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1.
medRxiv ; 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38585806

RESUMO

Purpose: Innovative strategies are urgently needed to meet the World Health Organization's 2030 target of treating 90% of women with precancerous cervical lesions, especially in countries most affected by cervical cancer. We assessed the acceptability of self-administered intravaginal therapies for treating cervical precancer in women undergoing cervical cancer screening and precancer treatment in Kenya. Methods: We conducted a cross-sectional study among women aged 18 to 65 years undergoing cervical cancer screening or precancer treatment between January and October 2023 in Kisumu County, Kenya. Participants completed a questionnaire about their perceptions and perceived acceptability of self- or provider-administered topical therapies for cervical precancer treatment. Quantitative data were summarized using descriptive statistics. Results: A total of 379 questionnaires were completed. The median age of participants was 35 years (IQR 25-62), 62% had a primary education or less, and 71% earned $5 or less daily. All participants had been screened for cervical cancer, and 191 (51%) had received precancer treatment, primarily thermal ablation. Ninety-eight percent of participants were willing to use a self-administered intravaginal therapy for cervical precancer, if available. The majority, 91%, believed their male partner would support their use. Given a choice, 63% preferred self-admiration at home compared to provider-administration of a topical therapy in the clinic, citing time and cost savings. In multivariate analysis, married women were more likely to expect partner support for self-administration than single women. Participants preferred a therapy used less frequently but for a longer duration, compared to daily use therapy with a shorter duration of use. Conclusions: Self-administered intravaginal therapies for cervical precancer treatment are highly acceptable among women undergoing screening and precancer treatment in Kenya.

2.
medRxiv ; 2024 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-38370772

RESUMO

Background: Cervical cancer continues to be a major health issue in low- and middle-income countries (LMICs). Despite increasing access to screening, access to precancer treatment remains a significant challenge in LMICs, highlighting a need for innovative, accessible, and resource-appropriate treatment approaches, including self-administered therapies. Methods: A cross-sectional mixed-methods study was conducted among men aged 25-65 with a current female partner in Kisumu County, Kenya. Participants were sequentially recruited and surveyed to evaluate their understanding of HPV and cervical cancer, their views on screening and treatment, and their attitudes toward self-administered therapies. Focus group discussions with a subset of the survey participants further explored their treatment preferences and perceptions. Results: Two hundred fourteen men participated in the survey, and 39 men participated in focus group discussions. The median age was 39 years, and 51% had a primary school education or less. Most (96%) were in a committed relationship, and 74% earned $10 or less daily. There was strong support for self-administered topical therapies, with 98% willing to support their partners using such treatments if available. Additionally, most participants were open to supporting necessary abstinence or condom use, though 76% believed their partners might hesitate to request condom use. When given an option, most preferred their partner to self-administer such therapies at home compared to provider administration at a health facility, citing convenience, cost-effectiveness, and privacy. Preferences varied between two potential therapies, 5-Fluorouracil (5FU) and Artesunate, based on their administration frequency, duration, and abstinence requirements. Qualitative findings largely supported the quantitative analysis. Conclusions: The study demonstrates strong support for self-administered topical therapies for cervical precancer among Kenyan men. Additional research on acceptability, feasibility, and efficacy in different LMICs could pave the way for these therapies to help bridge current cervical precancer treatment gaps in these settings.

