Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 11 de 11
Filtrar
Mais filtros











Base de dados
Tipo de estudo
Intervalo de ano de publicação
1.
Artigo em Inglês | MEDLINE | ID: mdl-38996385

RESUMO

Health care workers have faced a significant challenge because of the rise in cancer incidence around the world during the past 10 years. Among various forms of malignancy skin cancer is most common, so there is need for the creation of an efficient and safe skin cancer treatment that may offer targeted and site-specific tumor penetration, and reduce unintended systemic toxicity. Nanocarriers have thus been employed to get around the issues with traditional anti-cancer drug delivery methods. Invasomes are lipid-based nanovesicles having small amounts of terpenes and ethanol or a mixture of terpenes and penetrate the skin more effectively. Compared to other lipid nanocarriers, invasomes penetrate the skin at a substantially faster rate. Invasomes possess a number of advantages, including improved drug effectiveness, higher compliance, patient convenience, advanced design, multifunctionality, enhanced targeting capabilities, non-invasive delivery methods, potential for combination therapies, and ability to overcome biological barriers,. These attributes position invasomes as a promising and innovative platform for the future of cancer treatment. The current review provides insights into invasomes, with a fresh organizational scheme and incorporates the most recent cancer research, including their composition, historical development and methods of preparation, the penetration mechanism involving effect of various formulation variables and analysis of anticancer mechanism and the application of invasomes.

2.
Drug Metab Pers Ther ; 39(1): 5-20, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38469723

RESUMO

INTRODUCTION: Cancer biomarkers have revolutionized the field of oncology by providing valuable insights into tumor changes and aiding in screening, diagnosis, prognosis, treatment prediction, and risk assessment. The emergence of "omic" technologies has enabled biomarkers to become reliable and accurate predictors of outcomes during cancer treatment. CONTENT: In this review, we highlight the clinical utility of biomarkers in cancer identification and motivate researchers to establish a personalized/precision approach in oncology. By extending a multidisciplinary technology-based approach, biomarkers offer an alternative to traditional techniques, fulfilling the goal of cancer therapeutics to find a needle in a haystack. SUMMARY AND OUTLOOK: We target different forms of cancer to establish a dynamic role of biomarkers in understanding the spectrum of malignancies and their biochemical and molecular characterization, emphasizing their prospective contribution to cancer screening. Biomarkers offer a promising avenue for the early detection of human cancers and the exploration of novel technologies to predict disease severity, facilitating maximum survival and minimum mortality rates. This review provides a comprehensive overview of the potential of biomarkers in oncology and highlights their prospects in advancing cancer diagnosis and treatment.


Assuntos
Neoplasias , Medicina de Precisão , Humanos , Medicina de Precisão/métodos , Estudos Prospectivos , Biomarcadores , Neoplasias/diagnóstico , Neoplasias/terapia , Biomarcadores Tumorais , Prognóstico
3.
Naunyn Schmiedebergs Arch Pharmacol ; 397(2): 703-724, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-37615709

RESUMO

The main objective of this review is to highlight the therapeutic potential of allicin, a defense molecule in garlic known for its diverse health benefits, and address the key challenges of its bioavailability and stability. The research further aims to evaluate various formulation strategies and nanotechnology-based delivery systems that can resolve these issues and improve allicin's clinical efficacy, especially in cancer therapy. We conducted a comprehensive review of the available literature and previous studies, focusing on the therapeutic properties of allicin, its bioavailability, stability issues, and novel formulation strategies. We assessed the mechanism of action of allicin in cancer, including its effects on signaling pathways, cell cycle, apoptosis, autophagy, and tumor development. We also evaluated the outcomes of both in vitro and in vivo studies on different types of cancers, such as breast, cervical, colon, lung, and gastric cancer. Despite allicin's significant therapeutic benefits, including cardiovascular, antihypertensive, cholesterol-lowering, antimicrobial, antifungal, anticancer, and immune-modulatory activity, its clinical utility is limited due to poor stability and unpredictable bioavailability. Allicin's bioavailability in the gastrointestinal tract is dependent on the activity of the enzyme alliinase, and its stability can be affected by various conditions like gastric acid and intestinal enzyme proteases. Recent advances in formulation strategies and nanotechnology-based drug delivery systems show promise in addressing these challenges, potentially improving allicin's solubility, stability, and bioavailability. Allicin offers substantial potential for cancer therapy, yet its application is hindered by its instability and poor bioavailability. Novel formulation strategies and nanotechnology-based delivery systems can significantly overcome these limitations, enhancing the therapeutic efficacy of allicin. Future research should focus on refining these formulation strategies and delivery systems, ensuring the safety and efficacy of these new allicin formulations. Clinical trials and long-term studies should be carried out to determine the optimal dosage, assess potential side effects, and evaluate their real-world applicability. The comparative analysis of different drug delivery approaches and the development of targeted delivery systems can also provide further insight into enhancing the therapeutic potential of allicin.


