeeltjies (mediaan% LP 1.7 [0,95-2,83] teen kontrole groep 1,12 [0,63-1,57], p = 0,0160); PMPs (mediaan% PMPs 26,64 [11,33-36,62] teen kontrole groep 20,02 [18,08-26,08], p = 0,0133); geaktiveer PMPs (mediaan CD62P MFI 3,81 [3,46-4,54] teen kontrole groep 3,41 [3,16- 3,6], p = 0,0037) en plaatjie gemiddeldes (Mediaan% CD62P 14,10 [5,49-39,94] teen 0.17 [0,10- 10,99], p= 0.0097) in MIV besmet asimptomatiese individue. Gevolgtrekking Hierdie studie ondersteun die potensiële gebruik van die MPV en PDW as waardevolle geredelik waardevolle merkers van plaatjie aktivering en immuun aktivering in MIV. Ons het ook getoon verhoogde vlakke van geaktiveer de plaatjies in MIV-besmette individue getoon wat hyper reageer op endogene agoniste was in 'n konsentrasie-afhanklike wyse. Plaatjie vloeisitometrie is 'n vinnige en waardevolle tegniek in die evaluering van plaatjie funksie in MIV. Die meting van plaatjie funksie gebruik vloei cytometry maak die evaluering van plaatjie sein paaie wat in MIVgeïnfekteerde individue verander moontlik. Laastens het ons beskryf 'n hele bloed vloeisitometrie gebaseer de toets vir die evaluering van sirkulerende mikrodeeltjies, plaatjie afgelei mikrodeeltjies en vlakke van geaktiveer plaatjies en gemiddeldes wat lyk soos die in vivo fisiologiese omgewing van MP's. Na die beste van ons kennis, is hierdie studie die eerste om te rapporteer oor 'n nuwe benadering in die evaluering van plaatjie funksie in MIV met behulp van 'n reeks van new hele bloed vloeisitometrie gebaseer de plaatjie toetse. Daarbenewens is minimale werk voorheen uitgevoer op die plaatjie funksie in die konteks van MIV-infeksie; en veral in 'n groep van asimptomatiese, onbehandelde pasiënte soos vir hierdie studie. Hierdie projek het bewyse bygevoeg tot die teorie dat plaatjies, in MIV, kan 'n skakel wees tussen die aktiewe inflammatoriese reaksie en die toename in die aantal trombotische en kardiovaskulêre siekte waargeneem in pasiënte wat met hierdie siekte saamleef.

Thesis (PhD)--Stellenbosch University, 2008. / ENGLISH ABSTRACT: Setting Study conducted in Tygerberg, Cape Town in South Africa. Hypothesis Host biomarkers associated with the antimycobacterial immune response during active infection with M. tuberculosis and during anti-tuberculosis chemotherapy are indicative of bacterial killing in the host and can be used in models to predict eventual treatment outcome. Objectives 1. To investigate immune parameters that were selected in a biological context as biomarkers of the extent of disease and early response to anti-tuberculosis treatment. 2. To use selected immune parameters to characterise fast and slow responders to anti-tuberculosis therapy. Findings Evaluation of cytokine multiplex fluorescent bead-based immunoassays as a screening tool in the search for biomarkers The data showed that cytokine multiplex fluorescent bead-based immunoassays achieved acceptable recoveries to detect antigen-specific IFN- responses in whole blood supernatant making it attractive for biomarker screening. However, proper optimisation needs to be done and proper controls included when using these kits. Markers of extent of disease High levels of CRP at diagnosis were found to be associated with the presence of multiple cavities on chest X-rays. A high level of suPAR and sICAM-1 at diagnosis were associated with the extent of alveolar disease. Also significant were the associations between the level of granzyme B, LAG-3 at diagnosis and the size of the cavities. No significant associations were observed between sTNFRs or DR5 with the chest X-ray grading of tuberculosis disease. Early classification of fast and slow responders to anti-tuberculosis treatment After cross-validation classification, discriminant analysis (DA) and support vector machine (SVM) analysis of selected immune parameters (sICAM-1 CRP, granzyme B, suPAR, sTNFRs, LAG-3 and CD3dim/CD56+ (% of CD45+) resulted in a 75% to 100% correct classification of the fast responders and a 82% to 100% correct classification of the slow responders when using DA. For SVM, the correct classification of the fast responders