3.
JCO Glob Oncol ; 8: e2100388, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35772043

RESUMO

PURPOSE: There are limited data on treatment and outcomes for acute lymphoblastic leukemia (ALL) among adolescents and young adults in sub-Saharan Africa. We describe a prospective observational cohort in Malawi. METHODS: Patients age 15-39 years with newly diagnosed ALL at Kamuzu Central Hospital, Malawi, were enrolled from 2013 to 2019; follow-up was censored on December 2020. ALL diagnosis was confirmed on-site using immunohistochemistry and telepathology consultation involving pathologists in Malawi and the United States. All but four patients were treated with a modified pediatric-inspired regimen (Cancer and Leukemia Group B 10403 protocol). Key modifications included omission of asparaginase and no dose escalation for methotrexate. RESULTS: Of 19 participants, the median age was 22 (range 15-36) years. Of the 15 patients who initiated treatment, 11 (73%) achieved remission after induction, one (7%) died during induction, two (13%) had refractory disease, and one (7%) absconded. No patients were lost to follow-up. Eventually, 10 of 11 patients (91%) with confirmed remission relapsed. The median duration of first remission was 10 (range 3-22) months. Twelve of 15 treated patients (80%) had died at the time of censoring. Among treated patients, the 12- and 24-month overall survival was 50% (95% CI, 23 to 72) and 17% (95% CI, 3 to 42), respectively. CNS involvement was associated with worse survival. CONCLUSION: It is possible to treat adolescents and young adults with ALL in low-resource settings using a low-cost, pediatric-inspired regimen; however, outcomes are poor. Both cost and limitations in supportive care infrastructure limit intensive cytotoxic approaches such as asparaginase. Patient-reported outcomes are needed to understand the quality of life and cost-effectiveness. Critically, innovative, leap-frog therapies, such as monoclonal or bispecific antibodies, and feasible economic models for resource-limited settings are urgently needed.


Assuntos
Asparaginase , Leucemia-Linfoma Linfoblástico de Células Precursoras , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Humanos , Malaui/epidemiologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras/etiologia , Qualidade de Vida , Adulto Jovem
5.
JCO Glob Oncol ; 8: e2100315, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35175832

RESUMO

PURPOSE: Low health literacy is a leading cause of treatment abandonment among patients receiving cancer care at Kamuzu Central Hospital (KCH) in Malawi. METHODS: We developed cancer educational videos featuring Malawian providers and played them in the KCH oncology clinic. The videos addressed cancer-related topics, including disease biology, common myths, diagnostic procedures, treatment, side effects, and survivorship. After 6 months of implementation, we compared results from 50 pre- and postintervention surveys to assess change in cancer knowledge and care experience. RESULTS: Both pre- and postintervention cancer knowledge were good: a median of nine questions were answered correctly of 11 in both assessments. Despite the intervention, most continued to incorrectly identify cancer as an infection (pre: n = 26, 52%; post: n = 25, 50%; P = 1.0), although improvements were observed in patients' knowledge of correct actions for fever at home (pre: n = 38, 76%; post: n = 43, 86%; P = .31). Care experiences were overall good. Postintervention results indicate that more patients felt always listened to by their providers (pre: n = 18, 36%; post: n = 29, 58%; P < .01). However, we also noted a higher rate of patient dissatisfaction of care as more patients felt that they could not understand chemotherapy counseling (pre: n = 11, 22%; post: n = 22, 44%; P < .01). Assessments of video satisfaction indicate that patients found the videos very helpful in terms of understanding their disease (n = 47, 96%) and side effects (n = 48, 98%) and felt empowered to speak up with their providers (n = 46, 96%). CONCLUSION: Standardized education materials for patients that can be feasibly implemented throughout sub-Saharan Africa are urgently needed. Cancer educational videos are a low-cost way to educate and empower patients with cancer in resource-constrained settings although in-person discussions remain a crucial part of care.


Assuntos
Neoplasias , Participação do Paciente , Escolaridade , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Neoplasias/terapia , Inquéritos e Questionários
6.
Pediatr Blood Cancer ; 68(10): e29257, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34339099