Assuntos
Dissulfetos , Neoplasias , Humanos , Disponibilidade Biológica , Ácidos Sulfínicos/uso terapêutico , Ácidos Sulfínicos/metabolismo , Ácidos Sulfínicos/farmacologia , Resultado do Tratamento , Neoplasias/tratamento farmacológico
4.
Rev Port Cardiol ; 42(11): 917-924, 2023 11.
Artigo em Inglês, Português | MEDLINE | ID: mdl-37414337

RESUMO

Peripartum cardiomyopathy is a rare type of heart failure manifesting towards the end of pregnancy or in the months following delivery, in the absence of any other cause of heart failure. There is a wide range of incidence across countries reflecting different population demographics, uncertainty over definitions and under-reporting. Race, ethnicity, multiparity and advanced maternal age are considered important risk factors for the disease. Its etiopathogenesis is incompletely understood and is likely multifactorial, including hemodynamic stresses of pregnancy, vasculo-hormonal factors, inflammation, immunology and genetics. Affected women present with heart failure secondary to reduced left ventricular systolic function (LVEF <45%) and often with associated phenotypes such as LV dilatation, biatrial dilatation, reduced systolic function, impaired diastolic function, and increased pulmonary pressure. Electrocardiography, echocardiography, magnetic resonance imaging, endomyocardial biopsy, and certain blood biomarkers aid in diagnosis and management. Treatment for peripartum cardiomyopathy depends on the stage of pregnancy or postpartum, disease severity and whether the woman is breastfeeding. It includes standard pharmacological therapies for heart failure, within the safety restrictions for pregnancy and lactation. Targeted therapies such as bromocriptine have shown promise in early, small studies, with large definitive trials currently underway. Failure of medical interventions may require mechanical support and transplantation in severe cases. Peripartum cardiomyopathy carries a high mortality rate of up to 10% and a high risk of relapse in subsequent pregnancies, but over half of women present normalization of LV function within a year of diagnosis.


Assuntos
Cardiomiopatias , Insuficiência Cardíaca , Complicações Cardiovasculares na Gravidez , Transtornos Puerperais , Gravidez , Feminino , Humanos , Período Periparto , Cardiomiopatias/diagnóstico , Cardiomiopatias/etiologia , Cardiomiopatias/terapia , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/terapia , Prognóstico , Ecocardiografia , Transtornos Puerperais/diagnóstico , Transtornos Puerperais/etiologia , Transtornos Puerperais/terapia , Complicações Cardiovasculares na Gravidez/terapia , Complicações Cardiovasculares na Gravidez/tratamento farmacológico
5.
Curr Drug Discov Technol ; 20(2): e311022210504, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36321238

RESUMO

The treatment measures of malignant carcinomas are most important for human health. In recent years the use of targeted therapy based on small molecule compounds and identical immunoglobulin has been the most frequently used tool to combat cancerous cells. But there are still several limitations in their clinical development and applications, including their ability to bind multiple molecular target sites, both cell surface receptors and intracellular proteins, promoting a greater risk of toxicity. PROTAC is a novel technology that maintains a balance between protein synthesis and degradation and uses molecules instead of conventional enzyme inhibitors, containing two active domains and a linker to destroy unwanted selective protein (like kinase, skeleton protein and regulatory protein). PROTACs are heterobifunctional nano molecules with a size range of about 10 nanometres that eliminate the protein complexes formed by protein-protein interaction through large and flat surfaces generally defined as "undruggable" in conventional drug delivery systems, which include around 85% of proteins present in humans, suggesting their wide application in the field of drug development. Such peptide-based PROTACs have successfully shown targets' destruction in cultured cells (e.g., MetAP-2, and FKBP12F36V, receptors for estrogens and androgen). However, some obstacles prevent this technology from transferring from the laboratory to its actual clinical utility, such as delivery system and bioavailability. The scope of the presented review is to give an overview of novel PROTAC technology with its limitations, advantages, mechanism of action, and development of photocontrolled PROTACs and to summarize its futuristic approach to targeting proteins in cancer cells.