ranged from 88% to 100%, and that for the slow responders ranged from 95% to 100%. Differential gene expression in fast and slow responders to treatment Direct comparison of fast and slow responders showed that IL-4 transcripts were significantly higher in the fast responders at week one after initiation of treatment when compared to slow responders. IL-42 was also differentially expressed. Although IL- was significantly up-regulated in both fast and slow responders after one week of treatment compared to diagnosis, IL- expression was more than two folds higher in slow responders than in fast responders. No significant differences between the fast and slow responders were observed in the expression of TGF-, TGF-RII, Foxp3 and GATA-3. Conclusion Predictive models for differential anti-tuberculous treatment responses combining host proteins are promising and should be included in larger prospective studies to find the optimal markers for inclusion into clinical trials of new drugs and for implementation into clinical practice. / AFRIKAANSE OPSOMMING: Ligging Studie onderneem in Tygerberg, Kaapstad, Suid-Afrika. Hipotese Gasheerbiomerkers wat verband hou met die antimikobakteriële immuunrespons tydens aktiewe infeksie deur M. tuberculosis en tydens teentuberkulose chemoterapie dui op bakteriële doding in die gasheer en kan in modelle gebruik word om die uiteindelike uitkoms van die behandeling te voorspel. Doelwitte 1. Om gekose immuunparameters in ’n biologiese konteks as biomerkers van die omvang van siekte en vroeë reaksie op behandeling te ondersoek. 2. Om gekose immuunparameters te gebruik om vinnige en stadige reageerders op teentuberkulosebehandeling te karakteriseer. Bevindings Evaluering van die sitokien veelvuldige fluoresseer-pêrelbaseerde immuuntoets (cytokine multiplex fluorescent bead-based immunoassays) as ’n siftingsinstrument in die soeke na biomerkers Die data het getoon dat die sitokien veelvuldige fluoresseer-pêrelgebaseerde immuuntoets in staat was om antigeenspesifieke IFN--respons te meet wat dit aanloklik maak vir biomerkersifting. Sorgvuldige optimering moet egter gedoen word en behoorlike beheer moet ingesluit word wanneer hierdie stelle gebruik word. Merkers van omvang van siekte Hoë vlakke van CRP by diagnose is getoon om verband te hou met die teenwoordigheid van veelvoudige holtes op die pasiënte se borskas x-strale. Hoë vlakke van suPAR en sICAM-1 by diagnose was assosieer met die omvang van alveolêre siekte. Die assosiasie tussen die vlakke van granzyme B, LAG-3 by diagnose en die grootte van die holtes was ook betekenisvol. Daar was geen betekenisvolle assosiasies toe sTNFRs of DR5 en die borskas x-straalgradering van tuberkulosesiekte nie. Vroeë klassifikasie van vinnige en stadige reageerders op teentuberkulosebehandeling Ná klassifikasie op grond van kruisstawing het diskriminant-analise (DA) en ondersteuningsvektormasjiene (SVM) van geselekteerde immuunparameters (sICAM-1 CRP, gransiem B, suPAR, sTNFRs, LAG-3 en CD3dim/CD56+ (% van CD45+)) gelei tot ’n 75% tot 100% korrekte klassifikasie van die vinnige reageerders met DA en ’n 82% tot 100% korrekte klassifikasie van stadige reageerders. Vir SVM het die korrekte klassifikasie van vinnige reageerders gewissel van 88% tot 100%, en vir stadige reageerders het dit gewissel van 95% tot 100%. Differensiële geenuitdrukking in vinnige en stadige reageerders op behandeling In vergelyking met die vlak by diagnose is die uitdrukkingsvlak van IL-4 in die vinnige reageerders betekenisvol opgereguleer met ’n faktor van 9.2 teen die eerste week ná die aanvang van behandeling, in kontras met die stadige reageerders. Daar was geen verskille tussen die vinnige en die stadige reageerders met betrekking tot die uitdrukking van TGF-, TGF-RII, Foxp3 en GATA-3 nie. Gevolgtrekking Voorspellende modelle vir differensiële tuberkulose behandelingsresponse wat gasheerproteïene kombineer, hou belofte in en behoort in groter prospektiewe studies ingesluit te word om die mees geskikte merkers te vind vir insluiting in kliniese proewe van nuwe middels en vir implementasie in kliniese praktyk.