RESUMO

BACKGROUND: Patient-reportedoutcomes (PROs) that assess health-related quality of life (HRQoL) are increasingly important components of cancer care and research that are infrequently used in sub-Saharan Africa (SSA). METHODS: We administered the Chichewa Pediatric Patient-Reported Outcome Measurement Information System Pediatric (PROMIS)-25 at diagnosis, active treatment, and follow-up among pediatric lymphoma patients in Lilongwe, Malawi. Mean scores were calculated for the six PROMIS-25 HRQoL domains (Mobility, Anxiety, Depressive Symptoms, Fatigue, Peer Relationships, Pain Interference). Differences in HRQoL throughout treatment were compared using the minimally important difference (MID) and an ANOVA analysis. Kaplan-Meier survival estimates and Cox hazard ratios for mortality are reported. RESULTS: Seventy-five children completed PROMIS-25 surveys at diagnosis, 35 (47%) during active treatment, and 24 (32%) at follow-up. The majority of patients died (n = 37, 49%) or were lost to follow-up (n = 6, 8%). Most (n = 51, 68%) were male, median age was 10 (interquartile range [IQR] 8-12), 48/73 (66%) presented with advanced stage III/IV, 61 (81%) were diagnosed with Burkitt lymphoma and 14 (19%) Hodgkin lymphoma. At diagnosis, HRQoL was poor across all domains, except for Peer Relationships. Improvements in HRQoL during active treatment and follow-up exceeded the MID. On exploratory analysis, fair-poor PROMIS Mobility <40 and severe Pain Intensity = 10 at diagnosis were associated with increased mortality risk and worse survival, but were not statistically significant. CONCLUSIONS: Pediatric lymphoma patients in Malawi present with poor HRQoL that improves throughout treatment and survivorship. Baseline PROMIS scores may provide important prognostic information. PROs offer an opportunity to include patient voices and prioritize holistic patient-centered care in low-resource settings.


Assuntos
Linfoma , Qualidade de Vida , Criança , Feminino , Seguimentos , Humanos , Linfoma/diagnóstico , Linfoma/epidemiologia , Linfoma/terapia , Malaui/epidemiologia , Masculino , Medidas de Resultados Relatados pelo Paciente
7.
Int Health ; 13(3): 297-304, 2021 04 27.
Artigo em Inglês | MEDLINE | ID: mdl-33037426

RESUMO

BACKGROUND: Cancer outcomes in sub-Saharan Africa (SSA) remain suboptimal, in part due to poor patient retention. Many patients travel long distances to receive care, and transportation costs are often prohibitively expensive. These are well-known and established causes of delayed treatment and care abandonment in Malawi and across SSA. METHODS: We sent visit reminder texts and offered upfront money to cover transportation costs through a mobile money transfer (MMT) platform to lymphoma patients enrolled in a prospective cohort in Malawi. The primary aim was to test the feasibility of upfront MMTs. RESULTS: We sent 1034 visit reminder texts to 189 participating patients. Of these texts, 614 (59%) were successfully delivered, with 536 (52%) responses. 320/536 (60%) MMTs were sent to interested patients and 312/320 (98%) came to their appointment on time. Of 189 total patients, 120 (63%) were reached via text and 84 (44%) received MMTs a median of three times (IQR 2-5). Median age of reachable patients was 41 (IQR 30-50), 75 (63%) were male, 62 (52%) were HIV+ and 79 (66%) resided outside of Lilongwe. CONCLUSION: MMTs were a feasible way to cover upfront transportation costs for patients reachable via text, however many of our patients were unreachable. Future studies exploring barriers to care, particularly among unreachable patients, may help improve the efficacy of MMT initiatives and guide retention strategies throughout SSA.


Assuntos
Infecções por HIV , Linfoma , Estudos de Viabilidade , Feminino , Humanos , Linfoma/terapia , Malaui , Masculino , Estudos Prospectivos , Meios de Transporte
8.
Cancer Causes Control ; 31(4): 393-402, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32124187

RESUMO

BACKGROUND: Breast cancer incidence in sub-Saharan Africa (SSA) is increasing, and SSA has the highest age-standardized breast cancer mortality rate worldwide. However, high-quality breast cancer data are limited in SSA. MATERIALS AND METHODS: We examined breast cancer patient and tumor characteristics among women in Lilongwe, Malawi and evaluated risk factor associations with patient outcomes. We consecutively enrolled 100 women ≥ 18 years with newly diagnosed, pathologically confirmed breast cancer into a prospective longitudinal cohort with systematically assessed demographic data, HIV status, and clinical characteristics. Tumor subtypes were further determined by immunohistochemistry, overall survival (OS) was estimated using Kaplan-Meier methods, and hazards ratios (HR) were calculated by Cox proportional hazard analyses. RESULTS: Of the 100 participants, median age was 49 years, 19 were HIV-positive, and 75 presented with late stage (III/IV) disease. HER2-enriched and triple-negative/basal-like subtypes represented 17% and 25% tumors, respectively. One-year OS for the cohort was 74% (95% CI 62-83%). Multivariable analyses revealed mortality was associated with HIV (HR, 5.15; 95% CI 1.58-16.76; p = 0.006), stage IV disease (HR, 8.86; 95% CI 1.07-73.25; p = 0.043), and HER2-enriched (HR, 7.46; 95% CI 1.21-46.07; p = 0.031), and triple-negative subtypes (HR, 7.80; 95% CI 1.39-43.69; p = 0.020). CONCLUSION: Late stage presentation, HER2-enriched and triple-negative subtypes, and HIV coinfection were overrepresented in our cohort relative to resource-rich settings and were associated with mortality. These findings highlight robust opportunities for population- and patient-level interventions across the entire cascade of care to improve breast cancer outcomes in low-income countries in SSA.


Assuntos
Neoplasias da Mama/diagnóstico , Neoplasias da Mama/terapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Estudos de Coortes , Feminino , Infecções por HIV/epidemiologia , Humanos , Imuno-Histoquímica , Incidência , Estudos Longitudinais , Malaui/epidemiologia , Pessoa de Meia-Idade , Prognóstico , Modelos de Riscos Proporcionais , Estudos Prospectivos , Adulto Jovem
9.
Cancer Med ; 9(1): 77-83, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31705618

RESUMO

Aggressive non-Hodgkin lymphoma (NHL) is among the most common cancers in sub-Saharan Africa (SSA), where CHOP is standard treatment and outcomes are poor. To address this, we treated 17 newly diagnosed adult patients in Malawi with Burkitt (n = 8), plasmablastic (n = 8), and primary effusion lymphoma (n = 1) with a modified EPOCH regimen between 2016 and 2019. Twelve patients (71%) were male and the median age was 40 years (range 16-63). Eleven (65%) were HIV infected, median CD4 count was 218 cells/µL (range 9-460), and nine (82%) had suppressed HIV RNA < 400 copies/mL. Patients received a median of six cycles (range 2-8) and median follow-up was 14 months (range 2-34) among patients still alive. Grade 3/4 neutropenia was observed in 26% of cycles and in 65% of patients. Sixteen (94%) responded to EPOCH and 10 (59%) achieved a complete response. One-year overall survival (OS) was 62% (95% confidence interval [CI], 42%-91%). Five patients (29%) died from progressive NHL and three (18%) from treatment-related complications. These data suggest EPOCH with setting-appropriate modifications may be a practical, safe, and effective option for improving high-risk NHL outcomes in Malawi and comparable settings, which deserves further prospective evaluation.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Infecções por HIV/epidemiologia , Linfoma não Hodgkin/tratamento farmacológico , Neutropenia/epidemiologia , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Contagem de Linfócito CD4 , Ciclofosfamida/administração & dosagem , Ciclofosfamida/efeitos adversos , Doxorrubicina/administração & dosagem , Doxorrubicina/efeitos adversos , Etoposídeo/administração & dosagem , Etoposídeo/efeitos adversos , Feminino , Seguimentos , Infecções por HIV/sangue , Infecções por HIV/complicações , Humanos , Linfoma não Hodgkin/sangue , Linfoma não Hodgkin/complicações , Linfoma não Hodgkin/mortalidade , Malaui/epidemiologia , Masculino , Pessoa de Meia-Idade , Neutropenia/induzido quimicamente , Prednisona/administração & dosagem , Prednisona/efeitos adversos , Intervalo Livre de Progressão , RNA Viral/sangue , Vincristina/administração & dosagem , Vincristina/efeitos adversos , Adulto Jovem
10.
J Alzheimers Dis ; 22(2): 593-607, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20847409

RESUMO

Oxidative damage and amyloid-ß (Aß) protein misfolding are prominent features of Alzheimer's disease (AD). In vitro studies indicated a direct linkage between these two features, where lipid oxidation products augmented Aß misfolding. We tested this linkage further, mimicking specific conditions present in amyloid plaques. In vitro lipid oxidation and lipid modification of Aß were thus performed with elevated levels of copper or physiological levels of calcium. These in vitro experiments were then confirmed by in vivo immunohistochemical and chemical tagging of oxidative damage in brains from the PSAPP mouse model of AD. Our in vitro findings indicate that: 1) high levels of copper prevent lipid oxidation; 2) physiological concentrations of calcium reduce 4 hydroxy-2-nonenal (HNE) modification of Aß; and 3) anti-Aß and HNE antibody epitopes are differentially masked. In vivo we demonstrated increased lipid oxidation around plaques but 4) a lack of immunological colocalization of HNE-adducts with Aß. Thus, the lack of colocalization of Aß and HNE-adduct immunostaining is most likely due to a combination of metals inhibiting HNE modification of Aß, quenching lipid oxidation and a masking of HNE-Aß histopathology. However, other forms of oxidative damage colocalize with Aß in plaques, as demonstrated using a chemical method for identifying oxidative damage. Additionally, these findings suggest that HNE modification of Aß may affect therapeutic antibodies targeting the amino terminal of Aß and that metals effect on lipid oxidation and lipid modification of Aß could raise concerns on emerging anti-AD treatments with metal chelators.


Assuntos
Doença de Alzheimer/metabolismo , Peptídeos beta-Amiloides/metabolismo , Metabolismo dos Lipídeos/fisiologia , Aldeídos/metabolismo , Aldeídos/farmacologia , Doença de Alzheimer/genética , Peptídeos beta-Amiloides/farmacologia , Precursor de Proteína beta-Amiloide/genética , Animais , Cálcio/farmacologia , Sulfato de Cobre/farmacologia , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Feminino , Humanos , Bicamadas Lipídicas/metabolismo , Metabolismo dos Lipídeos/genética , Peroxidação de Lipídeos/genética , Peroxidação de Lipídeos/fisiologia , Masculino , Camundongos , Camundongos Transgênicos , Mutação/genética , Oxirredução/efeitos dos fármacos , Fragmentos de Peptídeos/farmacologia , Placa Amiloide/metabolismo , Presenilina-1/genética , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz/métodos
11.
Aust Fam Physician ; 35(8): 647-9, 2006 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16894444

RESUMO

BACKGROUND: The diagnosis of depression is often dependent on somatic symptoms which overlap with the symptoms of many medical illnesses. METHOD: We analysed tape recorded interviews of 46 out of 61 eligible community dwelling older adults with advanced disease and many somatic symptoms of depression. Participants answered an open question about feelings, and structured questions about symptoms of depression. RESULTS: Twenty-four (39%) patients met DSM-IV symptom criteria for depression when somatic symptoms were included, and only 1 (2%) when they were excluded. Of the 24, 22 (92%) reported two or more psychological symptoms of depression and 14 of the 17 (82%) for whom transcripts were available disclosed feelings of psychological distress. DISCUSSION: Although every older adult with advanced disease reported somatic symptoms of depression, most did not meet DSM-IV criteria of depression even when all somatic symptoms are included. Including somatic symptoms accurately identifies patients who warrant follow up when psychological distress in unstructured interviews is used as the gold standard. There is no need to exclude somatic symptoms when considering a diagnosis of major depression in medical patients.


Assuntos
Comorbidade , Transtorno Depressivo/diagnóstico , Idoso , Idoso de 80 Anos ou mais , Transtorno Depressivo/fisiopatologia , Transtorno Depressivo/psicologia , Medicina de Família e Comunidade , Feminino , Inquéritos Epidemiológicos , Humanos , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade , Desenvolvimento de Programas , Qualidade de Vida , Austrália do Sul
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