Assuntos
Neoplasias , Proteínas , Humanos , Aminopeptidases/metabolismo , Sistemas de Liberação de Medicamentos , Inibidores Enzimáticos , Neoplasias/tratamento farmacológico , Proteínas/metabolismo , Proteólise
6.
Environ Sci Pollut Res Int ; 29(60): 89853-89873, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36367649

RESUMO

Cancer is an illness characterized by abnormal cell development and the capability to infiltrate or spread to rest of the body. A tumor is the term for this abnormal growth that develops in solid tissues like an organ, muscle, or bone and can spread to other parts of the body through the blood and lymphatic systems. Nutrition is a critical and immortal environmental component in the development of all living organisms encoding the relationship between a person's nutrition and their genes. Nutrients have the ability to modify gene expression and persuade alterations in DNA and protein molecules which is researched scientifically in nutrigenomics. These interactions have a significant impact on the pharmacokinetic properties of bioactive dietary components as well as their site of action/molecular targets. Nutrigenomics encompasses nutrigenetics, epigenetics, and transcriptomics as well as other "omic" disciplines like proteomics and metabolomics to explain the vast disparities in cancer risk among people with roughly similar life style. Clinical trials and researches have evidenced that alternation of dietary habits is potentially one of the key approaches for reducing cancer risk in an individual. In this article, we will target how nutrigenomics and functional food work as preventive therapy in reducing the risk of cancer.


Assuntos
Terapias Complementares , Neoplasias , Humanos , Metabolômica , Proteômica , Neoplasias/prevenção & controle
7.
Curr Top Med Chem ; 22(2): 132-149, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34649489

RESUMO

Bergenin, 4-O-methyl gallic acid glucoside, is a bioactive compound in various plants belonging to different families. The present work compiles scattered information on pharmacology, structure-activity relationship and nanotechnological aspects of bergenin, collected from various electronic databases such as Sci Finder, PubMed, Google Scholar, etc. Bergenin has been reported to exhibit hepatoprotective, anti-inflammatory, anticancer, neuroprotective, antiviral, and antimicrobial activities. Molecular docking studies have shown that isocoumarin pharmacophore of bergenin is essential for its bioactivities. Bergenin holds a great potential to be used as a lead molecule and also as a therapeutic agent for the development of more efficacious and safer semisynthetic derivatives. Nanotechnological concepts can be employed to overcome the poor bioavailability of bergenin. Finally, it is concluded that bergenin can emerge as clinically potential medicine in modern therapeutics.


Assuntos
Benzopiranos , Benzopiranos/farmacologia , Humanos , Simulação de Acoplamento Molecular , Relação Estrutura-Atividade
8.
Curr Drug Metab ; 22(6): 451-480, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33761852

RESUMO

Obesity is a major disorder characterized by excessive fat in the body. Various factors responsible for obesity are dietary, lifestyle, genetic, and environmental factors. The last two decades witnessed an enormous increase in obesity and its comorbidities among people worldwide, thus making it the fifth major cause of human death. As per the recent report of WHO, a total of 38 million children (age < 5 years) were overweight or obese in 2019, and according to the Organization for Economic Cooperation and Development (OECD) report, almost 1 in 4 people are obese. For the treatment of obesity, various synthetic drugs are available but on the other side, these are associated with severe adverse effects. To overcome this problem and in the view of the current situation, researchers emphasize more on the development of natural products for the management of obesity. Primary and secondary metabolites like polyphenols, alkaloids, saponins, and flavonoids derived from various plants worldwide are used to develop a formulation for the management of obesity. The phytoconstituents exert their action by suppressing the proliferation of adipocytes, inducing apoptosis of adipocytes, inhibiting lipogenesis, activating lipases, stimulating fatty acid ß-oxidation, diminishing inflammatory responses, or conquering oxidative stress. This review also highlights the importance of the nanoencapsulation technique which enhances the efficacy of phytoconstituents by improving solubility, stability, and bioavailability to fight against obesity and comorbidity.


Assuntos
Produtos Biológicos/uso terapêutico , Obesidade/tratamento farmacológico , Dieta , Flavonoides/uso terapêutico , Humanos , Obesidade/fisiopatologia , Polifenóis/uso terapêutico
9.
Chem Commun (Camb) ; 56(2): 289-292, 2019 Dec 19.
Artigo em Inglês | MEDLINE | ID: mdl-31808471

RESUMO

A novel biosensor for the rapid detection of lead ions employing the optical properties of AuNPs, a lead-specific aptamer and a cationic peptide has been demonstrated. The limit of detection of the biosensor was 98.7 pM, the lowest so far obtained using colorimetry.


Assuntos
Aptâmeros de Nucleotídeos/química , Colorimetria/métodos , Chumbo/análise , Nanopartículas Metálicas/química , Peptídeos/química , Técnicas Biossensoriais/métodos , Cor , DNA/química , Ouro/química , Limite de Detecção , Ressonância de Plasmônio de Superfície/métodos
10.
Bioconjug Chem ; 29(4): 1102-1110, 2018 04 18.
Artigo em Inglês | MEDLINE | ID: mdl-29489340

RESUMO

Peptide-based drug delivery systems have become a mainstay in the contemporary medicinal field, resulting in the design and development of better pharmaceutical formulations. However, most of the available reports employ tedious multiple reaction steps for the conjugation of bioactive cationic peptides with drug delivery vehicles. To overcome these limitations, the present work describes a one-step approach for facile and time efficient synthesis of highly cationic cell penetrating peptide functionalized gold nanoparticles and their intracellular delivery. The nanoconstruct was synthesized by the reduction of gold metal ions utilizing cell penetrating peptide (CPP), which facilitated the simultaneous synthesis of metal nanoparticles and the capping of the peptide over the nanoparticle surface. The developed nanoconstruct was thoroughly characterized and tested for intracellular delivery into HeLa cells. Intriguingly, a high payload of cationic peptide over gold particles was achieved, in comparison to conventional conjugation methods. Moreover, this method also provides the ability to control the size and peptide payload of nanoparticles. The nanoconstructs produced showed enhanced cancer cell penetration (µM) and significant cytotoxic effect compared to unlabeled gold nanoparticles. Therefore, this novel approach may also have significant future potential to kill intracellular hidden dreaded pathogens like the human immunodeficiency virus, Mycobacterium tuberculosis, and so forth.


Assuntos
Peptídeos Penetradores de Células/administração & dosagem , Ouro/química , Nanopartículas Metálicas/química , Peptídeos/síntese química , Cátions , Proliferação de Células/efeitos dos fármacos , Peptídeos Penetradores de Células/química , Peptídeos Penetradores de Células/farmacologia , Coloides/química , Sistemas de Liberação de Medicamentos , Estabilidade de Medicamentos , Células HeLa , Humanos , Concentração de Íons de Hidrogênio , Peptídeos/química , Temperatura , Água
11.
Sci Rep ; 6: 35535, 2016 10 19.
Artigo em Inglês | MEDLINE | ID: mdl-27759052

RESUMO

Highly water dispersible boron based compounds are innovative and advanced materials which can be used in Boron Neutron Capture Therapy for cancer treatment (BNCT). Present study deals with the synthesis of highly water dispersible nanostructured Boron Nitride (BN). Unique and relatively low temperature synthesis route is the soul of present study. The morphological examinations (Scanning/transmission electron microscopy) of synthesized nanostructures showed that they are in transient phase from two dimensional hexagonal sheets to nanotubes. It is also supported by dual energy band gap of these materials calculated from UV- visible spectrum of the material. The theoretically calculated band gap also supports the same (calculated by virtual nano lab Software). X-ray diffraction (XRD) analysis shows that the synthesized material has deformed structure which is further supported by Raman spectroscopy. The structural aspect of high water disperse ability of BN is also studied. The ultra-high disperse ability which is a result of structural deformation make these nanostructures very useful in BNCT. Cytotoxicity studies on various cell lines (Hela(cervical cancer), human embryonic kidney (HEK-293) and human breast adenocarcinoma (MCF-7)) show that the synthesized nanostructures can be used for BNCT.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA