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1.
Braz. j. biol ; 84: e257074, 2024. tab, graf, ilus
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1360211

RESUMO

The study of biologically active substances-secondary metabolites of plants that exhibit geroprotective properties is an actual and popular direction in medicine to prevent early aging. This work aims to select the cultivation parameters for obtaining in vitro cell cultures of meadowsweet containing the largest amount of biologically active substances (BAS) for their further extraction as candidate substances for geroprotectors. To specify the effectiveness of the selected cell culture cultivation parameters, biomass growth for callus and root cultures, growth index, specific growth rate, and viability for suspension cultures was carried out. The study results made it possible to select the nutrient media for the cultivation of cell cultures of meadowsweet. It has been found that the greater the antioxidant activity of the extracts, the greater the antimicrobial properties it exhibits. In this study, cell cultures in vitro and alcohol extracts from the plant Filipendula ulmaria were considered as raw materials rich in candidate substances for geroprotectors. According to the data obtained, the plant is rich in hydroxybenzoic and salicylic acids, spireoside, avicularin, and hyperoside.


O estudo de substâncias biologicamente ativas - metabólitos secundários de plantas que apresentam propriedades geroprotetoras - é uma tendência atual e popular no campo da medicina para a prevenção do envelhecimento precoce. O objetivo deste trabalho foi selecionar os parâmetros de cultivo para obtenção de culturas celulares in vitro de Ulmária contendo a maior quantidade de substâncias biologicamente ativas (SBA), para sua posterior extração como substâncias candidatas a serem geroprotetoras. Para especificar a eficácia dos parâmetros selecionados de cultivo em cultura de células, foi realizada a análise de crescimento de biomassa para culturas de calos e raízes, índice de crescimento, taxa de crescimento específica e viabilidade para culturas em suspensão. Os resultados do estudo possibilitaram a seleção do meio nutriente para o cultivo de células de Ulmária. Verificou-se que, quanto maior a atividade antioxidante dos extratos, maiores eram as propriedades antimicrobianas exibidas. Neste estudo, culturas celulares in vitro e extratos alcoólicos da planta Filipendula ulmaria foram considerados matérias-primas ricas em substâncias candidatas a serem geroprotetoras. De acordo com os dados obtidos, a planta é rica em ácidos hidroxibenzoico e salicílico, espirosídeo, avicularina e hiperosídeo.


Assuntos
Plantas Medicinais/genética , Envelhecimento , Senilidade Prematura , Antioxidantes
2.
Braz. j. biol ; 842024.
Artigo em Inglês | LILACS-Express | LILACS, VETINDEX | ID: biblio-1469371

RESUMO

Abstract The study of biologically active substances-secondary metabolites of plants that exhibit geroprotective properties is an actual and popular direction in medicine to prevent early aging. This work aims to select the cultivation parameters for obtaining in vitro cell cultures of meadowsweet containing the largest amount of biologically active substances (BAS) for their further extraction as candidate substances for geroprotectors. To specify the effectiveness of the selected cell culture cultivation parameters, biomass growth for callus and root cultures, growth index, specific growth rate, and viability for suspension cultures was carried out. The study results made it possible to select the nutrient media for the cultivation of cell cultures of meadowsweet. It has been found that the greater the antioxidant activity of the extracts, the greater the antimicrobial properties it exhibits. In this study, cell cultures in vitro and alcohol extracts from the plant Filipendula ulmaria were considered as raw materials rich in candidate substances for geroprotectors. According to the data obtained, the plant is rich in hydroxybenzoic and salicylic acids, spireoside, avicularin, and hyperoside.


