Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Mais filtros








Base de dados
Intervalo de ano de publicação
1.
J Microencapsul ; 37(5): 394-402, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32400238

RESUMO

Aims: Citrus lemon essential oil (CLEO) has been introduced as a strong antioxidant mixture. However, it is not efficient enough due to its hydrophobic nature. Nanoemulsions improve the drugs' bio-compatibility in aqueous conditions.Methods: The CLEO nanoemulsion (CLEO-NE) was formulated by ultrasound-based-emulsification and they were characterised. The anti-angiogenic and antioxidant activities were studied by the chicken chorioallantoic membrane (CAM) and antioxidant (ABTS and DPPH) assays, respectively. Finally, the apoptotic property of CLEO-NE on both HFF and A549 was evaluated by [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] (MTT) assay and real time-PCR (measuring Cas-3 gene expression).Results: The 30.2-nm CLEO-NE droplets significantly increased Cas-3 in A549 cells and decreased angiogenesis in chick embryo chorioallantoic membrane (p < 0.01).Conclusion: In conclusion, CLEO-NE has the potential to be used as a safe cell-depended anticancer agent for human lung cancer. However, further genes and cell lines have to be studied to clarify its targeted-anticancer activity.


Assuntos
Inibidores da Angiogênese/farmacologia , Apoptose/efeitos dos fármacos , Citrus/química , Óleos Voláteis/química , Óleos de Plantas/administração & dosagem , Células A549 , Animais , Antioxidantes/química , Linhagem Celular Tumoral , Embrião de Galinha , Membrana Corioalantoide/efeitos dos fármacos , Sistemas de Liberação de Medicamentos , Desenho de Fármacos , Emulsões , Regulação Neoplásica da Expressão Gênica , Humanos , Concentração Inibidora 50 , Nanomedicina/métodos
2.
Appl Biochem Biotechnol ; 190(3): 997-1009, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31650355

RESUMO

Cancer is the consequence of abnormal cell proliferation, which leads to the formation of abnormal mass. In this study, we aimed to determine the anticancer properties of Cu(II)-Schiff base complex and low-frequency electromagnetic field, and the interaction between BSA and Cu(II) complex. Firstly, Schiff base of the Cu(II) complex in the N,N'-dipyridoxyl(1,2 diaminobenzene) was originally synthesized. Following, the breast cancer was transplanted with the TUBO cells in vivo. Then, treatment of the cancerous mice was done by low-frequency electromagnetic field and the Cu(II)-Schiff base complex. In this project, antiproliferative activity on breast cancer cells was tested by TUBO cells using MTT assay and apoptosis properties were studied by flow cytometry. The interaction between the Cu(II)-Schiff base complex and bovine serum albumin (BSA) was checked by fluorescence and UV-vis absorbance spectroscopy. Tumor tissue investigation demonstrated that the low-frequency electromagnetic field and Cu(II)-Schiff base complex induce apoptosis and inhibit tumor growth. MTT results unveiled a cytotoxic impact on breast cancer cells. Flow cytometry analysis demonstrates that the anticancer effect of Cu(II)-Schiff base complex on breast cancer cells (MCF7) was associated with the cell cycle arrest. The results of fluorescence spectra and UV-vis absorption spectra showed that the conformation of bovine serum albumin has been changed in the presence of Cu(II)-Schiff base complex. Cu(II)-Schiff base complex and low-frequency electromagnetic field have anticancer properties. The spectroscopy method indicates the binding between Cu(II)-Schiff base complex and BSA.


Assuntos
Antineoplásicos/farmacologia , Complexos de Coordenação/farmacologia , Cobre/química , Campos Eletromagnéticos , Bases de Schiff/química , Soroalbumina Bovina/química , Análise Espectral/métodos , Animais , Linhagem Celular Tumoral , Complexos de Coordenação/química , Humanos , Camundongos , Ensaios Antitumorais Modelo de Xenoenxerto
3.
J Food Biochem ; 43(8): e12956, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31368576

RESUMO

Scientists are attempting to find novel methods to overcome cancers. Nanoemulsion systems as the novel drug delivery tools have been widely used in cancer therapy. In this study, the Carum Carvi oil nanoemulsions (CCONE) were prepared and its cytotoxic activity was studied on human colon cancer HT-29 cells using MTT assay. Flow cytometry and Real-time qPCR were triggered to evaluate the nanoemulsions' apoptotic properties. The results showed a significant negative association between the HT-29 cancer cell viability and CCONE doses of treatments compared with Huvec normal cells (p value < 0.001). The IC50 values were estimated 12.5 µg/ml and 50 µg/ml for HT-29 and Huvec, respectively. Moreover, we observed that increasing concentrations of nanoemulsions significantly upregulate Caspase-3 gene expression. The results showed the CCONE is an efficient novel apoptosis inducer for human colon cancer cells without any undesirable side effects. However, further in vitro and in vivo researches are required. PRACTICAL APPLICATIONS: Cancer is a complex and usually untreatable disorder. Several types of cancer therapy strategies have been applied widely to overcome cancers. Chemotherapy has been used in various types of cancers. In most cases, not only it had not been effective on cancer cells but also been distractive within normal tissues. According to results, Carum Carvi essential oil nanoemulsions have apoptotic and cytotoxic effects on colon cancer cells (HT-29). When it comes to cancer of any kind, it's important to realize that no dietary supplement can fully treat, cure, or prevent cancer. However, there are some supplements that can potentially decrease the risk of cancer. Nanoemulsions present several advantages including the ability to incorporate hydrophilic, amphiphilic, and lipophilic excipient ingredients, high physical stability, and rapid gastrointestinal digestibility. The Carum Carvi essential oil nanoemulsion can also be applied as an effective food supplement due to its potent apoptotic activity.


Assuntos
Carum/química , Caspase 3/genética , Óleos Voláteis/química , Óleos Voláteis/farmacologia , Óleos de Plantas/química , Óleos de Plantas/farmacologia , Apoptose/efeitos dos fármacos , Caspase 3/metabolismo , Sobrevivência Celular/efeitos dos fármacos , Emulsões/química , Emulsões/farmacologia , Células HT29 , Humanos , Óleos Voláteis/síntese química , Óleos de Plantas/síntese química
4.
Breast ; 41: 107-112, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30025273

RESUMO

The breast cancer is the most common type of cancer in women. In this project, the breast cancer was transplanted in vivo with the TUBO cells. Then, the cancerous mice were treated by radiation of low frequency electromagnetic fields and injection of the Mn(II) complex of the N,N'-dipyridoxyl(1,2-diaminobenzene) Schiff base. Three different concentrations of the Mn(II) complex were used. Cytotoxicity and morphological alterations caused by the Mn(II) complex in the TUBO breast cancer cell line have been evaluated. Apoptotic properties of the Mn(II) complex was studied using the flow cytometry. The Mn(II) complex has a cytotoxic effect on cancer cells. Also, both of the Mn(II) complex and low frequency electromagnetic field induced apoptosis, which was confirmed by flow cytometry. Both of them result in considerable changes in the treated tissues such as decrease of the tumor mass, induction of apoptosis and decrease in number of the blood vessels.


Assuntos
Neoplasias da Mama/terapia , Magnetoterapia/métodos , Manganês/farmacologia , Animais , Apoptose/efeitos dos fármacos , Linhagem Celular Tumoral , Feminino , Citometria de Fluxo , Humanos , Camundongos , Piridoxal/farmacologia , Bases de Schiff/farmacologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA