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1.
JMIR Cancer ; 10: e52018, 2024 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-39141902

RESUMO

BACKGROUND: Complementary and alternative (CAM) cancer treatment is often expensive and not covered by insurance. As a result, many people turn to crowdfunding to access this treatment. OBJECTIVE: The aim of this study is to identify the rationales of patients with cancer seeking CAM treatment abroad by looking specifically at crowdfunding campaigns to support CAM cancer treatment in Tijuana, Mexico. METHODS: We scraped the GoFundMe.com and GiveSendGo.com crowdfunding platforms for campaigns referencing CAM cancer clinics in Tijuana, initiated between January 1, 2022, and February 28, 2023. The authors created a coding framework to identify rationales for seeking CAM treatment in Tijuana. To supplement campaign metadata, we coded the beneficiary's cancer stage, type, age, specific treatment sought, whether the beneficiary died, gender, and race. RESULTS: Patients sought CAM cancer treatment in Tijuana because the (1) treatment offers the greatest efficacy (29.9%); (2) treatment offered domestically was not curative (23.2%); (3) the clinic treats the whole person, and addresses the spiritual dimension of the person (20.1%); (4) treatments are nontoxic, natural, or less invasive (18.2%); and (5) clinic offers the newest technology (8.5%). Campaigns raised US $5,275,268.37 and most campaign beneficiaries were women (69.7%) or White individuals (71.1%). CONCLUSIONS: These campaigns spread problematic misinformation about the likely efficacy of CAM treatments, funnel money and endorsements to CAM clinics in Tijuana, and leave many campaigners short of the money needed to pay for CAM treatments while costing beneficiaries and their loved one's time, privacy, and dignity. This study affirms that Tijuana, Mexico, is a very popular destination for CAM cancer treatment.

2.
Front Immunol ; 13: 1104625, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36703969

RESUMO

Galectins play relevant roles in tumor development, progression and metastasis. Accordingly, galectins are certainly enticing targets for medical intervention in cancer. To date, however, clinical trials based on galectin inhibitors reported inconclusive results. This review summarizes the galectin inhibitors currently being evaluated and discusses some of the biological challenges that need to be addressed to improve these strategies for the benefit of cancer patients.


Assuntos
Antineoplásicos , Galectinas , Neoplasias , Humanos , Galectinas/antagonistas & inibidores , Neoplasias/tratamento farmacológico , Neoplasias/metabolismo , Antineoplásicos/uso terapêutico
3.
Biosci Rep ; 2021 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-34755829

RESUMO

Breast cancer continues to affect millions of women worldwide, and the number of new cases dramatically increases every year. The physiological causes behind the disease are still not fully understood. One in every 100 cases can occur in men, and although the frequency is lower than among women, men tend to have a worse prognosis of the disease. Various therapeutic alternatives to combat the disease are available. These depend on the type and progress of the disease, and include chemotherapy, radiotherapy, surgery, and cancer immunotherapy. However, there are several well-reported side effects of these treatments that have a significant impact on life quality, and patients either relapse or are refractory to treatment. This makes it necessary to develop new therapeutic strategies. One promising initiative are bioactive peptides, which have emerged in recent years as a family of compounds with an enormous number of clinical applications due to their broad spectrum of activity. They are widely distributed in several organisms as part of their immune system. The antitumoral activity of these peptides lies in a nonspecific mechanism of action associated with their interaction with cancer cell membranes, inducing, through several routes, bilayer destabilization and cell death. This review provides an overview of the literature on the evaluation of cationic peptides as potential agents against breast cancer under different study phases. First, physicochemical characteristics such as the primary structure and charge are presented. Secondly, information about dosage, the experimental model used, and the mechanism of action proposed for the peptides are discussed.

4.
Int J Nanomedicine ; 16: 1601-1616, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33688181

RESUMO

INTRODUCTION: Cancer is the second leading cause of death globally and is responsible, where about 1 in 6 deaths in the world. Therefore, there is a need to develop effective antitumor agents that are targeted only to the specific site of the tumor to improve the efficiency of cancer diagnosis and treatment and, consequently, limit the unwanted systemic side effects currently obtained by the use of chemotherapeutic agents. In this context, due to its unique physical and chemical properties of graphene oxide (GO), it has attracted interest in biomedicine for cancer therapy. METHODS: In this study, we report the in vivo application of nanocomposites based on Graphene Oxide (nc-GO) with surface modified with PEG-folic acid, Rhodamine B and Indocyanine Green. In addition to displaying red fluorescence spectra Rhodamine B as the fluorescent label), in vivo experiments were performed using nc-GO to apply Photodynamic Therapy (PDT) and Photothermal Therapy (PTT) in the treatment of Ehrlich tumors in mice using NIR light (808 nm 1.8 W/cm2). RESULTS: This study based on fluorescence images was performed in the tumor in order to obtain the highest concentration of nc-GO in the tumor as a function of time (time after intraperitoneal injection). The time obtained was used for the efficient treatment of the tumor by PDT/PTT. DISCUSSION: The current study shows an example of successful using nc-GO nanocomposites as a theranostic nanomedicine to perform simultaneously in vivo fluorescence diagnostic as well as combined PDT-PTT effects for cancer treatments.


Assuntos
Grafite/química , Fotoquimioterapia , Terapia Fototérmica , Nanomedicina Teranóstica , Adsorção , Animais , Benzofuranos/química , Carcinoma de Ehrlich/patologia , Carcinoma de Ehrlich/terapia , Humanos , Verde de Indocianina/farmacologia , Masculino , Camundongos , Nanocompostos/química , Tamanho da Partícula , Rodaminas/farmacologia , Espectrometria de Fluorescência , Análise Espectral Raman , Eletricidade Estática , Carga Tumoral
5.
Pharmaceutics ; 13(1)2021 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-33466892

RESUMO

Metastasis is the process of dissemination of a tumor, whereby cells from the primary site dislodge and find their way to other tissues where secondary tumors establish. Metastasis is the primary cause of death related to cancer. This process warrants changes in original tumoral cells and their microenvironment to establish a metastatic niche. Traditionally, cancer therapy has focused on metastasis prevention by systematic treatments or direct surgical re-sectioning. However, metastasis can still occur. More recently, new therapies direct their attention to targeting cancer stem cells. As they propose, these cells could be the orchestrators of the metastatic niche. In this review, we describe conventional and novel developments in cancer therapeutics for liver and lung metastasis. We further discuss the resistance mechanisms of targeted therapy, the advantages, and disadvantages of diverse treatment approaches, and future novel strategies to enhance cancer prognosis.

6.
Crit Rev Oncol Hematol ; 129: 133-145, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30097232

RESUMO

BACKGROUND: A better understanding of the modulation of the immune system has resulted in the development of new classes of antitumor agents such as nivolumab and pembrolizumab. Despite the proven effectiveness and tolerability of these new drugs for specific types of cancer, the high cost of treatment has affected their accessibility. OBJECTIVE: The aim of this study is to conduct a meta-narrative review of studies that have addressed the concerns that have been voiced regarding the cost of and access to nivolumab and pembrolizumab in oncology health care. This meta-narrative review attempts to answer the following questions: (1) which papers have considered this broad topic area?; (2) what are the main empirical/theoretical findings?; and (3) what insights can be drawn by combining and comparing findings from different papers? METHODS AND DATA SOURCE: A meta-narrative review has been conducted in 5 research databases (Web of Science, Science Direct, Scopus, Embase and Pubmed) without time limitations up to January of 2017 to address concerns related to the cost of and access to nivolumab and pembrolizumab in oncology health care. From each research base, articles were selected that had a key word related to the theme of pharmacoeconomics and nivolumab or pembrolizumab in any field of scientific work. The research questions were analyzed through the application of a meta-narrative review approach and the use of a convergence-coding matrix to summarize similarities and differences directly related to the research topic between the different papers. KEY FINDINGS: The first contribution of this meta-narrative review is that it summarizes economic-based works on the use of nivolumab and pembrolizumab, particularly for three therapeutic indications: melanoma, NSCLC and RCC. In general, despite the clinical benefit of nivolumab and pembrolizumab being well accepted and proven by scientific works, the published studies show that there are contradictory results with regard to the cost-effectiveness of these anti-PD-1s. The regulatory, economic and epidemiological variations mean that healthcare costs for cancer patients vary greatly from country to country and according to the type of tumor. The second contribution has to do with the recommendations for the development of high quality process for pharmacoeconomic analyses, especially in the new field of immuno-oncology. Finally, the third contribution is with regard to recommendations for the sustainable use of immunotherapies. CONCLUSIONS: Given the revolution in cancer therapy in recent years, the efficient allocation of existing resources is essential for healthcare systems to meet the evolving needs of populations and remain sustainable in the long term. The application of high quality information that stems from scientific evidence and economic modeling can help considerably to make the healthcare system sustainable over time mainly due to a higher number of therapeutic indications or more countries giving regulatory approval for the use of new and expensive cancer drugs.


