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1.
Afr Health Sci ; 24(1): 91-93, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38962355

RESUMO

This case report describes a pregnant patient with recent diagnosis of Human Immuno-Deficiency Virus (HIV) infection initiated on Anti-Retroviral Therapy (ART) in the second trimester, as well as high dose acyclovir high for large infected genital warts. She had no other HIV related opportunistic infections, and no prior anti tuberculosis treatment or preventive medication. Despite little response to acyclovir, patient was continuing on acyclovir for over 4 months. She subsequently developed recurrent anemia requiring frequent transfusion (14 units in total) over a 6-week period. On stopping acyclovir, the anemia subsided, a few weeks later she had a normal delivery, followed by surgical removal of the warts. At a follow-up 8 months later, she was well, with a healthy baby, and reported no other episodes of blood transfusion.


Assuntos
Aciclovir , Anemia , Antivirais , Infecções por HIV , Complicações Infecciosas na Gravidez , Recidiva , Humanos , Feminino , Gravidez , Aciclovir/uso terapêutico , Aciclovir/efeitos adversos , Aciclovir/administração & dosagem , Infecções por HIV/tratamento farmacológico , Infecções por HIV/complicações , Complicações Infecciosas na Gravidez/tratamento farmacológico , Antivirais/efeitos adversos , Antivirais/uso terapêutico , Adulto , Uganda , Resultado do Tratamento , Herpes Genital/tratamento farmacológico , Transfusão de Sangue
2.
Vaccine ; 39(8): 1265-1271, 2021 02 22.
Artigo em Inglês | MEDLINE | ID: mdl-33516601

RESUMO

BACKGROUND: Co-infection with hepatitis B virus (HBV) and human immunodeficiency virus (HIV) is common in sub-Saharan Africa (SSA) and can rapidly progress to cirrhosis and hepatocellular carcinoma. Recent data demonstrate ongoing HBV transmission among HIV-infected adults in SSA, suggesting that complications of HIV/HBV co-infection could be prevented with HBV vaccination. Because HBV vaccine efficacy is poorly understood among HIV-infected persons in SSA, we sought to characterize the humoral response to the HBV vaccine in HIV-seropositive Ugandan adults. METHODS: We enrolled HIV-infected adults in Kampala, Uganda without serologic evidence of prior HBV infection. Three HBV vaccine doses were administered at 0, 1 and 6 months. Anti-HBs levels were measured 4 weeks after the third vaccine dose. "Response" to vaccination was defined as anti-HBs levels ≥ 10 IU/L and "high response" as ≥ 100 IU/L. Regression analysis was used to determine predictors of response. RESULTS: Of 251 HIV-positive adults screened, 132 (53%) had no prior HBV infection or immunity and were enrolled. Most participants were women [89 (67%)]; median (IQR) age was 32 years (27-41), and 68 (52%) had received antiretroviral therapy (ART) for > 3 months. Median (IQR) CD4 count was 426 (261-583), and 64 (94%) of the 68 receiving ART had undetectable plasma HIV RNA. Overall, 117 (92%) participants seroconverted to the vaccine (anti-HBs ≥ 10 IU/L), with 109 (86%) participants having high-level response (anti-HBs ≥ 100 IU/L). In multivariate analysis, only baseline CD4 > 200 cells/mm3 was associated with response [OR = 6.97 (1.34-34.71), p = 0.02] and high-level response [OR = 4.25 (1.15-15.69)], p = 0.03]. CONCLUSION: HBV vaccination was effective in eliciting a protective humoral response, particularly among those with higher CD4 counts. Half of the screened patients did not have immunity to HBV infection, suggesting a large at-risk population for HBV infection among HIV-positive adults in Uganda. Our findings support including HBV vaccination as part of routine care among HIV-positive adults.


Assuntos
Infecções por HIV , Vacinas contra Hepatite B/imunologia , Hepatite B , Imunidade Humoral , Adulto , Feminino , Infecções por HIV/complicações , Hepatite B/complicações , Hepatite B/prevenção & controle , Anticorpos Anti-Hepatite B , Humanos , Masculino , Uganda
3.
East Afr Med J ; 98(3): 3599-3607, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36440467

RESUMO

Objective: This study aimed to translate, determine the comprehensibility and examine the linguistic equivalence of a Luganda Oral Mucositis Daily Questionnaire (OMDQ MTS) among patients undergoing chemotherapy. Design: This was a validation study design in which bilingual patients who were receiving chemotherapy at Uganda cancer institute and had experienced some sort of oral discomfort after the start of their treatment were asked to complete OMDQ MTS Luganda followed by the English version on the same visit. The tools were administered at least two hours apart and had different item order. Results and Conclusions: Fifty participants accepted to take part by completing both versions of OMDQ MTS data. All item mean score differences between the two versions were less than ±0.25. The Cronbach's α for the Luganda and English versions were 0.78 and 0.86 based on standardized items while Guttman's lambada 2 and 3 were 0.89 and 0.79 respectively. A translated Luganda version of OMDQ MTS is reliable and easy to understand. Thus, it has the potential in being used to monitor mucositis among patients undergoing chemotherapy.

