>Magister Scientiae - MSc / Introduction: A common complication of poorly managed mandible fractures is infection. There is a consensus amongst clinicians in treating infected mandible fractures in an immediate setting. The approach includes drainage of the purulent discharge, debridement of the fracture, removal of teeth in the fracture line and immediate fixation. Fixation can be load bearing or load sharing in nature. Although clinicians advocate for the use of a reconstruction load bearing plate, a double miniplate fixation could be an alternative. Aim: The aim is to assess the outcomes of double miniplate osteosynthesis in the immediate management of infected mandible fractures Material and method: A prospective cohort study was conducted. The sample size was 20 (n =20). Infections were treated with an incision and drainage and the fractures fixated with a double miniplate fixation system. Pain scores, fracture union, fracture stability and surgical times were measured. Follow–up visits included one week, six weeks and three months respectively.

Fescue toxicosis is a condition that afflicts livestock grazing endophyte-infected tall fescue and is particularly detrimental to pregnant mares. A two year evaluation study of a novel endophtye-infected cultivar, AGRFA-144 (A-144), did not induce fescue toxicosis in late-term pregnant mares. All mares delivered viable foals except in E+ group which had two viable foals, one stillborn-dystocia and one compromised foal which was euthanized at 72 h pp. Serum P4 concentrations were similar among A-144, NE+, and E- mares (p>0.05). Foal BW and foal/placental weight ratios were similar for A-144, NE+, and E- (p>0.05). Foal serum P4 was similar on 1 d and 2 d in all groups, but was lower (p = 0.049) in the A-144 group than the E- foals on day 0. Neutrophil/lymphocyte ratios were similar (~5:1) in all foals on d 0 and 2. IgG values were similar (p>0.05) among A-144, NE+, and E-.

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.

Most children born with HIV are maturing into adolescence due to the accessibility of medical support, specifically the availability of antiretroviral drugs. During adolescence, children are faced with critical adolescent developmental tasks in that they develop physically, cognitively and psychosocially, including assuming independence. As the adolescents living with perinatally acquired HIV mature, their care-givers start disclosing the adolescents’ HIV status to them. Attaining the knowledge of living with HIV is encompassed with worries of how to manage the illness as well as other social ills such as taking care of sick loved ones and dealing with losses of loved ones. It is also during this stage of development that adolescents living with HIV begin to form intimate relationships, thus issues of self-disclosing their status become a concern. The aim of this study was to explore and describe the perceptions of adolescents perinatally infected with HIV regarding the self-disclosure of their status to others. Following this, it was hoped that the study would come to conclusions and make recommendations regarding the wellness of and support for adolescents living with perinatally acquired HIV. A qualitative descriptive research approach with an interpretive paradigm was used to explore and describe the perceptions of the adolescents. A multiple case study design was suitable to explore and describe the perceptions of participants as they see it. Ethical approval for the study was obtained from the relevant body. A sample of 10 adolescents perinatally infected with HIV, whose status had been disclosed to them and were receiving clinical care and psychosocial support at a local clinic in Port Elizabeth, were selected through purposive sampling. Consent to undertake the study was provided by the head of the clinic in Port Elizabeth as well as by the adolescents’ caregivers. Assent to partake in the study was also provided by the participants. A deeper understanding of participants perceptions was explored through utilising multiple sources of data collection methods which included reflective journals and semi-structured interviews. Multiple data collection methods were used in order to collect rich data and for crystallisation of the data to take place. After the data was analysed themes were identified and described leading to the findings of the study. The findings of the study confirmed the perceptions of adolescents living with perinatally acquired HIV regarding the self-disclosure of their status. Adolescents perinatally infected with HIV perceive certain conditions as conducive to self-disclose their status against other conditions that were perceived to be unfavourable for the self-disclosure of their HIV status. Conditions permitting self-disclosure included the availability of trusting relationships with people who understand them as well as the need for support which subsequently highlights the benefits of self-disclosure. Benefits included and are not limited to clinical support from healthcare professionals and an understanding from teachers when they are absent from school during their monthly clinical visits. Although adolescents see the benefits of selfdisclosing their status they are however aware of the possible negative effects to self-disclose their status such as stigmatisation and discrimination manifested through isolation from peers and through moral judgement and rejection from the community. Peers living with HIV are perceived to be the closest people providing them with trusting and open relationships that foster self-disclosure. Adolescents also perceived adulthood as a phase were self-disclosing their HIV status could be possible with the belief that they would be more mature when they are adults. Recommendations are made for healthcare professionals and policy makers to formulate and implement guidelines on supporting adolescents living with perinatally acquired HIV regarding the self-disclosure of their status. Providing measures of support for adolescents living with perinatally acquired HIV in their different ecological systems could widen the choice of to whom and when to self-disclose their HIV status. / M (Social Work), North-West University, Potchefstroom Campus, 2015

Most children born with HIV are maturing into adolescence due to the accessibility of medical support, specifically the availability of antiretroviral drugs. During adolescence, children are faced with critical adolescent developmental tasks in that they develop physically, cognitively and psychosocially, including assuming independence. As the adolescents living with perinatally acquired HIV mature, their care-givers start disclosing the adolescents’ HIV status to them. Attaining the knowledge of living with HIV is encompassed with worries of how to manage the illness as well as other social ills such as taking care of sick loved ones and dealing with losses of loved ones. It is also during this stage of development that adolescents living with HIV begin to form intimate relationships, thus issues of self-disclosing their status become a concern. The aim of this study was to explore and describe the perceptions of adolescents perinatally infected with HIV regarding the self-disclosure of their status to others. Following this, it was hoped that the study would come to conclusions and make recommendations regarding the wellness of and support for adolescents living with perinatally acquired HIV. A qualitative descriptive research approach with an interpretive paradigm was used to explore and describe the perceptions of the adolescents. A multiple case study design was suitable to explore and describe the perceptions of participants as they see it. Ethical approval for the study was obtained from the relevant body. A sample of 10 adolescents perinatally infected with HIV, whose status had been disclosed to them and were receiving clinical care and psychosocial support at a local clinic in Port Elizabeth, were selected through purposive sampling. Consent to undertake the study was provided by the head of the clinic in Port Elizabeth as well as by the adolescents’ caregivers. Assent to partake in the study was also provided by the participants. A deeper understanding of participants perceptions was explored through utilising multiple sources of data collection methods which included reflective journals and semi-structured interviews. Multiple data collection methods were used in order to collect rich data and for crystallisation of the data to take place. After the data was analysed themes were identified and described leading to the findings of the study. The findings of the study confirmed the perceptions of adolescents living with perinatally acquired HIV regarding the self-disclosure of their status. Adolescents perinatally infected with HIV perceive certain conditions as conducive to self-disclose their status against other conditions that were perceived to be unfavourable for the self-disclosure of their HIV status. Conditions permitting self-disclosure included the availability of trusting relationships with people who understand them as well as the need for support which subsequently highlights the benefits of self-disclosure. Benefits included and are not limited to clinical support from healthcare professionals and an understanding from teachers when they are absent from school during their monthly clinical visits. Although adolescents see the benefits of selfdisclosing their status they are however aware of the possible negative effects to self-disclose their status such as stigmatisation and discrimination manifested through isolation from peers and through moral judgement and rejection from the community. Peers living with HIV are perceived to be the closest people providing them with trusting and open relationships that foster self-disclosure. Adolescents also perceived adulthood as a phase were self-disclosing their HIV status could be possible with the belief that they would be more mature when they are adults. Recommendations are made for healthcare professionals and policy makers to formulate and implement guidelines on supporting adolescents living with perinatally acquired HIV regarding the self-disclosure of their status. Providing measures of support for adolescents living with perinatally acquired HIV in their different ecological systems could widen the choice of to whom and when to self-disclose their HIV status. / M (Social Work), North-West University, Potchefstroom Campus, 2015

MSc (Med), Epidemiology and Biostatistics, Faculty of Health Sciences, University of the Witwatersrand / Objectives: To evaluate differences in virologic outcomes between adolescents and pre-adolescents initiated on HAART and to determine the patient baseline variables associated with virologic suppression. Design: Retrospective cohort study using routinely collected clinic and outcome data. Setting: Public sector HIV paediatric facility at Harriet Shezi Children’s Clinic (Chris Hani Baragwanath Hospital) Soweto, South Africa. Patients: HIV infected pre-adolescents (5 to < 11 years) and adolescents (11 to <18 years) initiating HAART between 1 April 2004 and 31 December 2008. Main outcomes and measures: Primary: virologic suppression (HIV viral load ≤ 400 copies/ml) and viral rebound (single HIV viral load ≥ 400 copies/ml after initial suppression) at 24, 48, 72 and 96 week follow up intervals. Secondary: determination of baseline variables associated with virologic suppression. Survival analysis was performed using the Kaplan Meier method and modelling was based on Cox proportional hazards. Results: Both groups exhibited similar incidence rates of virologic suppression by the 24th week from HAART initiation. Adolescents had a slightly lower incidence rate of early virologic suppression in comparison to pre-adolescents (197/100 person years vs. 203/100 person years). However, the observed difference was not statistically significant at 5% significance level (IRR: 0.97, 95%CI: 0.81 - 1.15). In a sub-group of children who had not virologically suppressed by the 24th week (168 days) of follow up, adolescents were 42% less likely to achieve virologic suppression after this time point than pre-adolescents ([IRR: 0.58, 95%CI: 0.35, 0.93). In the sub-group of all female participants, lower hazards of virologic suppression by the 24th week (aHR 0.76, 95%CI 0.59-0.99) and 96th week (aHR 0.70, 0.55-0.90) of follow up were observed among female adolescents when compared with female pre-adolescents. Additionally, clinically advanced disease was observed as a risk factor for non-virologic suppression by the 96th week of follow up among participants of all ages (aHR 0.75, 95%CI 0.64 -0.87). After 60 weeks from the initial virologic suppression, adolescents were twice more likely to experience rebound after this point than pre-adolescents (IRR: 2.33, 95%CI: 1.00 - 5.13). Conclusion: Given the potential for resistant strains of the HIV virus and the public health threat this presents, health care teams face complicated dilemmas regarding initiation of HAART to adolescents, particularly female adolescent patients who are likely to be non-adherent. Findings from the study advocate for intensified adherence and treatment support for all adolescents initiated on HAART to achieve virologic suppression within the first 6 months of treatment, a time after which they have been shown to exhibit inferior virologic suppression rates. Once virologic suppression has been attained, adolescents require prolonged treatment support to maintain long term virologic suppression at levels observed among pre-adolescents. We recommend further research into the comparison of virologic outcomes between pre-adolescents and adolescents on HAART, through prospective study designs. Qualitative study designs are also important to bridge the knowledge gaps on the barriers to HAART encountered by female adolescents.

Background: During the 1980s, the fear of HIV spread over the world. Health professionals'attitudes to patients with HIV, was negatively impacted because of their fear to be infected.Patients with HIV have therefore,during disease history's first two decades, experienced stigma and discrimination in the response from health professionals. Because of the increasing knowledge of HIV it is of interest to study patients' contemporary experiences of the encounter with health professionals. Aim:To explore how patients with HIV experiencing the meeting with health professionals. Method:Literature study with seven qualitative and three quantitative articles. Results:Two themes were found; to be discriminated and to be powerless and extradited. To be discriminated describes that patients in several cases been treated differently than others, by health professionals.To be powerless and extradited describes that patients are not allowed tobe involved in their care and they have distrust to health care providers.Conclusion:Patients with HIV experience discrimination, excessive precautions and ignorance which cause a care suffering. It is important that the nurse is aware of the deficiencies in the treatment to work towards a good care relationship.There is a great need for further research regarding to explore how patients with HIV experiencing the treatment from health professionals.

Orientador: Antonio Zuliani / Resumo: A progressão da doença na criança infectada pelo HIV associou-se à elevação do nível sérico de IgE total em alguns estudos. O mecanismo responsável por esta elevação ainda não foi claramente elucidado. O desbalanço na produção e liberação de citocinas de perfil Th1 e Th2, que ocorre após a infecção pelo HIV, tem sido proposto como um possível mecanismo para a elevação da IgE. Foram avaliadas neste estudo, 29 crianças de ambos os sexos, infectadas pelo HIV, acompanhadas no Ambulatório de Imunologia Pediátrica da Faculdade de Medicina de Botucatu-UNESP, com idade variando de 3 a 182 meses, com o objetivo de analisar os níveis séricos de IgE nessas crianças e sua correlação com presença de categorias clínicas e imunológicas mais graves, carga viral elevada e aumento da prevalência de alergia. A classificação clínica destes pacientes mostrou duas crianças (6,9%) na categoria N, sete (24,14%) na A, 12 (41,38%) na B e oito (27,58%) na C. Já a classificação imunológica mostrou três crianças (10,3%) na categoria 1, 16(55,2%) na 2 e 10 (34,5%) na 3. Após a aplicação do questionário alergológico, 11 crianças (37,93%) apresentaram história positiva de sintomas alérgicos, e quatro destes pacientes (13,79%) apresentaram teste cutâneo de hipersensibilidade imediata positivo a um ou mais dos aeroalérgenos testados. Os resultados mostraram níveis elevados de IgE em 17 crianças (58,62%), e estes foram numericamente maiores nos pacientes pertencentes à categoria clínica mais grave (C) em relação àqueles das outras categorias clínicas, mas sem diferença estatisticamente significante. Não foi encontrada diferença entre a freqüência de crianças com IgE elevada pertencentes às categorias clínicas e imunológicas mais graves e aquelas mais leves... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The progression of the disease in the infected child by HIV toke part in the elevation of the serum level of total IgE in some studies. The mechanism responsible for this elevation was still not clearly elucidated. The oscillation in the production and liquidation of Th1 and Th2 cytokines, that occur after the infection by HIV, have been proposed as a possible mechanism to the IgE elevation. In this study was evaluated 29 children of both sex, infected by HIV, accompanied in the Clinic of Pediatric Immunology of Botucatu Medical School - UNESP, with ages from 3 to 182 months, with the objective of analyze the serum levels of IgE in these children and the co-relation with the presence of the categories clinic and immunological more severe, high load viral and increase of the allergic diseases prevalence. The clinic classification of these patients showed two children (6,9%) in N category, seven (24,14%) in B and eight (27,58%) in C. While the immunologic classification showed three children (10,3%) in the category 1, sixteen (55,2%) in the 2 and ten (34,5%) in the 3. After the application of the allergologic questionnaire, eleven children (37,93%) presented positive history of allergic symptoms, and four of these patients (13,79%) presented positive immediate cutaneous hypersensitive test to one or more of the inhalant allergens tested. The outcomes showed high levels of IgE in 17 children (58,62%), and these were numerically greater in the patients in the more severe clinic category (C) in relation to those of the others clinic categories, but without significant statically difference. The difference between the frequency of children with high IgE in the clinic and immunologic categories more severe and that more soft was not founded. The load viral values were significantly lower in the group... (Complete abstract, click electronic access below) / Mestre

Made available in DSpace on 2014-06-11T19:33:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2001Bitstream added on 2014-06-13T21:06:10Z : No. of bitstreams: 1 ripari_vr_me_botfm.pdf: 630015 bytes, checksum: a0b3099a4a3f8f782d7e68393790552a (MD5) / A progressão da doença na criança infectada pelo HIV associou-se à elevação do nível sérico de IgE total em alguns estudos. O mecanismo responsável por esta elevação ainda não foi claramente elucidado. O desbalanço na produção e liberação de citocinas de perfil Th1 e Th2, que ocorre após a infecção pelo HIV, tem sido proposto como um possível mecanismo para a elevação da IgE. Foram avaliadas neste estudo, 29 crianças de ambos os sexos, infectadas pelo HIV, acompanhadas no Ambulatório de Imunologia Pediátrica da Faculdade de Medicina de Botucatu-UNESP, com idade variando de 3 a 182 meses, com o objetivo de analisar os níveis séricos de IgE nessas crianças e sua correlação com presença de categorias clínicas e imunológicas mais graves, carga viral elevada e aumento da prevalência de alergia. A classificação clínica destes pacientes mostrou duas crianças (6,9%) na categoria N, sete (24,14%) na A, 12 (41,38%) na B e oito (27,58%) na C. Já a classificação imunológica mostrou três crianças (10,3%) na categoria 1, 16(55,2%) na 2 e 10 (34,5%) na 3. Após a aplicação do questionário alergológico, 11 crianças (37,93%) apresentaram história positiva de sintomas alérgicos, e quatro destes pacientes (13,79%) apresentaram teste cutâneo de hipersensibilidade imediata positivo a um ou mais dos aeroalérgenos testados. Os resultados mostraram níveis elevados de IgE em 17 crianças (58,62%), e estes foram numericamente maiores nos pacientes pertencentes à categoria clínica mais grave (C) em relação àqueles das outras categorias clínicas, mas sem diferença estatisticamente significante. Não foi encontrada diferença entre a freqüência de crianças com IgE elevada pertencentes às categorias clínicas e imunológicas mais graves e aquelas mais leves... / The progression of the disease in the infected child by HIV toke part in the elevation of the serum level of total IgE in some studies. The mechanism responsible for this elevation was still not clearly elucidated. The oscillation in the production and liquidation of Th1 and Th2 cytokines, that occur after the infection by HIV, have been proposed as a possible mechanism to the IgE elevation. In this study was evaluated 29 children of both sex, infected by HIV, accompanied in the Clinic of Pediatric Immunology of Botucatu Medical School - UNESP, with ages from 3 to 182 months, with the objective of analyze the serum levels of IgE in these children and the co-relation with the presence of the categories clinic and immunological more severe, high load viral and increase of the allergic diseases prevalence. The clinic classification of these patients showed two children (6,9%) in N category, seven (24,14%) in B and eight (27,58%) in C. While the immunologic classification showed three children (10,3%) in the category 1, sixteen (55,2%) in the 2 and ten (34,5%) in the 3. After the application of the allergologic questionnaire, eleven children (37,93%) presented positive history of allergic symptoms, and four of these patients (13,79%) presented positive immediate cutaneous hypersensitive test to one or more of the inhalant allergens tested. The outcomes showed high levels of IgE in 17 children (58,62%), and these were numerically greater in the patients in the more severe clinic category (C) in relation to those of the others clinic categories, but without significant statically difference. The difference between the frequency of children with high IgE in the clinic and immunologic categories more severe and that more soft was not founded. The load viral values were significantly lower in the group... (Complete abstract, click electronic access below)

Made available in DSpace on 2015-08-20T17:09:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-12-15. Added 1 bitstream(s) on 2015-08-20T17:26:50Z : No. of bitstreams: 1 000840924.pdf: 281597 bytes, checksum: 09f286c23a8bb920c8b7c0ce71f73d05 (MD5) / Há algumas poucas evidências de que danos teciduais causados por parasitas gastrintestinais em ovinos promovem estresse oxidativo, porém os mecanismos que causam o desequilíbrio entre os oxidantes e antioxidantes não estão bem estabelecidos. O presente trabalho objetivou comprovar a hipótese de que o estresse oxidativo ocorre em ovinos infectados por Haemonchus contortus e que este varia com a resistência racial. Para tanto foram investigadas as relações entre o estresse oxidativo causado pela infecção por H. contortus, a carga parasitária, a anemia e a hipoalbuminemia. Para tal, ovinos da raça Suffolk (n=15) e Santa Inês (n=22) foram desverminados e após confirmado a ausência de ovos nas fezes (dia 0), todos animais foram infectados por via oral com 5000 larvas de terceiro estágio (L3) de H. contortus. A quantidade de ovos por grama de fezes (OPG) e a concentração de diferentes marcadores plasmático de estresse oxidativo (peroxidação lipídica, albumina, ácido úrico, bilirrubina total, capacidade antioxidante total, concentração de oxidante total e o índice de estresse oxidativo) foram quantificadas antes (dia 0) e com 28, 32 e 42 dias da infecção experimental, em ambas as raças. As alterações dos biomarcadores de estresses oxidativo pós-infecção variaram com a raça, tendo em comum ovinos Suffolk e Santa Inês um aumento de TOC no dia 28, seguido de um aumento de TAC no dia 42. Ovinos da raça Suffolk apresentaram maior carga parasitária em todos os momentos pós-infecção, sendo que nesta raça o OPG correlacionou-se com a concentração de oxidante total (TOC) (r=58; p<0,02) e na raça Santa Inês o OPG se correlacionou com a bilirrubina (r=0,49; p<0,02). As alterações dos marcadores de estresse oxidativo pós-infecção não foram associados à anemia e à hipoalbuminemia. Durante os primeiros 42 dias pós-infecção o... (Resumo completo, clicar acesso eletrônico Abaixo) / There are some little evidence that tissue damage caused by gastrointestinal parasites in sheep promote oxidative stress, but the mechanisms that cause the imbalance between oxidants and antioxidants are not well established. This study aimed to prove the hypothesis that oxidative stress occurs in sheep infected with Haemonchus contortus and that this varies with racial resistance. Therefore, we investigated the relationship between oxidative stress caused by infection with H. contortus, the parasite load, anemia and hypoalbuminemia. To this end, Suffolk sheep breed (n = 15) and Santa Inês (n = 22) were wormed and after confirmed the absence of eggs in the feces (day 0), all animals were infected orally with 5000 third-stage larvae (L3) from H. contortus. The number of eggs per gram of feces (EPG) and the concentration of different plasma markers of oxidative stress (lipid peroxidation, albumin, uric acid, total bilirubin, total antioxidant capacity, total oxidant concentration and oxidative stress index) were quantified before (day 0) and 28, 32 and 42 days of experimental infection in both breeds. The amendments to the post-infection oxidative stress biomarkers varied with the race, having in common Suffolk and Santa Inês sheep the total oxidant concentration (TOC) increase on the 28th, followed by an increase of TAC on day 42. Breed Sheep Suffolk had higher parasite burden in all post-infection times, and this race the OPG correlated with the TOC (r = 58; p <0.02) and Santa Ines the OPG correlated with bilirubin (r = 0.49; p <0.02). The amendments to the post-infection oxidative stress markers were not associated with anemia and hypoalbuminemia. During the first 42 days post-infection with H. contortus, oxidative stress index varied according to race, in part due to increased oxidant production probably caused by tissue injury and also because of a probable compensatory ... (Complete abstract electronic access below)