Made available in DSpace on 2014-08-20T13:32:50Z (GMT). No. of bitstreams: 1 dissertacao_caroline_gomes_lucas.pdf: 894020 bytes, checksum: 8d27baa8c8ae08744efe112062ff8b86 (MD5) Previous issue date: 2014-02-19 / The possibility of increasing the genetic pattern and animal production make the in vitro production of embryos an extremely valuable technique for the technological development of livestock. However, due to the need for mimicking the in vivo process, that consists in several interdependent steps there are difficulties in setting the optimal conditions for each situation performed. The improvement of in vitro maturation (IVM) protocols through supplementation with different molecules can increase the efficiency of the culture medium and improve the competence of oocytes for fertilization and embryogenesis. A promising approach is the realization of mediated delivery of nanocarriers molecules. Tretinoin (TTN, all- trans retinoic acid - ATRA ) is a natural retinoid and active metabolite of vitamin A with important action in cell proliferation and differentiation and embryonic development under both in vivo and in vitro conditions. TTN acts on the cytoplasmic maturation process, in the initial embryonic development and oocyte competence, improving the quality of embryos generated. The combinations of tretinoin with polymeric nanoparticles are alternatives to enhance the solubility and chemical stability of this molecule, allowing controlled release and decreased degradation. The objective of this study was to evaluate the effects of IVM medium supplementation with tretinoin-loaded lipid-core nanocapsules (TTN-LNC) at concentrations of 0.25, 0.5 and 1 μM, by analysis of embryonic development until the blastocyst stage, production of reactive oxygen species (ROS), and expression of genes related to apoptosis and pluripotency. As main results, TTN-LNC 0.25 μM increased the rate of blastocyst production and reduced ROS production. In addition, TTN and TTN-LNC induced a lower gene expression of Bax and SHC1, suggesting beneficial effects on the development of embryos. The results indicate that nanoencapsulation allows the use of a lower dose of TTN-LNC with consequent obtention of higher percentages of blastocyst production and decreased production of ROS, making nanoembriology a potential tool for improving bovine embryos IVP. / A possibilidade de aumento do padrão genético e da produção animal torna a produção in vitro (PIV) de embriões uma técnica extremamente valiosa para o desenvolvimento tecnológico da pecuária. No entanto, devido a necessidade de uma mimetização do processo in vivo, que consiste em várias etapas interdependentes, há dificuldades em ajustar as condições ótimas requeridas para cada situação reproduzida. O melhoramento dos protocolos de maturação in vitro (MIV) através da suplementação com diferentes moléculas permite aumentar a eficiência dos meios de cultivo e melhorar a competência de oócitos para a fertilização e embriogênese. Uma abordagem altamente promissora é a realização da entrega de moléculas mediada por nanocarreadores. A tretinoína (TTN, ácido retinóico all-trans - ATRA) é um retinóide natural e metabólito ativo da vitamina A, com ação importante na proliferação e diferenciação celular, e no desenvolvimento embrionário tanto em condições in vivo como in vitro. A TTN age no processo de maturação citoplasmática, no desenvolvimento inicial embrionário e competência oocitária melhorando a qualidade dos embriões gerados. A associação da tretinoína à nanopartículas poliméricas surge como alternativa para melhorar a solubilidade e estabilidade química desta molécula, possibilitando uma liberação controlada e redução da degradação. O objetivo deste trabalho foi avaliar os efeitos da suplementação com nanocápsulas de núcleo lipídico associadas à tretinoína (TTN-LNC) no meio de MIV, nas concentrações de 0,25, 0,5 e 1 μM, através da análise do desenvolvimento embrionário até o estágio de blastocisto, produção de espécies reativas de oxigênio (EROs) e expressão de genes relacionados a apoptose e pluripotência. Como principais resultados, a TTN-LNC a 0,25 μM aumentou a taxa de produção de blastocistos e reduziu a produção de EROs. Além disso, TTN e TTN-LNC induziram uma menor expressão dos genes Bax e SHC1 sugerindo efeitos benéficos sobre o desenvolvimento embrionário. Os resultados indicam que a nanoencapsulação permite a utilização de uma menor dose de TTN-LNC com consequente obtenção de maiores porcentagens de produção de blastocistos e diminuição da produção de EROs, tornando a nanoembriologia uma ferramenta potencial para a melhora da técnica de PIV de embriões bovinos.

Malgré le succès de l’Aide Médicale à la Procréation (AMP), des données récentes suggèrent un lien entre le recours à l’AMP et des pathologies liées à des erreurs épigénétiques. Afin d’évaluer l’impact des procédés in vitro de l’AMP sur la méthylation de l’ADN, nous avons analysé : 1) le profil de méthylation de 2 locus soumis à empreinte, H19DMR et KvDMR1, dans des ovocytes recueillis immatures, vitrifiés, puis mûris in vitro après réchauffement. Nous avons montré pour la première fois que le procédé vitrification/MIV pouvait constituer une alternative prometteuse pour préserver le potentiel procréatif des femmes avant un traitement anticancéreux, puisqu’il n’altérait pas l’empreinte parentale. 2) le profil de méthylation de H19DMR dans des embryons humains en retard de développement ainsi que dans les gamètes des géniteurs. Nous avons mis en évidence des anomalies de l’empreinte dans ces embryons, sans lien apparent avec les indications d’ICSI mais liées à des altérations survenues soit au cours de l’ovogenèse, soit au cours du développement précoce. 3) le profil de méthylation des promoteurs d’OCT4 et NANOG, gènes essentiels à l’expression de la pluripotence, dans des embryons bloqués après culture prolongée. Nous avons montré que le promoteur d’OCT4 était significativement hyperméthylé dans les embryons bloqués, en particulier dans la population de couples présentant uniquement une infertilité masculine, alors que le promoteur de NANOG était hypométhylé / Despite the success of Assisted Reproductive Technologies (ART), recent data suggest a link between the use of ART and diseases related to epigenetic errors. To evaluate the impact of ART on DNA methylation, we analyzed: 1) the methylation profile of 2 imprinted loci, H19DMR and KvDMR1, in immature oocytes which were vitrified and matured in vitro after warming. We have shown for the first time that vitrification/IVM process did not alter the imprinting. Then, this new technology could be a promising alternative to preserve the procreative potential of women before cancer treatment. 2) the methylation profile of H19DMR in human embryos with developmental anomalies and in the gametes of the parents. We have shown that imprinting errors in these embryos have no apparent link with ICSI indications, but were related to alterations in H19DMR occurring either during oogenesis or early development. 3) the methylation profile of the promoters of OCT4 and NANOG, essential genes for the expression of pluripotency in arrested embryos after prolonged culture. We have shown that the promoter of OCT4 was highly methylated in arrested embryos particularly in the population of couples with male infertility only, whereas the NANOG promoter was hypomethylated

Afrikaans text / Die studie ondersoek die leemte aan teoreties gefundeerde riglyne om pleegouers in die bekendmakingsproses van hulle kind se MIV-positiewe status te ondersteun Die studie geskied binne die teoretiese raamwerk van ʼn intervensienavorsingsmodel. In die empiriese navorsing is die vrese en probleme van pleegouers by die bekendmakingsproses ondersoek. Daar is bevind dat hierdie vrese en probleme in ag geneem moet word in die beoogde riglyne. Die kognitiewe ontwikkeling van die kind is deur middel van ʼn literatuurstudie ondersoek om vas te stel watter kennis, denke en inligting die kind op verskillende ouderdomme begryp. Daar is bevind dat kinders wat MIV-positief is, moontlike agterstande ondervind en dat die riglyne gevolglik gebaseer moet word op die toenemende ontwikkeling van die kind, met begrip vir individuele ontwikkelingsverskille. Voorts is bevind dat pleegouers se eie gereedheid ʼn belangrike rol speel. Alhoewel die pleegouer die bekendmakingsproses self moet aanvoer en hanteer is dit belangrik dat die pleegouers deur ʼn interdissiplinêre span ondersteun en begelei sal word. / This study investigates the absence of theoretical grounded guidelines to support foster parents when disclosing paediatric HIV. The study was done within the theoretical framework of an intervention research model. The empirical research investigated the fears and problems experienced by foster parents during the disclosure process. It was found that these fears and problems should be taken into account when compiling guidelines. The child‟s cognitive development was researched by way of a literary study in order to determine what knowledge, thoughts and information the child is able to grasp at different ages. It was found that children who are HIV positive could possibly lag behind and that the guidelines should therefore be based on the accumulative development of the child, with consideration given to individual developmental differences. Furthermore, it was established that foster parents‟ own readiness plays an important role. For this reason the foster parents should be supported and guided by an interdisciplinary team, but that they themselves should take care and execute the process of disclosure. / Social Work / M. Diac. (Spelterapie)

Afrikaans text / Die studie ondersoek die leemte aan teoreties gefundeerde riglyne om pleegouers in die bekendmakingsproses van hulle kind se MIV-positiewe status te ondersteun Die studie geskied binne die teoretiese raamwerk van ʼn intervensienavorsingsmodel. In die empiriese navorsing is die vrese en probleme van pleegouers by die bekendmakingsproses ondersoek. Daar is bevind dat hierdie vrese en probleme in ag geneem moet word in die beoogde riglyne. Die kognitiewe ontwikkeling van die kind is deur middel van ʼn literatuurstudie ondersoek om vas te stel watter kennis, denke en inligting die kind op verskillende ouderdomme begryp. Daar is bevind dat kinders wat MIV-positief is, moontlike agterstande ondervind en dat die riglyne gevolglik gebaseer moet word op die toenemende ontwikkeling van die kind, met begrip vir individuele ontwikkelingsverskille. Voorts is bevind dat pleegouers se eie gereedheid ʼn belangrike rol speel. Alhoewel die pleegouer die bekendmakingsproses self moet aanvoer en hanteer is dit belangrik dat die pleegouers deur ʼn interdissiplinêre span ondersteun en begelei sal word. / This study investigates the absence of theoretical grounded guidelines to support foster parents when disclosing paediatric HIV. The study was done within the theoretical framework of an intervention research model. The empirical research investigated the fears and problems experienced by foster parents during the disclosure process. It was found that these fears and problems should be taken into account when compiling guidelines. The child‟s cognitive development was researched by way of a literary study in order to determine what knowledge, thoughts and information the child is able to grasp at different ages. It was found that children who are HIV positive could possibly lag behind and that the guidelines should therefore be based on the accumulative development of the child, with consideration given to individual developmental differences. Furthermore, it was established that foster parents‟ own readiness plays an important role. For this reason the foster parents should be supported and guided by an interdisciplinary team, but that they themselves should take care and execute the process of disclosure. / Social Work / M. Diac. (Spelterapie)

The effects of HIV/AIDS and subsequent opportunistic infections and/or associated conditions on the development of infected children are substantial. Considerable delays and/or disorders in communication development have been noted in the HIV/AIDS infected child, as well as the need for Early Communication Intervention (ECI) services for this population. A dearth of locally relevant data regarding the speech, language and hearing development of HIV/AIDS infected children within the South African context currently exists. The objective of this study was to describe the characteristics of a group of HIV/AIDS infected children being managed at an outreach clinic of regional hospital in Gauteng. A cross-sectional, retrospective, non-experimental, descriptive, quantitative research design was used in this study. The main objective was achieved by analysing the clinic records of 203 children infected with HIV/AIDS between the ages of 0 – 5 years 11months through the use of a pre-designed checklist. A questionnaire completed by four medical doctors practicing at the HIV/AIDS clinic within the hospital was also used. This allowed for the perceptions and practices of the medical doctors to be described. Results revealed that the majority HIV/AIDS infected children being managed at the outreach clinic were significantly immunocompromised and diagnosed with Stage III or Stage IV HIV/AIDS infection. Furthermore, results indicated the presence of several opportunistic infections and HIV/AIDS associated conditions (such as Tuberculosis, Candidiasis and Encephalopathy). A positive finding was that 76% of the HIV/AIDS infected children (n=153) were receiving Highly Active Antiretroviral Therapy (HAART) at the time of data collection. The most outstanding finding was that very few of the children with HIV/AIDS being managed at the outreach clinic were recorded as having speech, language and/or hearing delays and/or disorders. Similarly, referrals to other professionals as recorded in the children’s hospital records seemed to be limited to Social Workers and Dietitians, with only one child recorded as being referred to a Speech-Language Therapist and Audiologist for further management. It was unclear whether more children were in fact referred for additional intervention by other professionals and this was simply not recorded in the children’s records, or whether these referrals were in fact not made. Results from the questionnaires completed by the medical doctors working with the pediatric HIV/AIDS population within the outreach clinic were significant. Findings indicated that the majority of the respondents believed that HIV/AIDS infected infants were more at risk for developmental and communicative delays and/or disorders than the general population, and that this population would likely benefit from Speech-Language Therapy and/or Audiology intervention services. Respondents indicated that medical doctors working with the pediatric