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1.
medRxiv ; 2024 Mar 06.
Artículo en Inglés | MEDLINE | ID: mdl-38585806

RESUMEN

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.
Artículo en Inglés | MEDLINE | ID: mdl-38370772

RESUMEN

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.
Artículo en Inglés | MEDLINE | ID: mdl-35772043

RESUMEN

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.


Asunto(s)
Asparaginasa , Leucemia-Linfoma Linfoblástico de Células Precursoras , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Humanos , Malaui/epidemiología , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras/etiología , Calidad de Vida , Adulto Joven
5.
JCO Glob Oncol ; 8: e2100315, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-35175832

RESUMEN

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.


Asunto(s)
Neoplasias , Participación del Paciente , Escolaridad , Conocimientos, Actitudes y Práctica en Salud , Humanos , Neoplasias/terapia , Encuestas y Cuestionarios
6.
Pediatr Blood Cancer ; 68(10): e29257, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34339099

RESUMEN

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.


Asunto(s)
Linfoma , Calidad de Vida , Niño , Femenino , Estudios de Seguimiento , Humanos , Linfoma/diagnóstico , Linfoma/epidemiología , Linfoma/terapia , Malaui/epidemiología , Masculino , Medición de Resultados Informados por el Paciente
7.
Int Health ; 13(3): 297-304, 2021 04 27.
Artículo en Inglés | MEDLINE | ID: mdl-33037426

RESUMEN

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.


Asunto(s)
Infecciones por VIH , Linfoma , Estudios de Factibilidad , Femenino , Humanos , Linfoma/terapia , Malaui , Masculino , Estudios Prospectivos , Transportes
8.
Cancer Causes Control ; 31(4): 393-402, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32124187

RESUMEN

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.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/terapia , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/patología , Estudios de Cohortes , Femenino , Infecciones por VIH/epidemiología , Humanos , Inmunohistoquímica , Incidencia , Estudios Longitudinales , Malaui/epidemiología , Persona de Mediana Edad , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Adulto Joven
9.
Cancer Med ; 9(1): 77-83, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31705618

RESUMEN

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.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Infecciones por VIH/epidemiología , Linfoma no Hodgkin/tratamiento farmacológico , Neutropenia/epidemiología , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Recuento de Linfocito CD4 , Ciclofosfamida/administración & dosificación , Ciclofosfamida/efectos adversos , Doxorrubicina/administración & dosificación , Doxorrubicina/efectos adversos , Etopósido/administración & dosificación , Etopósido/efectos adversos , Femenino , Estudios de Seguimiento , Infecciones por VIH/sangre , Infecciones por VIH/complicaciones , Humanos , Linfoma no Hodgkin/sangre , Linfoma no Hodgkin/complicaciones , Linfoma no Hodgkin/mortalidad , Malaui/epidemiología , Masculino , Persona de Mediana Edad , Neutropenia/inducido químicamente , Prednisona/administración & dosificación , Prednisona/efectos adversos , Supervivencia sin Progresión , ARN Viral/sangre , Vincristina/administración & dosificación , Vincristina/efectos adversos , Adulto Joven
10.
J Alzheimers Dis ; 22(2): 593-607, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20847409

RESUMEN

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.


Asunto(s)
Enfermedad de Alzheimer/metabolismo , Péptidos beta-Amiloides/metabolismo , Metabolismo de los Lípidos/fisiología , Aldehídos/metabolismo , Aldehídos/farmacología , Enfermedad de Alzheimer/genética , Péptidos beta-Amiloides/farmacología , Precursor de Proteína beta-Amiloide/genética , Animales , Calcio/farmacología , Sulfato de Cobre/farmacología , Modelos Animales de Enfermedad , Relación Dosis-Respuesta a Droga , Femenino , Humanos , Membrana Dobles de Lípidos/metabolismo , Metabolismo de los Lípidos/genética , Peroxidación de Lípido/genética , Peroxidación de Lípido/fisiología , Masculino , Ratones , Ratones Transgénicos , Mutación/genética , Oxidación-Reducción/efectos de los fármacos , Fragmentos de Péptidos/farmacología , Placa Amiloide/metabolismo , Presenilina-1/genética , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos
11.
Aust Fam Physician ; 35(8): 647-9, 2006 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16894444

RESUMEN

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.


Asunto(s)
Comorbilidad , Trastorno Depresivo/diagnóstico , Anciano , Anciano de 80 o más Años , Trastorno Depresivo/fisiopatología , Trastorno Depresivo/psicología , Medicina Familiar y Comunitaria , Femenino , Encuestas Epidemiológicas , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Desarrollo de Programa , Calidad de Vida , Australia del Sur
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