4.
Ann Glob Health ; 84(1): 91-99, 2018 04 30.
Artigo em Inglês | MEDLINE | ID: mdl-30873807

RESUMO

OBJECTIVE: We set out to assess inequalities to access health professional education, and the impact of an education improvement program supported by MEPI (Medical Education Partnership Initiative). Inequalities in the higher education system in sub-Saharan Africa remain despite some transformative policies and affirmative action. METHODS: We reviewed enrollment data from four universities for the period 2001-2014 for various health professional training programs, and conducted group discussions through an iterative process with selected stakeholders, and including a group of education experts. Two time periods, 2001-2010 and 2011-2014, were considered. In 2010-11, the MEPI education program began. Gender ratios, regional representation, secondary schools, and the number of admissions by university and year were analysed. We used SPSS version 17 software to analyse these data with level of significance p < 0.05. We collated qualitative data along predetermined and emerging themes. RESULTS: The overall male-to-female ratio among the student population was 2.3:1. In total, there were 7,023 admissions, 4,403 between 2001-2010 (440 per annum) and 2,620 between 2011-2014 (655 per annum) with p = 0.018. There were no significant increases in admissions in the central and western regions over the two time periods, 1,708 to 849 and 1,113 to 867 respectively, both p = 0.713 and p = 0.253. We propose improving the university admission criteria and increasing enrollment to health professions training schools. CONCLUSION: There were significant inequalities for higher education training in Uganda by gender, regional representation and school attended. Modifying the admission criteria and increasing enrollment may reduce these inequalities.


Assuntos
Educação Médica/organização & administração , Ocupações em Saúde/educação , Faculdades de Medicina , África Subsaariana , Testes de Aptidão , Educação/métodos , Educação/normas , Feminino , Humanos , Masculino , Melhoria de Qualidade , Faculdades de Medicina/normas , Faculdades de Medicina/estatística & dados numéricos , Fatores Sexuais , Fatores Socioeconômicos
5.
Clin Genet ; 92(5): 487-494, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28105631

RESUMO

INTRODUCTION: Genetic variation may play explain some of the disparity in prevalence and control of hypertension across Sub-Saharan Africa. However, there have been very few studies to characterize genetic variation of blood pressure traits. AIM: To determine whether a set of blood pressure-associated genetic loci can be replicated among samples East African samples. METHODS: Twenty-seven blood pressures (BP)-related single nucleotide polymorphisms (SNPs) were genotyped among 2881 samples from participants in the Medical Education Partnership Initiative for Cardiovascular Disease (MEPI-CVD) survey. Associations with known BP variants were evaluated for systolic blood pressure (SBP), diastolic blood pressure (DBP) and pulse pressure (PP) as continuous variables and for hypertension (HTN) as a binary variable. RESULTS: Eleven SNPS were associated with at least 1 BP trait (P < .05). Four SNPs; rs2004776, rs7726475, rs11837544 and rs2681492, whose nearest genes are AGT, NPR3/SUB1, PLXNC1 and ATP2B1, respectively, were associated with SBP. Six SNPs, rs2004776, rs11977526, rs11191548, rs381815, rs2681492 and rs1327235, close to AGT, IGFBP3, CYP17A1, PLEKHA7, ATP2B1 and JAG, respectively, were associated with DBP while 2 SNPs located within AGT and IGFBP-3 genes associated with HTN. For PP, 4 variants rs1458038, rs11725861, rs7726475 and rs11953630 whose corresponding genes are FGF5, CHIC2, SUB1/NPR3 and EBF1 reached significance (P < .05). Eight SNPs were replicated in the same effect direction as the parent studies. Risk scores defined using published effect sizes were significantly associated with both SBP (P = .0026) and DBP (P = .0214). CONCLUSION: The replication of multiple BP variants among East Africans suggests that these variants may have universal effects across ethnic populations.


Assuntos
População Negra/genética , Pressão Sanguínea/genética , Variação Genética , Estudo de Associação Genômica Ampla , Característica Quantitativa Herdável , Adulto , África Oriental , Doenças Cardiovasculares/genética , Doenças Cardiovasculares/fisiopatologia , Demografia , Feminino , Humanos , Masculino , Polimorfismo de Nucleotídeo Único/genética
6.
Int J Tuberc Lung Dis ; 19(8): 927-35, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26162359

RESUMO

SETTING: Public human immunodeficiency virus (HIV) clinic and tuberculosis (TB) clinics in Kampala, Uganda. OBJECTIVE: To examine TB-specific CD4 T-cell single and polyfunctional cytokine correlates of clinical diagnostic tests for latent tuberculous infection (LTBI) in HIV-1-infected subjects. DESIGN: Thirty antiretroviral therapy-naïve HIV-1-infected adults without active TB disease underwent clinical tuberculin skin test (TST), interferon-gamma release assay (IGRA), and in vitro flow cytometry analysis on cells stimulated with purified protein derivative (PPD) and TB antigens early secreted antigenic target 6 + culture filtrate protein 10 (EC) for frequencies of interleukin (IL) 2, IL-17, interferon-gamma (IFN-γ) and tumor necrosis factor alpha (TNF-α) expressing cells. RESULTS: PPD-specific CD4 T-cell expression of TNF-α and IFN-γ was higher in the TST-positive than in the TST-negative group. EC-specific CD4 T-cell expression of TNF-α and IL-2 was higher in the TST+ group than in the TST- group. Expression of both PPD and EC-specific expression of IL-2, IFN-γ and TNF-α were greater in IGRA-positive than in IGRA-negative subjects. The TST+ group exhibited greater polyfunctionality than the TST- group. All cytokine combinations that contained TNF-α correlated strongly with TST size. CONCLUSION: While IL-2, IFN-γ and TNF-α correlate with clinical tests of LTBI, TNF-α is the dominant cytokine correlating with both TST size and magnitude of IGRA response.


Assuntos
Linfócitos T CD4-Positivos/imunologia , Citocinas/imunologia , Infecções por HIV/complicações , Tuberculose Latente/diagnóstico , Adulto , Feminino , Citometria de Fluxo/métodos , HIV-1/isolamento & purificação , Humanos , Testes de Liberação de Interferon-gama/métodos , Tuberculose Latente/imunologia , Masculino , Tuberculina/imunologia , Teste Tuberculínico/métodos , Uganda
7.
Clin Microbiol Infect ; 20(4): O230-8, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24205913

RESUMO

New diagnostics and vaccines for tuberculosis (TB) are urgently needed, but require an understanding of the requirements for protection from/susceptibility to TB. Previous studies have used unbiased approaches to determine gene signatures in single-site populations. The present study utilized a targeted approach, reverse transcriptase multiplex ligation-dependent probe amplification (RT-MLPA), to validate these genes in a multisite study. We analysed ex vivo whole blood RNA from a total of 523 participants across four sub-Saharan countries (Ethiopia, Malawi, South Africa, and The Gambia) with differences in TB and human immunodeficiency virus (HIV) status. We found a number of genes that were expressed at significantly lower levels in participants with active disease than in those with latent TB infection (LTBI), with restoration following successful TB treatment. The most consistent classifier of active disease was FCGR1A (high-affinity IgG Fc receptor 1 (CD64)), which was the only marker expressed at significantly higher levels in participants with active TB than in those with LTBI before treatment regardless of HIV status or genetic background. This is the first study to identify a biomarker for TB that is not affected by HIV status or geo-genetic differences. These data provide valuable clues for understanding TB pathogenesis, and also provide a proof-of-concept for the use of RT-MLPA in rapid and inexpensive validation of unbiased gene expression findings.


Assuntos
Biomarcadores/sangue , Expressão Gênica , Receptores de IgG/sangue , Tuberculose/diagnóstico , Adolescente , Adulto , África Subsaariana , Sangue , Etnicidade , Feminino , Perfilação da Expressão Gênica , Infecções por HIV/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
8.
J Infect Dis ; 209(6): 887-97, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24179111

RESUMO

BACKGROUND: In Uganda, the tuberculosis vaccine BCG is administered on the first day of life. Infants delivered at home receive BCG vaccine at their first healthcare facility visit at 6 weeks of age. Our aim was to determine the effect of this delay in BCG vaccination on the induced immune response. METHODS: We assessed CD4(+) and CD8(+) T-cell responses with a 12-hour whole-blood intracellular cytokine/cytotoxic marker assay, and with a 6-day proliferation assay. RESULTS: We enrolled 92 infants: 50 had received BCG vaccine at birth and 42 at 6 weeks of age. Birth vaccination was associated with (1) greater induction of CD4(+) and CD8(+) T cells expressing either interferon γ (IFN-γ) alone or IFN-γ together with perforin and (2) induction of proliferating cells that had greater capacity to produce IFN-γ, tumor necrosis factor α (TNF-α), and interleukin 2 together, compared with delayed vaccination. CONCLUSIONS: Distinct patterns of T-cell induction occurred when BCG vaccine was given at birth and at 6 weeks of age. We propose that this diversity might impact protection against tuberculosis. Our results differ from those of studies of delayed BCG vaccination in South Africa and the Gambia, suggesting that geographical and population heterogeneity may affect the BCG vaccine-induced T-cell response.


Assuntos
Vacina BCG/administração & dosagem , Vacina BCG/imunologia , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD8-Positivos/imunologia , Estudos Transversais , Citocinas/sangue , Feminino , Humanos , Esquemas de Imunização , Memória Imunológica/imunologia , Lactente , Recém-Nascido , Masculino , Uganda
9.
Int J Tuberc Lung Dis ; 17(3): 336-41, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23407223

RESUMO

SETTING: A human immunodeficiency virus (HIV) clinic in a setting of high tuberculosis (TB) and HIV prevalence. OBJECTIVE: To study the incidence of and factors associated with tuberculin skin test (TST) conversion in HIV patients on antiretroviral therapy (ART). DESIGN: Prospective cohort study of TST-negative, ART-naïve HIV patients (CD4 cell count < 250 cells/l) without active TB. TST was repeated at 2 months and, if negative, at 6 months. TST positivity was defined as an induration of ≥5 mm. Clinical examination, chest X-ray and CD4 cell counts were performed at baseline and follow-up. Proportions and incidence of TST conversion were calculated, and logistic regression analyses were performed. RESULTS: Of the 142 patients, 105 (75.5%) were females. The mean age was 35.9 years (standard deviation 8.1) and the median CD4 cell count was 119 cells/l (interquartile range 42168). The incidence of TST conversion was 30.2/100 person years (95%CI 19.546.8). Conversion was not associated with clinical, CD4 cell count or chest radiography findings. CONCLUSIONS: A high incidence of TST conversion was observed, supporting the World Health Organization recommendation to provide isoniazid preventive therapy (IPT) to all HIV patients in high TB prevalence settings. If case-control programmes choose to provide IPT only to TST-positive patients, repeat TST should be considered following initiation of ART.


Assuntos
Antirretrovirais/uso terapêutico , Coinfecção , Infecções por HIV/tratamento farmacológico , Teste Tuberculínico , Tuberculose/diagnóstico , Adulto , Contagem de Linfócito CD4 , Feminino , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Humanos , Incidência , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prevalência , Estudos Prospectivos , Radiografia Torácica , Fatores de Tempo , Tuberculose/epidemiologia , Uganda/epidemiologia
10.
Int J Tuberc Lung Dis ; 17(3): 361-7, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23407224

RESUMO

OBJECTIVE: To determine the proportion of recurrent tuberculosis (TB) due to relapse with the patient's initial strain or reinfection with a new strain of Mycobacterium tuberculosis 1-2 years after anti-tuberculosis treatment in Uganda, a sub-Saharan TB-endemic country. DESIGN: Records of patients with culture-confirmed TB who completed treatment at an urban Ugandan clinic were reviewed. Restriction fragment length polymorphism (RFLP) patterns were used to determine relapse or reinfection. Associations between human immunodeficiency virus (HIV) positivity and type of TB recurrence were determined. RESULTS: Of 1701 patients cured of their initial TB episode with a median follow-up of 1.24 years, 171 (10%) had TB recurrence (8.4 per 100 person-years). Rate and risk factors for recurrence were similar to other studies from sub-Saharan Africa. Insertion sequence (IS) 6110-based RFLP of paired isolates from 98 recurrences identified 80 relapses and 18 reinfections. Relapses among HIV-positive and -negative patients were respectively 79% and 85% of recurrences. CONCLUSIONS: Relapse was more common and presented earlier than reinfection in both HIV-positive and -negative TB patients 1-2 years after completing treatment. These findings impact both the choice of retreatment drug regimen, as relapsing patients are at higher risk for acquired drug resistance, and clinical trials of new TB regimens with relapse as clinical endpoint.


Assuntos
Antituberculosos/uso terapêutico , Doenças Endêmicas , Mycobacterium tuberculosis/patogenicidade , Rifampina/uso terapêutico , Tuberculose Pulmonar/tratamento farmacológico , Saúde da População Urbana , Adulto , Análise do Polimorfismo de Comprimento de Fragmentos Amplificados , Coinfecção , Feminino , Genótipo , Infecções por HIV/epidemiologia , Humanos , Incidência , Estimativa de Kaplan-Meier , Masculino , Análise Multivariada , Mycobacterium tuberculosis/genética , Fenótipo , Polimorfismo de Fragmento de Restrição , Modelos de Riscos Proporcionais , Recidiva , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Escarro/microbiologia , Fatores de Tempo , Resultado do Tratamento , Tuberculose Pulmonar/diagnóstico , Tuberculose Pulmonar/epidemiologia , Tuberculose Pulmonar/microbiologia , Uganda/epidemiologia
11.
Afr Health Sci ; 12(2): 226-30, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23056032

RESUMO

In many resource-limited settings, cryptococcal meningitis (CM) contributes up to 20% of all deaths with further complications due to Immune Reconstitution Inflammatory Syndrome (IRIS). We present a case report on a patient who developed CM-IRIS and then subsequent CM-relapse with a fluconazole-resistant organism and then later CM-IRIS once again, manifesting as cystic cryptococcomas, hydrocephalus, and sterile CSF. In this case we, demonstrate that CM-IRIS and persistent low level cryptococcal infection are not mutually exclusive phenomena. The management of IRIS with corticosteroids may increase the risk of culture positive CM-relapse which may further increase the risk of recurrent IRIS and resulting complications including death. We also highlight the role of imaging and fluconazole resistance testing in patients with recurrent meningitis and the importance of CSF cultures in guiding treatment decisions.


Assuntos
Infecções Oportunistas Relacionadas com a AIDS/diagnóstico , Cryptococcus neoformans/isolamento & purificação , Infecções por HIV/complicações , Síndrome Inflamatória da Reconstituição Imune/diagnóstico , Meningite Criptocócica/diagnóstico , Infecções Oportunistas Relacionadas com a AIDS/complicações , Infecções Oportunistas Relacionadas com a AIDS/tratamento farmacológico , Adulto , Anfotericina B/uso terapêutico , Fármacos Anti-HIV/uso terapêutico , Antifúngicos/uso terapêutico , Gerenciamento Clínico , Evolução Fatal , Fluconazol/uso terapêutico , Infecções por HIV/diagnóstico , Infecções por HIV/tratamento farmacológico , Recursos em Saúde , Humanos , Síndrome Inflamatória da Reconstituição Imune/complicações , Síndrome Inflamatória da Reconstituição Imune/tratamento farmacológico , Masculino , Meningite Criptocócica/líquido cefalorraquidiano , Meningite Criptocócica/complicações , Meningite Criptocócica/tratamento farmacológico , Recidiva , Uganda
12.
Int J Tuberc Lung Dis ; 16(11): 1517-21, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23044447

RESUMO

OBJECTIVE: To examine whether hypovitaminosis D is a risk factor for the development of tuberculosis (TB) associated immune reconstitution inflammatory syndrome (IRIS). METHODS: We measured serum 25-hydroxyvitamin D (25D) concentrations in four groups of patients at Mulago Hospital, Kampala, Uganda: 1) patients co-infected with TB and the human immunodeficiency virus (HIV) receiving anti-tuberculosis treatment (HIV+TB+; n = 92) who did and did not develop TB-IRIS after starting antiretroviral treatment (ART), 2) HIV-infected patients without TB (HIV+TB-; n = 20) starting ART, 3) non-HIV-infected individuals with TB (HIV-TB+; n = 27), and 4) those without TB (HIV-TB-; n = 23). RESULTS: The prevalence of optimal 25D levels (>75 nmol/l) was as follows: 59% in HIV+TB+, 65% in HIV+TB-, 63% in HIV-TB+ and 35% in HIV-TB- patients. 25D concentrations decreased during the first 3 months of ART in HIV+TB+ individuals who developed IRIS (P = 0.005) and those who did not (P = 0.002), and in HIV+TB- individuals (P = 0.015); however, 25D concentration in patients who did or did not develop TB-IRIS did not differ. CONCLUSION: The prevalence of optimal vitamin D status was relatively high in HIV-infected patients with and without TB living near the equator. No difference in 25D concentrations was observed between TB-IRIS and non-IRIS. However, 25D concentrations decreased during ART.


Assuntos
Infecções por HIV/complicações , Síndrome Inflamatória da Reconstituição Imune/etiologia , Tuberculose/complicações , Deficiência de Vitamina D/complicações , Adulto , Fármacos Anti-HIV/uso terapêutico , Antituberculosos/uso terapêutico , Feminino , Seguimentos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Humanos , Síndrome Inflamatória da Reconstituição Imune/epidemiologia , Masculino , Prevalência , Estudos Prospectivos , Fatores de Risco , Tuberculose/tratamento farmacológico , Tuberculose/epidemiologia , Uganda/epidemiologia , Vitamina D/análogos & derivados , Vitamina D/sangue , Deficiência de Vitamina D/epidemiologia , Adulto Jovem
13.
Int J Tuberc Lung Dis ; 16(4): 480-5, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22640513

RESUMO

SETTING: Clinical trials can provide a high standard of patient care and contribute to scientific knowledge; however, only a fraction of the patients screened participate and receive treatment as part of a trial. OBJECTIVE: To explore reasons why patients were not enrolled in an international tuberculosis (TB) treatment trial and to compare experiences among study sites. DESIGN: An analysis of reasons why patients were not enrolled was conducted among patients screened for a TB clinical trial at 26 sites in North and South America, Africa, and Europe. RESULTS: Staff at study sites screened 1119 potential candidates for the trial: 61% (n = 686) were not enrolled due to 1) failure to meet eligibility criteria (n = 405, 59%), 2) site's decision (n = 168, 24%), or 3) candidate's choice (n = 113, 16%). Study staff recorded a total of 144 reasons for why they believed patients chose not to participate, including concerns over research (28%), conflicts with work or school (21%), and lifestyle and family issues (20%). Socio-demographic and geographic factors also influenced participation. CONCLUSION: Increased evaluation of screening outcomes and of specific interventions, such as improved education and communication about trial procedures, may increase the efficiency of screening and enrollment in clinical trials.


Assuntos
Antituberculosos/uso terapêutico , Seleção de Pacientes , Recusa de Participação/psicologia , Tuberculose/tratamento farmacológico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Recusa de Participação/estatística & dados numéricos , Adulto Jovem
14.
Afr Health Sci ; 12(3): 268-75, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23382739

RESUMO

BACKGROUND: We determined the prevalence and factors associated with hyperlactatemia among HIV patients admitted on the emergency ward of a national hospital in Uganda. OBJECTIVE: We were specifically interested in knowing whether there was an association between clinically significant hyperlactatemia and concurrent antiretroviral therapy (ART) use. METHODS: A cross sectional descriptive study enrolled 303 HIV infected patients at a national referral hospital between March and April 2008. We consecutively recruited all eligible HIV infected patients above 18 years admitted on the emergency ward. Data were collected on socio-demographic, clinical and laboratory characteristics. Lactate levels were measured using the Accutrend® portable lactate analyser. Data analysis was performed using Stata 10.0; P-value of < 0.05 was considered to be significant. RESULTS: Three hundred and three HIV infected patients were recruited. Prevalence of hyperlactatemia (lactate ≥2.5mmol/L) was 252 (83.2%). Clinically significant hyperlactatemia (lactate ≥4mmol/L) was present in 105/303(34.6%) patients. There was no association between use of ART and clinically significant hyperlactatemia. In the multivariate analysis, body weakness 1.91 (1.09-3.35), skin rash 3.18 (1.11-9.10) and tachypnoea 1.04 (1.01-1.07) were independently associated with clinically significant hyperlactatemia. CONCLUSION: There was a high prevalence of clinically significant hyperlactatemia among HIV infected patients but it was not associated with concurrent antiretroviral use.


Assuntos
Acidose Láctica/epidemiologia , Fármacos Anti-HIV/uso terapêutico , Infecções por HIV/complicações , Ácido Láctico/sangue , Acidose Láctica/sangue , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Fármacos Anti-HIV/efeitos adversos , Estudos Transversais , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Prevalência , Encaminhamento e Consulta , Fatores de Risco , Fatores Socioeconômicos , Uganda/epidemiologia , Adulto Jovem
15.
Afr Health Sci ; 11 Suppl 1: S105-11, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22135634

RESUMO

INTRODUCTION: Early identification of Tuberculosis (TB) treatment failure using cost effective means is urgently needed in developing nations. The study set out to describe affordable predictors of TB treatment failure in an African setting. OBJECTIVE: To determine the predictors of treatment failure among patients with sputum smear positive pulmonary TB at Mulago hospital. The study was carried out in the TB clinic of Mulago hospital Kampala, Uganda. This was an unmatched case control study where fifty patients with a diagnosis of TB treatment failure (cases) and 100 patients declared cured after completing anti TB treatment (controls) were recruited into the study. Cases were compared with controls to determine predictors of treatment failure. RESULTS: Significant predictors of treatment failure in this study included a positive sputum smear at 2 months of TB treatment (OR 20.63, 95%CI 5.42- 78.41) and poor adherence to anti TB treatment (OR 14.59, 95%CI 3.04-70.15). CONCLUSION: This study identified a treatment related and a simple laboratory predictor of TB treatment failure in Mulago hospital which may be used in resource limited settings for early recognition of those at risk and early intervention.


Assuntos
Hospitais Comunitários , Pacientes , Tuberculose Pulmonar/tratamento farmacológico , Adulto , Antituberculosos/uso terapêutico , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Auditoria Médica , Valor Preditivo dos Testes , Estudos Retrospectivos , Falha de Tratamento , Uganda
16.
J Infect Dis ; 204(6): 884-92, 2011 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-21849285

RESUMO

BACKGROUND: Optimal treatment of human immunodeficiency virus (HIV)-associated tuberculosis in patients with high CD4⁺ T-cell counts is unknown. Suppression of viral replication during therapy for tuberculosis may block effects of immune activation on T cells and slow HIV disease progression. METHODS: We conducted a randomized trial in 214 HIV-infected patients with active tuberculosis and CD4⁺ T-cell counts of ≥ 350 cells/µL to determine whether 6 months of antiretroviral therapy given during tuberculosis treatment would improve clinical outcomes. Subjects were randomized to receive 6 months of abacavir-lamivudine-zidovudine concurrent with tuberculosis therapy or delayed antiretroviral therapy. Endpoints were CD4⁺ T-cell counts of < 250 cells/µL, AIDS, or death. RESULTS: Intervention and comparison arms had similar median CD4⁺ counts (517 and 534 cells/µL, respectively) and HIV RNA levels (4.6 and 4.7 log10 copies/µL, respectively). Viral suppression was achieved in 86% of patients allocated to intervention. Seventeen subjects (15.6%) in the intervention arm developed study outcome compared to 25 subjects (22.8%) in the comparison arm (P = .17). Grade 3 or 4 adverse events were less frequent in the intervention arm. By 2 months, 90% of subjects in both arms were culture-negative for tuberculosis. CONCLUSIONS: Short-term antiretroviral therapy during tuberculosis treatment in patients with CD4⁺T-cell counts of >350 cells/µL was safe and associated with clinical benefits.


Assuntos
Fármacos Anti-HIV/administração & dosagem , Terapia Antirretroviral de Alta Atividade/métodos , Antituberculosos/administração & dosagem , Linfócitos T CD4-Positivos/imunologia , Infecções por HIV/tratamento farmacológico , Tuberculose Pulmonar/tratamento farmacológico , Adolescente , Adulto , Fármacos Anti-HIV/efeitos adversos , Terapia Antirretroviral de Alta Atividade/efeitos adversos , Antituberculosos/efeitos adversos , Contagem de Linfócito CD4 , Didesoxinucleosídeos/administração & dosagem , Feminino , Infecções por HIV/complicações , Infecções por HIV/mortalidade , Humanos , Lamivudina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Análise de Sobrevida , Resultado do Tratamento , Tuberculose Pulmonar/complicações , Tuberculose Pulmonar/mortalidade , Uganda , Adulto Jovem , Zidovudina/administração & dosagem
17.
Afr Health Sci ; 11(2): 182-9, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21857848

RESUMO

BACKGROUND: Urinary tract infections (UTIs) in women are a common problem in primary health care settings. Resistance of bacterial uropathogens to commonly used antibiotics is common in many places. OBJECTIVES: To determine the prevalence of UTI, associated uropathogens and their antimicrobial susceptibility. METHODS: A cross section study carried out at Mulago hospital outpatients' department. Midstream urine samples (MSU) were collected from 399 women, who gave informed consent and fulfilled other study criteria. Quantitative culture method, identification of uropathogens and antibiotic susceptibility testing using the Kirby-Bauer disc diffusion technique were applied to the isolates. RESULTS: Out of 399 MSU samples, 40 pure significant bacterial growths (≥10(5) colony forming units (cfu)/ml of urine) were isolated and these included Escherichia coli, 23 (57.5%), Staphylococcus aureus, 9 (22.5%), Enterococci spp, 6 (15%) and Klebsiella pneumoniae, 2 (5.0%). Overall, sensitivities were: nitrofurantoin (98.3%), cefuroxime (89.3%), and cotrimoxazole (20%) by all uropathogens isolated. CONCLUSIONS: Culture positive UTI among adult non-pregnant women are a common problem, occurring in 10% of the study population. Most bacterial uropathogens showed high sensitivity to nitrofurantoin but low sensitivity to SXT. RECOMMENDATIONS: Nitrofurantoin should be considered as drug of choice for empirical treatment of community acquired uncomplicated UTI in adult non-pregnant women.


Assuntos
Bactérias/isolamento & purificação , Infecções Bacterianas/microbiologia , Bacteriúria/microbiologia , Adolescente , Adulto , Distribuição por Idade , Idoso , Antibacterianos/farmacologia , Antibacterianos/uso terapêutico , Bactérias/classificação , Bactérias/efeitos dos fármacos , Infecções Bacterianas/diagnóstico , Infecções Bacterianas/tratamento farmacológico , Infecções Bacterianas/epidemiologia , Bacteriúria/diagnóstico , Bacteriúria/tratamento farmacológico , Bacteriúria/epidemiologia , Estudos Transversais , Feminino , Hospitais de Ensino , Humanos , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Prevalência , Uganda/epidemiologia , Adulto Jovem
18.
Int J STD AIDS ; 22(6): 310-4, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21680665

RESUMO

We evaluated the accuracy of heat-denatured, amplification-boosted ultrasensitive p24 assay (Up24) compared with reverse transcriptase polymerase chain reaction (RT-PCR). We tested 394 samples from Ugandans infected with HIV-1 non-B subtypes. We compared Up24 levels (HIV-1 p24 Core Profile enzyme-linked immunosorbent assay (ELISA), NEN Life Science Products) to RNA viral loads (Amplicor HIV-1 Monitor 1.5, Roche) by linear regression, and calculated sensitivity, specificity, positive and negative predictive values. Median viral load was 4.9 log10 copies/mL (interquartile range [IQR], 2.6-5.5); 114 samples (29%) were undetectable (<400 copies/mL). Sensitivity of the Up24 assay to detect viral load ≥400 copies/mL was 69%, specificity was 67%, and positive and negative predictive values were 84% and 47%, respectively. Sensitivity of Up24 was 90%, 80%, 68%, 62% and 45% to detect viral loads of >500,000, 250,000-500,000, 100,000-250,000, 50,000-100,000 and 400-50,000 copies/mL, respectively. In conclusion, when compared with RT-PCR for patients infected with non-B subtypes, the Up24 demonstrated limited sensitivity especially at low viral loads. Moreover, the Up24 was positive in 33% of samples deemed undetectable by RT-PCR, which may limit the use of the Up24 to detect viral suppression.


Assuntos
Proteína do Núcleo p24 do HIV/análise , Infecções por HIV/diagnóstico , Adulto , Países em Desenvolvimento , Ensaio de Imunoadsorção Enzimática/métodos , Infecções por HIV/sangue , Infecções por HIV/imunologia , HIV-1/isolamento & purificação , Humanos , Modelos Lineares , Desnaturação Proteica , Reação em Cadeia da Polimerase Via Transcriptase Reversa/métodos , Sensibilidade e Especificidade , Uganda , Carga Viral/economia , Carga Viral/métodos
19.
Tuberculosis (Edinb) ; 91(3): 224-30, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21459675

RESUMO

Pleural tuberculosis (TB) is a common presentation of Mycobacterium tuberculosis (MTB) infection, and despite spontaneous resolution remains a strong risk factor for reactivation pulmonary TB in a majority of individuals. This study was undertaken to further understand the characteristics of immune cells at sites of pleural TB. A significant shift toward memory CD4+ T cells with an effector phenotype and away from naïve CD4+ T cells in pleural fluid as compared to blood mononuclear cells was found. These data suggest that effector T cells are capable of migrating to sites of active TB infection and/or the differentiation to effector phenotype T cells in situ is highly amplified. Using multi-parameter flow cytometry analysis, a significant portion of MTB-specific CD4+ T cells in the pleural space were polyfunctional demonstrating two, three or four simultaneous functions including IFN-gamma, IL-2, TNF-alpha, and or MIP-1 alpha production. A greater proportion of these polyfunctional cells were of effector memory rather than central memory phenotype. The role of these polyfunctional MTB-specific CD4+ T cells at sites of pleural TB requires further study.


Assuntos
Linfócitos T CD4-Positivos/imunologia , Mycobacterium tuberculosis/imunologia , Tuberculose Pleural/imunologia , Adolescente , Adulto , Idoso , Linfócitos T CD4-Positivos/metabolismo , Quimiocina CCL3/biossíntese , Feminino , Citometria de Fluxo , Humanos , Interferon gama/biossíntese , Interleucina-2/biossíntese , Masculino , Pessoa de Meia-Idade , Marrocos/epidemiologia , Mycobacterium tuberculosis/citologia , Fenótipo , Tuberculose Pleural/epidemiologia , Tuberculose Pleural/genética , Fator de Necrose Tumoral alfa/biossíntese , Uganda/epidemiologia , Adulto Jovem
20.
Clin Exp Immunol ; 163(3): 333-8, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-21303360

RESUMO

Pleural tuberculosis (TB) remains a common presentation of Mycobacterium tuberculosis (MTB) infection in HIV/TB dually infected subjects, and both cellular and acellular components of the pleural milieu promote HIV-1 replication; however, they remain uncharacterized. Using cytokine array of pleural fluid and real-time reverse transcription-polymerase chain reaction (RT-PCR) and immunophenotype analysis, pleural fluid mononuclear cells (PFMC) were compared to systemic counterparts [i.e. plasma and peripheral blood mononuclear cells (PBMC)]. Significant increases in pleural fluid cytokines compared to plasma were limited to interleukin (IL)-6, IL-8, interferon (IFN)-γ and transforming growth factor (TGF)-ß, and did not include other T helper type 1 (Th1) (IL-2, IL-15), Th2 or Th17 cytokines. Patterns and levels of cytokines were indistinguishable between pleural fluid from HIV/TB and TB patients. Forkhead box P3 (FoxP3) mRNA in PFMC was increased significantly and correlated highly with levels of IL-6 and IL-8, less with TGF-ß, and not with IFN-γ. Among CD4 T cells, FoxP3-reactive CD25(hi) were increased in HIV/TB dually infected subjects compared to their PBMC, and up to 15% of FoxP3(+) CD25(hi) CD4 T cells were positive for IL-8 by intracellular staining. These data implicate a dominant effect of MTB infection (compared to HIV-1) at pleural sites of dual HIV/TB infection on the local infectious milieu, that include IL-6, IL-8, IFN-γ and TGF-ß and regulatory T cells (T(reg) ). A correlation in expansion of T(reg) with proinflammatory cytokines (IL-6 and IL-8) in pleural fluid was shown. T(reg) themselves may promote the inflammatory cytokine milieu through IL-8.


Assuntos
Citocinas/metabolismo , Infecções por HIV/complicações , Infecções por HIV/imunologia , Cavidade Pleural/imunologia , Linfócitos T Reguladores/imunologia , Tuberculose Pleural/complicações , Tuberculose Pleural/imunologia , Adulto , Citocinas/sangue , Feminino , Fatores de Transcrição Forkhead/genética , Proteínas de Fusão gag-pol/genética , Expressão Gênica/genética , Infecções por HIV/sangue , Infecções por HIV/metabolismo , HIV-1/isolamento & purificação , Humanos , Interferon gama/sangue , Interferon gama/metabolismo , Interleucina-6/sangue , Interleucina-6/metabolismo , Interleucina-8/sangue , Interleucina-8/metabolismo , Leucócitos Mononucleares/metabolismo , Masculino , Pessoa de Meia-Idade , Plasma/virologia , Cavidade Pleural/metabolismo , Cavidade Pleural/patologia , Cavidade Pleural/virologia , Derrame Pleural/imunologia , Derrame Pleural/metabolismo , Derrame Pleural/patologia , Derrame Pleural/virologia , Linfócitos T Reguladores/metabolismo , Fator de Crescimento Transformador beta/metabolismo , Tuberculose Pleural/sangue , Tuberculose Pleural/metabolismo , Carga Viral , Adulto Jovem
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