Direct and Abscopal Antitumor Responses Elicited by AlPcNE-Mediated Photodynamic Therapy in a Murine Melanoma Model.

Melanoma, the most aggressive form of skin cancer, presents a major clinical challenge due to its tendency to metastasize and recalcitrance to traditional therapies. Despite advances in surgery, chemotherapy, and radiotherapy, the outlook for advanced melanoma remains bleak, reinforcing the urgent need for more effective treatments. Photodynamic therapy (PDT) has emerged as a promising alternative, leading to targeted tumor destruction with minimal harm to surrounding tissues. In this study, the direct and abscopal antitumor effects of PDT in a bilateral murine melanoma model were evaluated. Although only one of the two tumors was treated, effects were observed in both. Our findings revealed significant changes in systemic inflammation and alterations in CD4+ and CD8+ T cell populations in treated groups, as evidenced by blood analyses and flow cytometry. High-throughput RNA sequencing (RNA-Seq) further unveiled shifts in gene expression profiles in both treated and untreated tumors. This research sheds light on the novel antitumor and abscopal effects of nanoemulsion of aluminum chloride phthalocyanine (AlPcNE)-mediated PDT in melanoma, highlighting the potential of different PDT protocols to modulate immune responses and to achieve more effective and targeted cancer treatments.

Prevention of chemotherapy-related bone loss with doxorubicin-loaded solid lipid nanoparticles.

Aim: Breast cancer and its metastases involve high mortality even with advances in chemotherapy. Solid lipid nanoparticles provide a platform for drug delivery, reducing side effects and treatment-induced bone loss. A solid nanoparticle containing doxorubicin was evaluated for its ability to prevent bone loss in a pre-clinical breast cancer model.Methods: We investigated the effects of SLNDox in an aggressive metastatic stage IV breast cancer model, which has some important features that are interesting for bone loss investigation. This study evaluates bone loss prevention potential from solid lipid nanoparticles containing doxorubicin breast cancer treatment, an evaluation of the attenuation of morphological changes in bone tissue caused by the treatment and the disease and an assessment of bone loss imaging using computed tomography and electron microscopy.Results: Chemotherapy-induced bone loss was also observed in tumor-free animals; a solid lipid nanoparticle containing doxorubicin prevented damage to the growth plate and to compact and cancellous bones in the femur of tumor-bearing and healthy animals.Conclusion: The association of solid lipid nanoparticles with chemotherapeutic drugs with proven efficacy promotes the prevention of serious consequences of chemotherapy, reducing tumor progression, increasing quality of life and improving prognosis and survival.

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Guardians' perceptions of the benefits of dogs in family dynamics during the pandemic. / Perceções dos tutores sobre o papel do cão na dinâmica familiar durante a pandemia.

During the pandemic, there were a lot of lockdowns that brought changes to the population's daily routine, reducing social interactions, changing work and study methods, isolating the family at their home, which brought changes to family dynamics. These changes sparked the interest of nursing students in carrying out a research study. Starting from the question: What is the role of the dog in the family dynamics in times of pandemic? and the objective: identify the guardians' perceptions about the role of the dog in the family dynamics in a period of confinement, a qualitative, exploratory, and descriptive study was carried out, collecting data through a focus group with six guardians from different families. Bardin's protocol was used to analyze and process the data. Three categories emerged in this study, highlighting the benefits in terms of mental health, physical and psychological well-being of the family with the presence of the dog, its importance in strengthening family ties and the lessons learned from adopting the dogs. We conclude that, in nursing, it is necessary to highlight the presence of the dog in the family since it brings benefits to its dynamics.

Com o confinamento imposto pelo SARS-CoV-2, houve mudanças na dinâmica familiar. Para os estudantes de enfermagem este foi um assunto que gerou interesse em investigar. Partindo da questão: Qual o papel do cão na dinâmica familiar em tempo de pandemia? e do objetivo: identificar as perceções dos tutores sobre o papel do cão na dinâmica familiar num período de confinamento, enveredámos por um estudo qualitativo, descritivo, com recurso a focus group e amostra de seis membros de famílias diferentes. O tratamento e análise de dados seguiu o protocolo de Bardin. Identificámos que a existência de cão numa família influencia a sua dinâmica através dos benefícios obtidos quer a nível da saúde mental e bem-estar psicológico, quer a nível da saúde física. Igualmente, destacaram-se vantagens, apesar de algumas desvantagens. O vínculo afetivo entre cão e família, advém da reflexão sobre legislação portuguesa, proteção dos direitos dos animais, responsabilidades dos tutores e configuração familiar. Concluímos que na enfermagem, é necessário relevar a presença do cão na família uma vez que traz benefícios para a sua dinâmica. Esta torna-se uma visão inovadora quando pretendemos contribuir para a manutenção da saúde familiar focada nas necessidades de cada indivíduo, família e comunidade.

Perceções dos tutores sobre o papel do cão na dinâmica familiar durante a pandemia / Guardians' perceptions of the benefits of dogs in family dynamics during the pandemic

Resumo Com o confinamento imposto pelo SARS-CoV-2, houve mudanças na dinâmica familiar. Para os estudantes de enfermagem este foi um assunto que gerou interesse em investigar. Partindo da questão: Qual o papel do cão na dinâmica familiar em tempo de pandemia? e do objetivo: identificar as perceções dos tutores sobre o papel do cão na dinâmica familiar num período de confinamento, enveredámos por um estudo qualitativo, descritivo, com recurso a focus group e amostra de seis membros de famílias diferentes. O tratamento e análise de dados seguiu o protocolo de Bardin. Identificámos que a existência de cão numa família influencia a sua dinâmica através dos benefícios obtidos quer a nível da saúde mental e bem-estar psicológico, quer a nível da saúde física. Igualmente, destacaram-se vantagens, apesar de algumas desvantagens. O vínculo afetivo entre cão e família, advém da reflexão sobre legislação portuguesa, proteção dos direitos dos animais, responsabilidades dos tutores e configuração familiar. Concluímos que na enfermagem, é necessário relevar a presença do cão na família uma vez que traz benefícios para a sua dinâmica. Esta torna-se uma visão inovadora quando pretendemos contribuir para a manutenção da saúde familiar focada nas necessidades de cada indivíduo, família e comunidade.

Abstract During the pandemic, there were a lot of lockdowns that brought changes to the population's daily routine, reducing social interactions, changing work and study methods, isolating the family at their home, which brought changes to family dynamics. These changes sparked the interest of nursing students in carrying out a research study. Starting from the question: What is the role of the dog in the family dynamics in times of pandemic? and the objective: identify the guardians' perceptions about the role of the dog in the family dynamics in a period of confinement, a qualitative, exploratory, and descriptive study was carried out, collecting data through a focus group with six guardians from different families. Bardin's protocol was used to analyze and process the data. Three categories emerged in this study, highlighting the benefits in terms of mental health, physical and psychological well-being of the family with the presence of the dog, its importance in strengthening family ties and the lessons learned from adopting the dogs. We conclude that, in nursing, it is necessary to highlight the presence of the dog in the family since it brings benefits to its dynamics.

Doxorubicin-induced Immunogenic Cell Death Impairs Tumor Progression and Distant Metastasis in a 4T1 Breast Cancer Tumor Model.

INTRODUCTION: Cancer is an individual disease and its formation and development are specific to each host. Conventional treatments are ineffective in complex cases, such as metastasis, and have severe adverse side effects. New strategies are needed to address the problem, and the use of immunogenic cell death (ICD) as a trigger or booster of the immune system through the exposure of damage-associated molecular patterns, along with tumor antigens, by cancerous cells is presented as an immunization approach in this work. METHODS: For this purpose, 4T1 cells were exposed to doxorubicin (DOX) for 24 hours and then, these cells undergoing ICD were subcutaneously administered to mice. The ICD induction by DOX on 4T1 was assessed by flow cytometry and image analysis. This immunization process was performed three times and after the last administration, the immunized mice were challenged with a subcutaneous xenograft of live cancer cells. RESULTS: The results demonstrate that the mice immunized with cells undergoing ICD after exposure to DOX presented no primary tumor or indications of distant metastatic lesion development. CONCLUSION: In summary, our findings indicate that the immunization process utilizing ICD is indeed efficacious in managing this aggressive form of pre-clinical breast cancer.

Hurdles in translating science from lab to market in delivery systems for Cosmetics: An industrial perspective.

In recent decades, a sweeping technological wave has reshaped the global economic landscape. Fueled by the unceasing forces of digital innovation and venture capital investment, this transformative machine has left a significant mark across numerous economic sectors. More recently, the emergence of 'deep tech' start-ups, focusing on areas such as artificial intelligence, nanotechnology, and biotechnology, has infused a fresh wave of innovation into various sectors, including the pharmaceutical and cosmetic industry. This review explores the significance of innovation within the cosmetics sector, with a particular emphasis on delivery systems. It assesses the crucial process of bridging the gap between research and the market, particularly in the translation of nanotechnology into tangible real-world applications. With the rise of nanotechnology-based beauty ingredients, we can anticipate groundbreaking advancements that promise to surpass consumer expectations, ushering in a new era of unparalleled innovation in beauty products.

Innovative Pre-Clinical Data Using Peptides to Intervene in the Evolution of Pulmonary Fibrosis.

Idiopathic pulmonary fibrosis (IPF) is a progressive, relentless, and deadly disease. Little is known about its pathogenetic mechanisms; therefore, developing efficient pharmacological therapies is challenging. This work aimed to apply a therapeutic alternative using immunomodulatory peptides in a chronic pulmonary fibrosis murine model. BALB/c mice were intratracheally instilled with bleomycin (BLM) and followed for 30 days. The mice were treated with the immune modulatory peptides ToAP3 and ToAP4 every three days, starting on the 5th day post-BLM instillation. ELISA, qPCR, morphology, and respiratory function analyses were performed. The treatment with both peptides delayed the inflammatory process observed in the non-treated group, which showed a fibrotic process with alterations in the production of collagen I, III, and IV that were associated with significant alterations in their ventilatory mechanics. The ToAP3 and ToAP4 treatments, by lung gene modulation patterns, indicated that distinct mechanisms determine the action of peptides. Both peptides controlled the experimental IPF, maintaining the tissue characteristics and standard function properties and regulating fibrotic-associated cytokine production. Data obtained in this work show that the immune response regulation by ToAP3 and ToAP4 can control the alterations that cause the fibrotic process after BLM instillation, making both peptides potential therapeutic alternatives and/or adjuvants for IPF.

Application of Nanomedicine in Immunotherapy: Recent Advances and Prospects.

Nanomedicine is a special medical field focused on the application of nanotechnology to provide innovations for healthcare in different areas, including the treatment of a wide variety of diseases, including cancer [...].

The Family's Contribution to Patient Safety.

BACKGROUND: Person- and family-centered care is one of the recommendations to achieve quality of care and patient safety. However, many health professionals associate the family with insecurity in care. OBJECTIVE: To analyze, based on nurses' statements, the advantages and disadvantages of the family's presence in hospitals for the safety of hospitalized patients. METHODS: This was a qualitative interpretative study based on James Reason's risk model, conducted through semi-structured interviews with 10 nurses selected by convenience. A content analysis was performed using Bardin's methodology and MAXQDA Plus 2022 software. RESULTS: We identified 17 categories grouped according to the representation of the family in patient safety: The family as a Potentiator of Security Failures (7) and Family as a Safety Barrier (10). CONCLUSIONS: The higher number of categories identified under Family as a Safety Barrier shows that nurses see strong potential in the family's involvement in patient safety. By identifying the need to intervene with and for families so that their involvement is safe, we observed an increase in the complexity of nursing care, which suggests the need to improve nursing ratios, according to the participants.

Literacia em saúde e consumo de substâncias psicoativas em jovens

Introdução: O consumo de substâncias psicoativas pelos jovens tornou-se uma questão inquietante para a enfermagem. Sabendo que a Literacia em Saúde (LS) é a capacidade das pessoas adquirirem conhecimento de modo a tomarem decisões relativamente à prevenção da doença e promoção de saúde, surgiu a questão: qual a relação entre a LS e o consumo de substâncias psicoativas nos jovens? Objetivos: Caracterizar a LS, o consumo de substâncias psicoativas e a sua relação. Metodologia: Estudo exploratório, descritivo e correlacional. Amostra de conveniência com 103 jovens. Instrumentos: Questionário sociodemográfico, Escala de Literacia em Saúde e Alcohol, Smoking and Substance Involvement Screening Test. O tratamento de dados foi realizado através do SPSS 25. Resultados e discussão: Amostra maioritariamente do sexo feminino (82,5%) e estudantes (62,1%), cuja média de idades é 21,05 anos. As substâncias mais consumidas são o álcool (75%), o tabaco (50,5%), a cannabis (35%) e as benzodiazepinas (22,5%). Verificaram-se policonsumos (álcool, tabaco e cannabis). O grau de LS é desadequado, e não se verificaram associações entre o consumo de substâncias e o grau de literacia. Detetaram-se diferenças estatisticamente significativa entre o consumo de benzodiazepinas e a situação profissional, verificando-se que as pessoas desempregadas têm maior consumo de benzodiazepinas. Conclusão: Urge intervir na promoção da LS dos jovens, com a finalidade de os motivar a diminuir ou parar o consumo de substâncias que possam comprometer a sua saúde. Sugerem-se estudos com amostras maiores e analisar outras variáveis que contribuam para estes comportamentos aditivos. (AU)

Introduction: The consumption of psychoactive substances by young people has become a topic of great concern for nursing. Knowing that Health Literacy (HL) is the ability of people to acquire knowledge to make decisions regarding disease prevention and health promotion, the question arose: what is the relationship between HL and the consumption of psychoactive substances in young people? Objectives: To characterize HL, the consumption of psychoactive substances and their relationship. Methodology: Exploratory, descriptive, and correlational study. Convenience sample with 103 young people. Instruments: Sociodemographic Questionnaire, Health and Alcohol Literacy Scale, Smoking and Substance Involvement Screening Test. Data processing was performed using SPSS 25. Results and discussion: The sample was primarily female (82.5%) and students (62.1%), with an average age of 21.05. The most consumed substances were alcohol (75%), followed by tobacco (50.5%), cannabis (35%) and benzodiazepines (22.5%). Also, polyconsumption (alcohol, tobacco, and cannabis) was observed. The degree of HL is inadequate, and there were no associations between substance use and the degree of literacy. However, statistically significant differences were found between the consumption of benzodiazepines and the professional situation, concluding that unemployed people have a higher consumption of benzodiazepines. Conclusion: It is urgent to intervene in the promotion of HL in young people to motivate them to reduce or stop the consumption of substances that may compromise their health. Further studies with larger samples and analysing other variables that contribute to these addictive behaviours are suggested. (AU)

Nucleotides Entrapped in Liposome Nanovesicles as Tools for Therapeutic and Diagnostic Use in Biomedical Applications.

The use of nucleotides for biomedical applications is an old desire in the scientific community. As we will present here, there are references published over the past 40 years with this intended use. The main problem is that, as unstable molecules, nucleotides require some additional protection to extend their shelf life in the biological environment. Among the different nucleotide carriers, the nano-sized liposomes proved to be an effective strategic tool to overcome all these drawbacks related to the nucleotide high instability. Moreover, due to their low immunogenicity and easy preparation, the liposomes were selected as the main strategy for delivery of the mRNA developed for COVID-19 immunization. For sure this is the most important and relevant example of nucleotide application for human biomedical conditions. In addition, the use of mRNA vaccines for COVID-19 has increased interest in the application of this type of technology to other health conditions. For this review article, we will present some of these examples, especially focused on the use of liposomes to protect and deliver nucleotides for cancer therapy, immunostimulatory activities, enzymatic diagnostic applications, some examples for veterinarian use, and the treatment of neglected tropical disease.

"Looking beyond Mental Health Stigma": An Online Focus Group Study among Senior Undergraduate Nursing Students.

Evidence highlights the need for professionals to be aware of their stigmatizing attitudes and discriminatory practices in order to minimize the negative impact on the people they take care of. However, nursing students' perceptions of these issues have been poorly studied. This study explores the perspective of senior undergraduate nursing students on mental health and the stigma around it, by considering a simulated case vignette of a person with a mental health problem. A descriptive qualitative approach was chosen and involved three online focus group discussions. The findings show various manifestations of stigma, both at an individual and collective level, which indicates that it is an obstacle to the wellbeing of people with mental illness. Individual manifestations of stigma concern its effect on the person with mental illness, while at the collective level they concern the family or society in general. Stigma is a multifactorial, multidimensional, and complex concept, in terms of identifying and fighting it. Thus, the strategies identified involve multiple approaches at the individual level, aimed at the patient and family, namely through education/training, communication, and relationship strategies. At the collective level, to intervene with the general population and specific groups, such as groups of young people, strategies suggested include education/training, use of the media, and contact with people with mental disorders as ways to fight stigma.

Recent approaches in nanocarrier-based therapies for neglected tropical diseases.

Neglected tropical diseases (NTDs) remain major public health problems in developing countries. Reducing the burden of NTDs requires sustained collaborative drug discovery efforts to achieve the goals of the new NTDs roadmap launched by the World Health Organization. Oral drugs are the most convenient choice and usually the safest and least expensive. However, the oral use of some drugs for NTDs treatment has many drawbacks, including toxicity, adverse reactions, drug resistance, drug low solubility, and bioavailability. Since there is an imperative need for novel and more effective drugs to treat the various NTDs, in recent years, several compound-loaded nanoparticles have been prepared with the objective of evaluating their application as an oral drug delivery system for the treatment of NTDs. This review focuses on the various types of nanoparticle drug delivery systems that have been recently used against the major NTDs caused by parasites such as leishmaniasis, Chagas disease, and schistosomiasis. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.

Development of New Natural Lipid-Based Nanoparticles Loaded with Aluminum-Phthalocyanine for Photodynamic Therapy against Melanoma.

Photodynamic therapy (PDT) mediated by photosensitizers loaded in nanostructures as solid lipid nanoparticles has been pinpointed as an effective and safe treatment against different skin cancers. Amazon butters have an interesting lipid composition when it comes to forming solid lipid nanoparticles (SLN). In the present report, a new third-generation photosensitizing system consisting of aluminum-phthalocyanine associated with Amazon butter-based solid lipid nanoparticles (SLN-AlPc) is described. The SLN was developed using murumuru butter, and a monodisperse population of nanodroplets with a hydrodynamic diameter of approximately 40 nm was obtained. The study of the permeation of these AlPc did not permeate the analyzed skin, but when incorporated into the system, SLN-AlPc allowed permeation of almost 100% with 8 h of contact. It must be emphasized that SLN-AlPc was efficient for carrying aluminum-phthalocyanine photosensitizers and exhibited no toxicity in the dark. Photoactivated SLN-AlPc exhibited a 50% cytotoxicity concentration (IC50) of 19.62 nM when applied to B16-F10 monolayers, and the type of death caused by the treatment was apoptosis. The exposed phospholipid phosphatidylserine was identified, and the treatment triggered a high expression of Caspase 3. A stable Amazon butter-based SLN-AlPc formulation was developed, which exhibits strong in vitro photodynamic activity on melanoma cells.

An Overview on Immunogenic Cell Death in Cancer Biology and Therapy.

Immunogenic cell death (ICD) is a modality of regulated cell death that is sufficient to promote an adaptive immune response against antigens of the dying cell in an immunocompetent host. An important characteristic of ICD is the release and exposure of damage-associated molecular patterns, which are potent endogenous immune adjuvants. As the induction of ICD can be achieved with conventional cytotoxic agents, it represents a potential approach for the immunotherapy of cancer. Here, different aspects of ICD in cancer biology and treatment are reviewed.

Fish Oil Nanoemulsion Supplementation Attenuates Bleomycin-Induced Pulmonary Fibrosis BALB/c Mice.

Diets rich in omega-3 or -6 fatty acids will produce different profiles for cell membranes phospholipid constitutions. Omegas 3 and 6 are part of the diet and can modulate the inflammatory profile. We evaluated the effects of the oral absorption of fish oil, when associated with a lipid nanoemulsion in an experimental pulmonary inflammatory model. Pulmonary fibrosis is a disease associated with excessive extracellular matrix deposition. We determined to investigate the morphophysiological mechanisms in mice that were pretreated after induction with bleomycin (BLM). The pretreatment was for 21 days with saline solution, sunflower oil (SO), fish oil (FO), and fish oil nanoemulsion (NEW3). The animals received a daily dose of 50 mg/Kg of docosahexaenoic acid DHA and 10 mg/Kg eicosapentaenoic (EPA) (100 mg/Kg), represented by a daily dose of 40 µL of NEW3. The blank group was treated with the same amount daily (40 µL) during the 21 days of pretreatment. The animals were treated with SO and FO, 100 mg/Kg (containing 58 mg/Kg of polyunsaturated fats/higher% linoleic acid) and 100 mg/Kg (50 mg/Kg of DHA and 10 mg/Kg EPA), respectively. A single dose of 5 mg/mL (50 µL) bleomycin sulfate, by the intratracheal surgical method in BALB/cAnNTac (BALB/c). NEW3 significantly reduced fibrotic progression, which can be evidenced by the protection from loss of body mass, increase in respiratory incursions per minute, decreased spacing of alveolar septa, decreased severity of fibrosis, and changes in the respiratory system. NEW3 attenuated the inflammatory changes developed in the experimental model of pulmonary fibrosis, while group SO showed a significant increase in inflammatory changes. This concluded that the presented results demonstrated that is possible to positively modulate the immune and inflamamtory response to an external agressor, by changing the nutitional intake of specific fatty acids, such as omega-3 placed in fish oil. Moreover, these benefits can be improved by the nanoencapsulation of fish oil in lipid nanoemulsions.