Resumo O estudo de substâncias biologicamente ativas metabólitos secundários de plantas que apresentam propriedades geroprotetoras é uma tendência atual e popular no campo da medicina para a prevenção do envelhecimento precoce. O objetivo deste trabalho foi selecionar os parâmetros de cultivo para obtenção de culturas celulares in vitro de Ulmária contendo a maior quantidade de substâncias biologicamente ativas (SBA), para sua posterior extração como substâncias candidatas a serem geroprotetoras. Para especificar a eficácia dos parâmetros selecionados de cultivo em cultura de células, foi realizada a análise de crescimento de biomassa para culturas de calos e raízes, índice de crescimento, taxa de crescimento específica e viabilidade para culturas em suspensão. Os resultados do estudo possibilitaram a seleção do meio nutriente para o cultivo de células de Ulmária. Verificou-se que, quanto maior a atividade antioxidante dos extratos, maiores eram as propriedades antimicrobianas exibidas. Neste estudo, culturas celulares in vitro e extratos alcoólicos da planta Filipendula ulmaria foram considerados matérias-primas ricas em substâncias candidatas a serem geroprotetoras. De acordo com os dados obtidos, a planta é rica em ácidos hidroxibenzoico e salicílico, espirosídeo, avicularina e hiperosídeo.

3.
Braz J Biol ; 84: e257074, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35195180

RESUMO

The study of biologically active substances-secondary metabolites of plants that exhibit geroprotective properties is an actual and popular direction in medicine to prevent early aging. This work aims to select the cultivation parameters for obtaining in vitro cell cultures of meadowsweet containing the largest amount of biologically active substances (BAS) for their further extraction as candidate substances for geroprotectors. To specify the effectiveness of the selected cell culture cultivation parameters, biomass growth for callus and root cultures, growth index, specific growth rate, and viability for suspension cultures was carried out. The study results made it possible to select the nutrient media for the cultivation of cell cultures of meadowsweet. It has been found that the greater the antioxidant activity of the extracts, the greater the antimicrobial properties it exhibits. In this study, cell cultures in vitro and alcohol extracts from the plant Filipendula ulmaria were considered as raw materials rich in candidate substances for geroprotectors. According to the data obtained, the plant is rich in hydroxybenzoic and salicylic acids, spireoside, avicularin, and hyperoside.


Assuntos
Filipendula , Antioxidantes , Extratos Vegetais/farmacologia
4.
Bull Exp Biol Med ; 165(2): 256-258, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29926280

RESUMO

We analyzed the expression of galectin-1 and galectin-3 in tumor tissue in stomach and colorectal cancer with and without tissue eosinophilia. Low expression of galectin-3 was detected in all patients with malignant gastrointestinal tumors irrespective of the presence of eosinophilia. Low expression of galectin-1 was detected only in patients with gastrointestinal cancer associated with eosinophilia. Association of galectin-1 expression with eosinophilic infiltration of the tumor tissue in stomach and colorectal cancer was detected.


Assuntos
Neoplasias Colorretais/metabolismo , Eosinofilia/metabolismo , Galectina 1/metabolismo , Galectina 3/metabolismo , Idoso , Proteínas Sanguíneas , Quimiotaxia de Leucócito/fisiologia , Estudos de Coortes , Neoplasias Colorretais/complicações , Neoplasias Colorretais/patologia , Eosinofilia/complicações , Eosinofilia/patologia , Eosinófilos/metabolismo , Eosinófilos/patologia , Galectinas , Mucosa Gástrica/metabolismo , Humanos , Pessoa de Meia-Idade , Estômago/patologia , Neoplasias Gástricas/metabolismo , Neoplasias Gástricas/patologia
5.
Bull Exp Biol Med ; 164(1): 95-98, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29124536

RESUMO

A real-time PCR with hybridization and fluorescent detection was used to analyze the distribution of p53 G215C, p21A1026G, and G369C gene polymorphisms in patients with stomach cancer and healthy subjects. It was found that allele C, genotypes of CC and GC of G215C p53, and G369C p21 polymorphisms and allele A and AA and GA genotypes of A1026G p21 polymorphism are significantly associated with the risk of stomach cancer development.


Assuntos
Inibidor de Quinase Dependente de Ciclina p21/genética , Neoplasias Gástricas/genética , Proteína Supressora de Tumor p53/genética , Idoso , Estudos de Casos e Controles , Feminino , Frequência do Gene , Estudos de Associação Genética , Predisposição Genética para Doença , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , Fatores de Risco
6.
Vopr Onkol ; 62(3): 470-3, 2016.
Artigo em Russo | MEDLINE | ID: mdl-30462913

RESUMO

There were studied distribution of polymorphic variants of gene of repair of DNA XPD A751C in lung cancer depending on histological type of tumor (small cell / non-small cell lung cancer) and the prevalence of tumor process (with foci / without foci of metastasis). It was found a significant increase in the incidence of minor allele C, CC and AC genotypes of the polymorphic site of gene XPD A751C in patients with lung cancer. We estimated relative risks of lung cancer development in carriers of polymorphic variants of gene XPD A751C. The heterozygous genotype AC polymorphism of gene XPD A751C is characterized by the greatest risk of developing lung cancer with small cell histological type. Homozygous CC genotype of the polymorphic site of gene XPD A751C is associated with non-small cell lung cancer development. Statistically significant differences in the distribution of polymorphic variants of gene A751C XPD depending on spread of cancer were not received.


Assuntos
Estudos de Associação Genética , Predisposição Genética para Doença , Neoplasias Pulmonares/genética , Proteína Grupo D do Xeroderma Pigmentoso/genética , Alelos , Reparo do DNA/genética , Feminino , Genótipo , Heterozigoto , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único/genética , Fatores de Risco
7.
Vopr Onkol ; 62(4): 394-400, 2016.
Artigo em Russo | MEDLINE | ID: mdl-30474945

RESUMO

The review provides information on current literature on structural and functional features of eosinophilic granulocytes and their role in the pathogenesis of cancer. There are examined data of clinical and experimental studies about an influence of hemic and tissue eosinophilia on the course and prognosis of malignant tumors. Molecular mechanisms of action of eosinophils in tumor pathology are discussed.


Assuntos
Eosinofilia/patologia , Granuloma Eosinófilo/patologia , Granulócitos/patologia , Eosinofilia/genética , Granuloma Eosinófilo/complicações , Granuloma Eosinófilo/genética , Eosinófilos/patologia , Humanos , Interleucinas/genética
8.
Urologiia ; (2): 26-9, 2008.
Artigo em Russo | MEDLINE | ID: mdl-18572765

RESUMO

The study of polymorphic variants of GSTT1, GSTM1 and GSTP1 genes from 61 patients with prostatic cancer (PC) has shown that incidence of 0/0 genotype GSTT1 and GSTM1 in PC patients was significantly higher of that in healthy men (n = 100) (34.4 and 15% in p = 0.007 and 60.7 and 43% in p = 0.04, respectively). PC risk in carriers of a GSTT1 deletion form was 2.97, CI95%--1.3-6.84, GSTM1--2.04 in CI95% 1.02-4.1. The analysis of combinations of pathological genotypes of xenobiotic biotransformation enzymes has demonstrated that 89.8% PC patients have a mutation in one of the genes GSTT1, GSTM1 or GSTP1.


Assuntos
Glutationa S-Transferase pi/genética , Glutationa Transferase/genética , Mutação , Proteínas de Neoplasias/genética , Polimorfismo Genético , Neoplasias da Próstata/genética , Idoso , Idoso de 80 Anos ou mais , Genótipo , Glutationa S-Transferase pi/metabolismo , Glutationa Transferase/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Proteínas de Neoplasias/metabolismo , Neoplasias da Próstata/enzimologia
9.
Vopr Onkol ; 53(6): 660-3, 2007.
Artigo em Russo | MEDLINE | ID: mdl-18416133

RESUMO

Polymorphism of GSTT1 and GSTM1 variant genes of phase II biotransformation of xenobiotics was studied in 181 patients with lung cancer. Null genotype frequency in cancer patients was higher than in healthy subjects. It was still higher in metastatic cancer disseminated to the regional lymph nodes as compared with localized tumor.


Assuntos
Biomarcadores Tumorais/genética , Glutationa Transferase/genética , Neoplasias Pulmonares/genética , Polimorfismo Genético , Idoso , Estudos de Casos e Controles , Feminino , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade
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