HIV/AIDS population were often not adequately informed regarding the effects of HIV/AIDS on communication development and that they would benefit from further training in this regard. The need for further research regarding the characteristics of the pediatric HIV/AIDS population, particularly on a larger sample, was described. This would assist in the development of a guideline for ECI service delivery for children infected with HIV/AIDS. The need for further training of other professionals regarding the effects that HIV/AIDS has on the communication development of the infected child, to assist with necessary referrals and teamwork, was also highlighted. AFRIKAANS : Suid-Afrika is een van die lande ter wêreld, wat die hoogste voorkoms van Menslike Immuniteitsgebrekvirus/ Verworwe Immuniteitsgebreksindroom (MIV/VIGS), toon - met die pediatriese populasie op die voorfront van hierdie epidemie. Die effek wat MIV/VIGS en opeenvolgende opportunistiese infeksies en/of ander geassosieerde toestande op die ontwikkeling van kinders het, is verreikend. Internasionale literatuur beskryf agterstande en/of akwykings in die kommunikasie ontwikkeling van kinders wat met MIV/VIGS geinfekteer is. Die behoefte vir Vroeë Kommunikasie Intervensie (VKI) vir hierdie populasie word ook gemeld. Daar bestaan egter slegs ‘n beperkte hoeveelheid relevante, plaaslike literatuur met betrekking tot die spraak-, taal- en gehoorontwikkeling van kinders met MIV/VIGS binne die Suid-Afrikaanse konteks. Die doelwit van hierdie studie was om die kenmerke van ‘n groep kinders, wat met MIV/VIGS besmet is en by ‘n streekshospitaal in Gauteng behandel word, te beskryf. ‘n Kwantitatiewe, nie-eksperimentele, terugwerkende, dwarsdeurige, beskrywende navorsingsontwerp is gebruik. Die hoofdoelwit was bereik deur die kliniekrekords van kinders wat met MIV/VIGS besmet is, te analiseer deur van ‘n vooraf-ontwerpte merklys gebruik te maak. Data is ook ingesamel deur middel van vraelyste wat deur mediese dokters, wat by MIV/VIGS klinieke binne die hospitale werk, voltooi is. Dit het toegelaat dat die persepsies en praktyke van die mediese dokters ook beskryf kon word. Resultate het getoon dat die meerderheid kinders met MIV/VIGS, wat by klinieke behandel word, se immuunsisteme ernstig onderdruk was en dat hulle met stadium III of stadium IV van MIV/VIGS gediagnoseer was. Die resultate het verder ook die voorkoms van verskeie opportunistiese infeksies en MIV/VIGS geassosieerde toestande aangedui. ‘n Positiewe bevinding was dat 76% van die kinders (n=153), wat met MIV/VIGS geinfekteer was, tydens die proses van data-insameling reeds Hoogsaktiewe Antiretrovirale Terapie (HAART) ontvang het. Die mees uitstaande bevinding was dat slegs ‘n geringe hoeveelheid kinders met MIV/VIGS by die kliniek, as met ‘n agterstand en/of afwyking in spraak, taal en/of gehoor, aangeteken is. Beperkte verwysings na ander professionele persone is ook in die kliniekrekords opgemerk. Verwysings was beperk tot Maatskaplike Werkers en Dieëtkundiges. Daar was slegs een aantekening van ‘n kind wat vir behandeling na ‘n Spraak- en Taalterapeut en Oudioloog verwys is. Dit is egter onduidelik of daar werklik meer verwysings na ander professionele persone gemaak is, maar net nie in die kinders se kliniekrekords aangedui is nie, of dat daar werklik min verwysings na ander professionele dissiplines gemaak is. Bykomend, was die resultate van voltooide vraelyste deur mediese dokters, wat met die pediatriese MIV/VIGS populasie in die kliniek werk, insiggewend. Bevindings dui aan dat die meerderheid proefpersone, wat aan die studie deelgeneem het, van mening is dat kinders wat met MIV/VIGS besmet is wel ‘n hoër risiko toon vir ontwikkelings- en kommunikasie agterstande en/of afwykings in vergeleke met die algemene populasie. Die proefpersone is verder ook van mening dat hierdie populasie wel van spraak- en taalterapie en/of oudiologiese intervensie sal baatvind. Proefpersone het verder aangedui dat mediese dokters, wat met die pediatriese MIV/VIGS populasie werk, nie ten volle ingelig is omtrent die effek van MIV/VIGS op kommunikasie ontwikkeling en dat hulle van verdere opleiding sal baatvind. Die behoefte vir verdere navorsing in die veld van pediatriese MIV/VIGS en kommunikasie ontwikkeling, binne die Suid-Afrikaanse konteks, word in hierdie studie beskryf. Dit sal as riglyn vir VKI dienslewering aan hierdie populasie dien. Daar is ook ‘n groot behoefte vir verdere opleiding van ander mediese professionele persone met betrekking tot pediatriese MIV/VIGS en die effek wat die op die kind se kommunikasie ontwikkeling het. / Dissertation (MCommunication Pathology)--University of Pretoria, 2010. / Speech-Language Pathology and Audiology / unrestricted

Text in Afrikaans / Die MIV/vigs-pandemie in Suid-Afiika- van die ergste in die wereld- toon geen tekens van afname nie. Miljoene kinders is reeds of wees gelaat of hewig geaffekteer deur die magdom impakte daarvan op gesinne en gemeenskappe. Die epidemie het voortdurend stygende sterftesyfers tot gevolg en die hewige las van die siekte rus swaar op MIV-positiewe sowel as MIV-negatiewe individue. Verder word tradisionele ondersteuningsnetwerke oorbelaai en/of gaan hulle tot niet. Gesinne en gemeenskappe verloor hul ekonomiese, sosiale en kulturele lewensvatbaarheid. Die pandemie hou, veral onder die armes, 'n geweldige bedreiging vir die gesondheid, welstand en regte van babas, kinders en jongmense in. 'n Groot gedeelte van die impak van MIV/vigs hou verband met die feit dat sommige kinders en hul gesinne beperkte toegang tot die elemente van 'n gesonde omgewing en goeie gesondheid het. Regerings, gemeenskappe en gesinne wat deur MIV/vigs geraak word, het minder tyd, energie en finansiële hulpbronne beskikbaar om op voorkomende gesondheidsorg te fokus. Benewens die impak op gesondheidstatus, word kinders se omstandighede ook as gevolg van MIV/vigsverwante probleme bemoeilik. Dit sluit verhoogde gesinsarmoede, 'n hoer risiko van verlating en weeslating, geforseerde migrasie, onterwing, sielkundige trauma, uitsluiting en diskriminasie, en fisiese en seksuele mishandeling in. Die derde vlaag van die epidemie, welke vlaag nou betree word, word gekenmerk deur 'n ontsettende hoe sterftesyfer, 'n ontploffing in die getal sorgbehoewende en weeskinders en 'n verhoging in menslike pyn en lyding. Die reg speel 'n baie belangrike rol in die beperking van hierdie impak van die MIV/vigs-pandemie op die lewens van alle kinders. MIV/vigs-reg is in die proses van evolusie of vorming en reeds bestaande teorieë kan aangewend word ten einde sekere vrae te beantwoord en probleme daaromtrent aan te spreek. Tog is daar 'n dringende behoefte aan MIV/vigs-spesifieke wetgewing en teorieë ten einde die impak van die pandemie op alle vlakke suksesvol te beheer. Verder het die Kinderreg so 'n mate van ontwikkeling bereik dat daar algemeen aanvaar word dat kinders 'n spesiale belangegroep binne die gemeenskap vorm. Die regsreëls met betrekking tot kinders verander gedurig en is ook nie geskik om volgens die tradisionele wyse, as privaat- of publiekreg, geklassifiseer te word nie. In die hieropvolgende proefskrif word die impak van MIV/vigs op sekere publiekregtelike, maar oorwegend privaatregtelike aspekte van die Suid-Afiikaanse kinderreg ondersoek, sowel as enkele metodes waarop die reg moontlik hierdie impak kan absorbeer en hanteer. Daar word ook in aparte hoofstukke na die impak van MIV/vigs op die lewens van kinders. sorgbehoewende kinders, egskeiding en die ouer-kind-verhouding verwys The HIV/aids pandemic in South Africa - one of the worst in the world - does not seem to be decreasing. Millions of children have already been either orphaned or heavily affected by the numerous impacts on families and communities associated with it. The epidemic brings on an ever-increasing mortality rate and the extreme burden thereof weighs down heavily on HIV-positive as well as HIV-negative individuals. Traditional support networks are further being heavily burdened or perish entirely. Families and communities lose their economical, social and cultural viability. The pandemic threatens, especially among the poorest, the health, wellbeing and rights of infants, children and young people. The impact of HIV/aids is to a great extent the result of the fact that some children and their families do not have sufficient access to a healthy environment and good health. Governments, communities and families affected by HIV/aids have less time, energy and financial resources available in order to enable them to focus on preventive healthcare. In addition to the impact on health status, children's circumstances are also being encumbered by HIV/aids-related problems, including family poverty, a higher risk of being abandoned or orphaned, forced migration, disinheritance, psychological trauma, ostracism and discrimination and physical and sexual abuse. The third wave of the epidemic, which wave is presently being experienced, is characterised by a high mortality rate, an increasing amount of children in need of care and orphaned children and an increase in human pain and suffering. The law plays an important role in the limitation of the impact of the HIV/aids pandemic on the lives of children. HIV/aids law is in the process of evolution or forming and existing theories can be used in order to answer certain questions and address certain issues relating to it. However, there is an urgent need for HIV/aids-specific legislation and theories in order to successfully manage the impact of the pandemic on all levels. Child law has also reached such an extent of development that children is now viewed as a special interest group within the community. The legal principles regarding children change constantly and cannot be classified in the traditional way, which is either as private or public law. In this thesis the impact of HIV/aids on certain aspects of the public and private law pertaining to children is examined. Ways in which the impact can be absorbed and managed by the law is also examined. The impact of HIV/aids on divorce, the parent-child relationship, children in need of care, and the impact of HIV/aids on the lives of children is examined in separate chapters. / Jurisprudence / LL. D.

Text in Afrikaans / Die MIV/vigs-pandemie in Suid-Afiika- van die ergste in die wereld- toon geen tekens van afname nie. Miljoene kinders is reeds of wees gelaat of hewig geaffekteer deur die magdom impakte daarvan op gesinne en gemeenskappe. Die epidemie het voortdurend stygende sterftesyfers tot gevolg en die hewige las van die siekte rus swaar op MIV-positiewe sowel as MIV-negatiewe individue. Verder word tradisionele ondersteuningsnetwerke oorbelaai en/of gaan hulle tot niet. Gesinne en gemeenskappe verloor hul ekonomiese, sosiale en kulturele lewensvatbaarheid. Die pandemie hou, veral onder die armes, 'n geweldige bedreiging vir die gesondheid, welstand en regte van babas, kinders en jongmense in. 'n Groot gedeelte van die impak van MIV/vigs hou verband met die feit dat sommige kinders en hul gesinne beperkte toegang tot die elemente van 'n gesonde omgewing en goeie gesondheid het. Regerings, gemeenskappe en gesinne wat deur MIV/vigs geraak word, het minder tyd, energie en finansiële hulpbronne beskikbaar om op voorkomende gesondheidsorg te fokus. Benewens die impak op gesondheidstatus, word kinders se omstandighede ook as gevolg van MIV/vigsverwante probleme bemoeilik. Dit sluit verhoogde gesinsarmoede, 'n hoer risiko van verlating en weeslating, geforseerde migrasie, onterwing, sielkundige trauma, uitsluiting en diskriminasie, en fisiese en seksuele mishandeling in. Die derde vlaag van die epidemie, welke vlaag nou betree word, word gekenmerk deur 'n ontsettende hoe sterftesyfer, 'n ontploffing in die getal sorgbehoewende en weeskinders en 'n verhoging in menslike pyn en lyding. Die reg speel 'n baie belangrike rol in die beperking van hierdie impak van die MIV/vigs-pandemie op die lewens van alle kinders. MIV/vigs-reg is in die proses van evolusie of vorming en reeds bestaande teorieë kan aangewend word ten einde sekere vrae te beantwoord en probleme daaromtrent aan te spreek. Tog is daar 'n dringende behoefte aan MIV/vigs-spesifieke wetgewing en teorieë ten einde die impak van die pandemie op alle vlakke suksesvol te beheer. Verder het die Kinderreg so 'n mate van ontwikkeling bereik dat daar algemeen aanvaar word dat kinders 'n spesiale belangegroep binne die gemeenskap vorm. Die regsreëls met betrekking tot kinders verander gedurig en is ook nie geskik om volgens die tradisionele wyse, as privaat- of publiekreg, geklassifiseer te word nie. In die hieropvolgende proefskrif word die impak van MIV/vigs op sekere publiekregtelike, maar oorwegend privaatregtelike aspekte van die Suid-Afiikaanse kinderreg ondersoek, sowel as enkele metodes waarop die reg moontlik hierdie impak kan absorbeer en hanteer. Daar word ook in aparte hoofstukke na die impak van MIV/vigs op die lewens van kinders. sorgbehoewende kinders, egskeiding en die ouer-kind-verhouding verwys The HIV/aids pandemic in South Africa - one of the worst in the world - does not seem to be decreasing. Millions of children have already been either orphaned or heavily affected by the numerous impacts on families and communities associated with it. The epidemic brings on an ever-increasing mortality rate and the extreme burden thereof weighs down heavily on HIV-positive as well as HIV-negative individuals. Traditional support networks are further being heavily burdened or perish entirely. Families and communities lose their economical, social and cultural viability. The pandemic threatens, especially among the poorest, the health, wellbeing and rights of infants, children and young people. The impact of HIV/aids is to a great extent the result of the fact that some children and their families do not have sufficient access to a healthy environment and good health. Governments, communities and families affected by HIV/aids have less time, energy and financial resources available in order to enable them to focus on preventive healthcare. In addition to the impact on health status, children's circumstances are also being encumbered by HIV/aids-related problems, including family poverty, a higher risk of being abandoned or orphaned, forced migration, disinheritance, psychological trauma, ostracism and discrimination and physical and sexual abuse. The third wave of the epidemic, which wave is presently being experienced, is characterised by a high mortality rate, an increasing amount of children in need of care and orphaned children and an increase in human pain and suffering. The law plays an important role in the limitation of the impact of the HIV/aids pandemic on the lives of children. HIV/aids law is in the process of evolution or forming and existing theories can be used in order to answer certain questions and address certain issues relating to it. However, there is an urgent need for HIV/aids-specific legislation and theories in order to successfully manage the impact of the pandemic on all levels. Child law has also reached such an extent of development that children is now viewed as a special interest group within the community. The legal principles regarding children change constantly and cannot be classified in the traditional way, which is either as private or public law. In this thesis the impact of HIV/aids on certain aspects of the public and private law pertaining to children is examined. Ways in which the impact can be absorbed and managed by the law is also examined. The impact of HIV/aids on divorce, the parent-child relationship, children in need of care, and the impact of HIV/aids on the lives of children is examined in separate chapters. / Jurisprudence / LL. D.

The background and problem statement focuses on antiretroviral therapy (ART) and the use of mobile technology to improve compliance within a primary health care (PHC) context in South Africa. South Africa is one of the countries, globally, with the highest HIV incidence and prevalence and ART enrolled patients visiting PHC facilities. Compliance to ART plays an integral part in effective HIV/AIDS management. HIV/AIDS management entails a complex process of patient education and pharmacological control to improve ART compliance in South Africa. Studies were done in South Africa on reminder messages as most studies focused on chronic conditions in general. A literature review explored what is known about ART and mobile technology to improve compliance. Literature confirmed that compliance through reminder messages were done worldwide and in Sub-Saharan countries. Previous research indicated that the compliance rate of the patients increased through reminder messages. Yet there is a gap in the literature regarding reminder messages combined with health education on ART compliance. The aim of the study was to determine the impact of reminder messages combined with health education on ART compliance among patients receiving ART at a PHC facility Methodology: The study followed a quantitative, experimental, intervention, randomised multi-group, pre- and post measurement design (Creswell, 2012:1, Welman et al., 2012:80). The research design is experimental because the researcher applied an intervention (reminder messages) to two experimental groups. Random sampling was applied and participants were grouped into three groups: Group A, (control group), Group B, (reminder messages only) and Group C (reminder messages combined with health education). A preand post-measurement design is followed as each participant’s pill count and return date were measured before and after the reminder messages with/without health education were given. The sample size was 202 eligible patients receiving Regime 1 and 2 ART’s (Lamuvidine, Tenofovir, Efavirenz, Nevirapine, Alluvia® and Zidovudine) at a PHC facility in the North West, South Africa (N=202). The sample size was determined with guidance of statistical services to ensure that results obtained from the study would be reliable and significant. Data collection was done in three phases. Phase one (1) consisted of collecting the biographical data and a pre-measurement of pill count and return dates for participants in Groups A, B and C. Phase two (2) consisted of sending bi-weekly messages (Group B) via WinSMS and with health education (Group C) for three (3) months. Phase three (3) consisted of post-measurement of participants’ pill count and return date for Groups A,B and C. Data collection stretched over six months (October 2013-March 2014), namely three months pre-measurement, then activation of intervention combined with another three months post-measurement. Descriptive and inferential statistical analysis was conducted through SPSS (SPSS Inc., 2013). Descriptive statistics indicated that more female patients visited the PHC facility for ART on a more regular basis. It was concluded that the experimental group proved a slight increase in compliance with regards to return date after the SMS intervention. No difference was noted in compliance to pill counts. It can also be concluded that pill counts is a complex monitoring procedure with room for error from the patients’ aspect. / MCur, North-West University, Potchefstroom Campus, 2015

The background and problem statement focuses on antiretroviral therapy (ART) and the use of mobile technology to improve compliance within a primary health care (PHC) context in South Africa. South Africa is one of the countries, globally, with the highest HIV incidence and prevalence and ART enrolled patients visiting PHC facilities. Compliance to ART plays an integral part in effective HIV/AIDS management. HIV/AIDS management entails a complex process of patient education and pharmacological control to improve ART compliance in South Africa. Studies were done in South Africa on reminder messages as most studies focused on chronic conditions in general. A literature review explored what is known about ART and mobile technology to improve compliance. Literature confirmed that compliance through reminder messages were done worldwide and in Sub-Saharan countries. Previous research indicated that the compliance rate of the patients increased through reminder messages. Yet there is a gap in the literature regarding reminder messages combined with health education on ART compliance. The aim of the study was to determine the impact of reminder messages combined with health education on ART compliance among patients receiving ART at a PHC facility Methodology: The study followed a quantitative, experimental, intervention, randomised multi-group, pre- and post measurement design (Creswell, 2012:1, Welman et al., 2012:80). The research design is experimental because the researcher applied an intervention (reminder messages) to two experimental groups. Random sampling was applied and participants were grouped into three groups: Group A, (control group), Group B, (reminder messages only) and Group C (reminder messages combined with health education). A preand post-measurement design is followed as each participant’s pill count and return date were measured before and after the reminder messages with/without health education were given. The sample size was 202 eligible patients receiving Regime 1 and 2 ART’s (Lamuvidine, Tenofovir, Efavirenz, Nevirapine, Alluvia® and Zidovudine) at a PHC facility in the North West, South Africa (N=202). The sample size was determined with guidance of statistical services to ensure that results obtained from the study would be reliable and significant. Data collection was done in three phases. Phase one (1) consisted of collecting the biographical data and a pre-measurement of pill count and return dates for participants in Groups A, B and C. Phase two (2) consisted of sending bi-weekly messages (Group B) via WinSMS and with health education (Group C) for three (3) months. Phase three (3) consisted of post-measurement of participants’ pill count and return date for Groups A,B and C. Data collection stretched over six months (October 2013-March 2014), namely three months pre-measurement, then activation of intervention combined with another three months post-measurement. Descriptive and inferential statistical analysis was conducted through SPSS (SPSS Inc., 2013). Descriptive statistics indicated that more female patients visited the PHC facility for ART on a more regular basis. It was concluded that the experimental group proved a slight increase in compliance with regards to return date after the SMS intervention. No difference was noted in compliance to pill counts. It can also be concluded that pill counts is a complex monitoring procedure with room for error from the patients’ aspect. / MCur, North-West University, Potchefstroom Campus, 2015

There is a global rise in the use of herbal products in combination with allopathic medicines, while most patients do not inform their health care providers of the use of these natural products. Both pharmacodynamic and pharmacokinetic interactions between herbal products and conventional drugs must be avoided for the wellbeing of the patient. Increasing evidence from in vitro and in vivo studies indicate that changed drug pharmacokinetics by co-administered herbs may be attributed to modulation of efflux drug transporters such as P-glycoprotein (P-gp). Garlic (Allium sativum), lemon (Citrus limonum) and beetroot (Beta vulgaris) are widely used by human immunodeficiency virus (HIV) patients, especially following the pronouncement by a former President of South Africa and the Ministers of Health at that time who promoted the use of these botanicals in HIV patients. The aim of this study was to measure the bi-directional in vitro transport of indinavir, a protease inhibitor, in the presence of crude extracts and pure phytoconstituents of A. sativum (L-alliin and diallyl disulphide), C. limonum (hesperidin and eriocitrin) and B. vulgaris (betaine monohydrate and ß-carotene) across excised porcine intestinal tissue in Sweetana-Grass diffusion chambers. In the negative control group, the transport of indinavir alone (200 M) was determined with no modulator added. In the positive control group, the transport of indinavir was determined in the presence of verapamil (100 M), a known P-gp related efflux inhibitor. The control experiments were used to indicate that the effects of the test compounds were caused by their action and not by chance interferences or external factors. Samples collected at pre-determined time intervals were analysed by means of a validated high performance liquid chromatography (HPLC) method and the transport was expressed as the apparent permeability coefficient (Papp) and the transepithelial flux (J) from which the efflux ratio (ER) and the net flux (Jnet) values were calculated. Statistical analysis was used to compare the results of the test compounds with the control groups in order to indicate significant differences. The mean ER value for indinavir in the negative control group was 1.41 ± 0.170 and in the positive control group it was 0.56 ± 0.0426. Statistically significant (p < 0.05) inhibition of indinavir efflux as indicated by reduced ER values was obtained for L-alliin (ER = 0.280 ± 0.030), diallyl disulphide (ER = 0.505 ± 0.034) and ß-carotene (ER = 0.664 ± 0.075). Inhibition of indinavir efflux will lead to increased transport and therefore a potentially higher bioavailability. Statistically significant (p < 0.05) promotion of indinavir efflux as indicated by increased ER values was obtained for C. limonum crude extract (ER = 5.551 ± 0.575) and hesperidin (ER = 3.385 ± 0.477), which potentially may lead to lower bioavalability. B. vulgaris crude extract (p = 0.8452), betaine monohydrate (p = 0.9982), A. sativum crude extract (p = 0.7161) and eriocitrin (p = 0.4431) displayed no statistically significant effect compared to the negative control group on indinavir transport across excised porcine intestinal tissue. The results from this study demonstrate that L-alliin, diallyl disulphide and ß-carotene have an inhibitory effect on indinavir efflux, which may significantly increase indinavir plasma levels after oral administration. C. limonum crude extract and hesperidin promote indinavir efflux, which may significantly reduce indinavir plasma levels. These pharmacokinetic interactions between certain drugs and plant extracts may negatively affect the anti-retroviral treatment of HIV patients, but deliberate and controlled inclusion of L-alliin, diallyl disulphide and ß-carotene in dosage forms may possibly cause more effective delivery of protease inhibitors after oral administration resulting in less frequent dosing intervals. / Thesis (MSc (Pharmaceutics))--North-West University, Potchefstroom Campus, 2013.