Assuntos
Anticorpos Monoclonais Humanizados/economia , Anticorpos Monoclonais/economia , Antineoplásicos/economia , Análise Custo-Benefício , Custos de Cuidados de Saúde , Acessibilidade aos Serviços de Saúde , Neoplasias/economia , Anticorpos Monoclonais/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Antineoplásicos/provisão & distribuição , Antineoplásicos/uso terapêutico , Humanos , Imunoterapia , Neoplasias/tratamento farmacológico , Nivolumabe
7.
P R Health Sci J ; 37(1): 46-51, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29547684

RESUMO

OBJECTIVE: To examine the health related quality of life (HRQOL) experienced by 79 Puerto Rican adults during cancer treatments. METHODS: This study used a descriptive, cross-sectional design. Participants completed a demographics form and the Functional Assessment of Cancer Therapy-General QOL questionnaire (FACT-G). Descriptive statistics were generated. RESULTS: Participants were ages 28-78; most of the participants had breast (38.0%), prostate (14.0%) and cervical and ovarian cancers (10.1%) treated with chemotherapy (45.6%). The participants had a mean total score on the FACT-G of 75.2 (SD = 18.9). As a group, the functional well-being was the most affected (mean 17.2, SD 6.8), and the Social/Familial was the least affected (mean 20.7, SD 6.0). CONCLUSION: Cancer is the leading cause of death in the island of Puerto Rico. Female Puerto Rican cancer patients in this study sample had increased risk for experiencing worse: overall HRQOL, physical well-being and emotional well-being compared to males. Given that the Hispanic oncology population does not always report symptoms, risking under-assessment and under management, this suggests there may be a greater need for HRQOL surveillance for this population.


Assuntos
Neoplasias/terapia , Qualidade de Vida , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Porto Rico , Autorrelato
8.
Clin J Oncol Nurs ; 18(5): 547-54, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25253108

RESUMO

Monitoring the occurrence and severity of symptoms among Mexican American adults undergoing cancer treatments, along with their self-care to alleviate symptoms, are understudied; the current study aimed to fill this gap in the literature. A total of 67 Mexican Americans receiving outpatient oncology treatments in the southwestern United States participated. Instruments included a patient-report checklist, the Therapy-Related Symptom Checklist (TRSC), the Symptom Alleviation: Self-Care Methods tool, and a demographic and health information form. At least 40% of participants reported the occurrence of 12 symptoms: hair loss, feeling sluggish, nausea, taste change, loss of appetite, depression, difficulty sleeping, weight loss, difficulty concentrating, constipation, skin changes, and numb fingers and toes. More than a third also reported pain, vomiting, decreased interest in sexual activity, cough, and sore throat. The helpful self-care strategies reported included diet and nutrition changes; lifestyle changes; and mind, body control, and spiritual activities. Patient report of symptoms during cancer treatments was facilitated by the use of the TRSC. Patients use symptom alleviation strategies to help relieve symptoms during their cancer treatment. The ability to perform appropriate, effective self-care methods to alleviate the symptoms may influence adherence to the treatment regimen.


Assuntos
Americanos Mexicanos , Neoplasias/tratamento farmacológico , Autocuidado , Antineoplásicos/uso terapêutico , Estudos Transversais , Humanos , Neoplasias/fisiopatologia , Texas , Estados Unidos
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