Thesis (M.Pharm) -- University of Limpopo, 2013 / Introduction: Many patients with chronic illnesses including asthma, hypertension, diabetes mellitus and HIV/AIDS, have difficulties adhering to their recommended regimens. This may result in sub-optimal management and control of the illness. What a patient understands about a specific regimen, including the reason for taking each medication and the intricacies of dosing schedules and administration requirements, can have a profound influence on adherence. Monitoring the effectiveness and safety of the treatment administered helps to decide whether this should be continued, changed or stopped. Any drug may produce unwanted or unexpected adverse reactions. The choice of drugs depends on many factors, such as the pattern of diseases, the treatment facilities, the training and experience of the available personnel, the financial resources available and demographic or environmental factors. The level of adherence to medication among with hypertension and diabetes mellitus or anti-retroviral therapy has not been studied in Limpopo province Aim: The aim of the study was to determine the adherence patterns and the factors contributing to the adherence to treatment by diabetic, hypertensive and HIV/AIDS patients at Mokopane Hospital. Methodology: This was a cross-sectional, descriptive study conducted through use of a questionnaire administered as an exit interview at the pharmacy after the patients had consulted the doctor and received their medication from the pharmacy. Results: The data was collected over a period of two months, where every patient was seen only once using their hospital numbers to avoid repetition. The study included a total of 307 participants, 201 (60%) were patients on ARVs, 48 (16%) were on anti-hypertensive, 35 (11%) on anti-diabetic, and 23 (8%) on both anti-hypertensive and anti-diabetics. The respondents were predominantly female (n = 234; 76%) while 73 (24%) male. Similarly of the 201 participants on ARVs treatment, 153 (76%) were females and 48 (24%) were males; among those on anti-hypertensives only 11 (22%) were males. For the diabetics 6 (17%) were males and 29 (83%) were females. Of participants with both hypertension and diabetes 9 (39.1%) were males and 14 (60.9%) were females. Seventy-nine percent (79%) of respondents on ART, 69% of those on anti-hypertensive, 72% of those on anti-diabetics, and 66% of those on both anti-diabetics and anti-hypertensives were adherent to their treatment. The younger patients (21 to 40 years) were less likely to have forgotten to take their treatment in the last one month (21% of respondents) than the older patients (41 to 87 years), 34% of whom forgot to take medication in the month prior to the study. Most respondents 250 (81%) reportedly used an alarm system/timer as reminder to take their medication. Most of them reported that they received information regarding their condition and medication, though some were not sure of the side effects or indications for the medications. Adherence was attributed to faith in the healthcare worker, fear of complications of the condition, and a desire to control the condition. Non-adherence was seen as an active decision, partly based on misunderstandings of the condition and general disapproval of medication which was only taken in order to facilitate daily life or minimize adverse effects. Conclusion: The levels of non-adherence (21% to 34%) among the patients on chronic medication are not acceptable. Elderly patients were more likely to be non-adherent to their treatment compared to the younger patients. Some information gaps were identified regarding their conditions and indications for medications. It is therefore important for the health professional to provide patients with full information about the indications, efficacy, and side effects of the medication given to them. Ways should be found to support elderly patients who are on chronic medications; for instance through directly observed therapy and/or using treatment supporters.

Thesis (M.A. (Clinical psychology)) --University of Limpopo, 2012 / A number of studies have indicated that help-seeking pathways followed by individuals suffering from mental disorders and other conditions of ill-health are not random, but are structured by a range of psychosocial and cultural factors. The quality and seriousness of the distress provide the impetus to the pathway, but its direction and duration is shaped by the convergence of psychosocial and cultural factors. This study explored the help-seeking pathways followed by patients receiving mental health care services in Polokwane-Mankweng Hospital Complex (PMHC) in Limpopo Province (South Africa). A qualitative approach was followed and participants were selected through purposive sampling. Ten participants (5 males and 5 females) who are receiving mental health care services at PMHC and were apsychotic at the time were recruited to the study. Data were collected using semi-structured interviews and analyzed using content analysis. The following psychological themes emerged from the study: participants’ subjective notions of the events or factors that could have led to their mental illness; their explanations of mental illness; the reasons for entering the mental health care system; the pathways they followed before receiving mental health services in the hospital; concurrent use of hospital mental health services and other services; their experiences of living with mental illness; and, the role of significant others in this regard. The study revealed that various agencies and providers of health care are visited by individuals suffering from mental illness and that there is also some evidence of concurrent use of these services, i.e., Western and African. The findings emphasize that help-seeking pathways are mainly determined by the perceived causes of the illness, which are derived from cultural ideologies.