Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 9 de 9
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Cell Biochem Funct ; 42(4): e4030, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38720663

RESUMO

Diabetes mellitus (DM) is a collection of metabolic disorder that is characterized by chronic hyperglycemia. Recent studies have demonstrated the crucial involvement of oxidative stress (OS) and inflammatory reactions in the development of DM. Curcumin (CUR), a natural compound derived from turmeric, exerts beneficial effects on diabetes mellitus through its interaction with the nuclear factor kappa B (NF-κB) pathway. Research indicates that CUR targets inflammatory mediators in diabetes, including tumor necrosis factor α (TNF-α) and interleukin-6 (IL-6), by modulating the NF-κB signaling pathway. By reducing the expression of these inflammatory factors, CUR demonstrates protective effects in DM by improving pancreatic ß-cells function, normalizing inflammatory cytokines, reducing OS and enhancing insulin sensitivity. The findings reveal that CUR administration effectively lowered blood glucose elevation, reinstated diminished serum insulin levels, and enhanced body weight in Streptozotocin -induced diabetic rats. CUR exerts its beneficial effects in management of diabetic complications through regulation of signaling pathways, such as calcium-calmodulin (CaM)-dependent protein kinase II (CaMKII), peroxisome proliferator-activated receptor gamma (PPAR-γ), NF-κB, and transforming growth factor ß1 (TGFB1). Moreover, CUR reversed the heightened expression of inflammatory cytokines (TNF-α, Interleukin-1 beta (IL-1ß), IL-6) and chemokines like MCP-1 in diabetic specimens, vindicating its anti-inflammatory potency in counteracting hyperglycemia-induced alterations. CUR diminishes OS, avert structural kidney damage linked to diabetic nephropathy, and suppress NF-κB activity. Furthermore, CUR exhibited a protective effect against diabetic cardiomyopathy, lung injury, and diabetic gastroparesis. Conclusively, the study posits that CUR could potentially offer therapeutic benefits in relieving diabetic complications through its influence on the NF-κB pathway.


Assuntos
Curcumina , Inflamação , NF-kappa B , Estresse Oxidativo , Transdução de Sinais , Curcumina/farmacologia , Curcumina/uso terapêutico , Estresse Oxidativo/efeitos dos fármacos , NF-kappa B/metabolismo , Animais , Inflamação/tratamento farmacológico , Inflamação/metabolismo , Transdução de Sinais/efeitos dos fármacos , Humanos , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/metabolismo , Ratos
2.
Pathol Res Pract ; 257: 155284, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38663179

RESUMO

The cancer cells that are not normal can grow into tumors, invade surrounding tissues, and travel to other parts of the body via the lymphatic or circulatory systems. Interleukins, a vital class of signaling proteins, facilitate cell-to-cell contact within the immune system. A type of non-coding RNA known as lncRNAs mediates its actions by regulating miRNA-mRNA roles (Interleukins). Because of their dual function in controlling the growth of tumors and altering the immune system's response to cancer cells, interleukins have been extensively studied concerning cancer. Understanding the complex relationships between interleukins, the immune system, the tumor microenvironment, and the components of interleukin signaling pathways that impact the miRNA-mRNA axis, including lncRNAs, has advanced significantly in cancer research. Due to the significant and all-encompassing influence of interleukins on the immune system and the development and advancement of cancers, lncRNAs play a crucial role in cancer research by modulating interleukins. Their diverse effects on immune system regulation, tumor growth encouragement, and tumor inhibition make them appealing candidates for potential cancer treatments and diagnostics. A deeper understanding of the relationship between the biology of interleukin and lncRNAs will likely result in more effective immunotherapy strategies and individualized cancer treatments.


Assuntos
Interleucinas , Neoplasias , RNA Longo não Codificante , Microambiente Tumoral , Animais , Humanos , Regulação Neoplásica da Expressão Gênica , Interleucinas/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Neoplasias/imunologia , Neoplasias/patologia , Neoplasias/metabolismo , Neoplasias/genética , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Transdução de Sinais/fisiologia , Microambiente Tumoral/imunologia
3.
Environ Pollut ; 348: 123745, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38499169

RESUMO

The article discusses the removal of methylene blue (MB) dye, a common cationic dye used in the textile industry, from aqueous solutions through an adsorption process. The use of porous components as adsorbents are shown to facilitate complete separation after the process is completed. The substrate was synthesized by connecting zinc copper ferrite (ZnCuFe2O4), polyethyleneimine (PEI), and Graphene Oxide (GO) sheets to MCM-48, which is a mesoporous material. The surface of MCM-48 was modified using CPTMS, which created an O-Si-Cl bridge, thereby improving the adsorption rate. The substrate was shown to have suitable sites for electrostatic interactions and creating hydrogen bonds with MB. The adsorption process from the Freundlich isotherm (R2 = 0.9224) and the pseudo-second-order diagram (R2 = 0.9927) demonstrates the adsorption of several layers of dye on the heterogeneous surface of the substrate. The synthesized substrate was also shown to have good bactericidal activity against E. coli and S. aureus bacterial strain. Furthermore, the substrate maintained its initial ability to adsorb MB dye for four consecutive cycles. The research resulted that ZnCuFe2O4@MCM-48/PEI-GO substrate has the potential for efficient and economical removal of MB dye from aqueous solutions (R = 88.82%) (qmax = 294.1176 mg. g-1), making it a promising solution for the disposal of harmful industrial waste.


Assuntos
Compostos Férricos , Grafite , Nanopartículas , Poluentes Químicos da Água , Purificação da Água , Dióxido de Silício , Polietilenoimina , Cobre , Zinco , Escherichia coli , Porosidade , Staphylococcus aureus , Antibacterianos/farmacologia , Azul de Metileno/química , Purificação da Água/métodos , Adsorção , Cinética , Poluentes Químicos da Água/análise , Concentração de Íons de Hidrogênio
4.
BMC Endocr Disord ; 23(1): 227, 2023 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-37864190

RESUMO

BACKGROUND: Recent studies have revealed some conflicting results about the health effects of caffeine. These studies are inconsistent in terms of design and population and source of consumed caffeine. In the current study, we aimed to evaluate the possible health effects of dietary caffeine intake among overweight and obese individuals. METHODS: In this cross-sectional study, 488 apparently healthy individuals with overweight and obesity were participated. Dietary intake was assessed by a Food Frequency Questionnaire (FFQ) and the amount of dietary caffeine was calculated. Body composition was determined by bioelectrical impedance analysis (BIA). Enzymatic methods were used to evaluate serum lipid, glucose, and insulin concentrations. RESULTS: Those at the highest tertile of dietary caffeine intake had lower percentage of fat mass, higher fat free mass and appetite score (P < 0.05). Also, lower total cholesterol (TC) and low density lipoprotein cholesterol (LDL-c) was observed in higher tertiles of dietary caffeine intake compared with lower tertiles. In multinomial adjusted models, those at the second tertile of dietary caffeine intake were more likely to have higher serum insulin (P = 0.04) and lower homeostatic model assessment of insulin resistance (HOMA-IR) values compared with first tertile (P = 0.03) in crude model. While, in the age, body mass index (BMI), sex, physical activity, socio-economic status (SES) and energy intake -adjusted model (Model III), those at the third tertile of dietary caffeine intake were more likely to have low serum LDL concentrations [odds ratio (OR) = 0.957; CI = 0.918-0.997; P = 0.04]. With further adjustment to dietary vegetable, fiber and grain intake, those at the third tertile of dietary caffeine intake were more likely to have low systolic blood pressure (SBP), LDL and high HDL levels compared with those at the first tertile (P < 0.05). CONCLUSION: High intakes of dietary caffeine was associated with lower LDL, SBP, insulin resistance and higher HDL concentrations among overweight and obese individuals. However, due to observational design of the study, causal inference is impossible and further studies are warranted to confirm our findings.


Assuntos
Resistência à Insulina , Sobrepeso , Humanos , Sobrepeso/epidemiologia , Cafeína , Estudos Transversais , Obesidade/complicações , Insulina , Índice de Massa Corporal , Ingestão de Alimentos
5.
Crit Rev Anal Chem ; : 1-17, 2023 Jul 22.
Artigo em Inglês | MEDLINE | ID: mdl-37480552

RESUMO

Veterinary pharmaceuticals have been recently recognized as newly emerging environmental contaminants. Indeed, because of their uncontrolled or overused disposal, we are now facing undesirable amounts of these constituents in foodstuff and its related human health concerns. In this context, developing a well-organized environmental and foodstuff screening toward antibiotic levels is of paramount importance to ensure the safety of food products as well as human health. In this case, with the development and progress of electric/photo detecting, nanomaterials, and nucleic acid aptamer technology, their incorporation-driven evolving electrochemiluminescence aptasensing strategy has presented the hopeful potentials in identifying the residual amounts of different antibiotics toward sensitivity, economy, and practicality. In this context, we reviewed the up-to-date development of ECL aptasensors with aptamers as recognition elements and nanomaterials as the active elements for quantitative sensing the residual antibiotics in foodstuff and agriculture-related matrices, dissected the unavoidable challenges, and debated the upcoming prospects.

6.
Curr Med Chem ; 2023 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-37190814

RESUMO

During the radiotherapeutic treatment of pediatric oncology patients, they would be at a latent risk of developing ionizing radiation-induced ototoxicity when the cochlea or auditory nerve is located within the radiation field. Sensorineural hearing loss (SNHL) is an irreversible late complication of radiotherapy, and its incidence depends on various factors such as the patient's hearing sensitivity, total radiation dose to the cochlea, radiotherapy fractionation regimen, age and chemoradiation. Importantly, this complication exhibits serious challenges to adult survivors of childhood cancer, as it has been linked to impairments in academic achievement, psychosocial development, independent living skills, and employment in the survivor population. Therefore, early detection and proper management can alleviate academic, speech, language, social, and psychological morbidity arising from hearing deficits. In the present review, we have addressed issues such as underlying mechanisms of radiation-induced SNHL, audiometric findings of pediatric cancer patients treated with radiotherapy, and management and protection measures against radiation-induced ototoxicity.

7.
Front Chem ; 10: 932902, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36157044

RESUMO

Efficient cobalt-metal organic framework (Co-MOF) was prepared via a controllable microwave-assisted reverse micelle synthesis route. The products were characterized by SEM image, N2 adsorption/desorption isotherm, FTIR spectrum, and TG analysis. Results showed that the products have small particle size distribution, homogenous morphology, significant surface area, and high thermal stability. The physicochemical properties of the final products were remarkable compared with other MOF samples. The newly synthesized nanostructures were used as recyclable catalysts in the synthesis of 1,4-dihydropyridine derivatives. After the confirmation of related structures, the antioxidant activity of derivatives based on the DPPH method was evaluated and the relationship between structures and antioxidant activity was observed. In addition to recyclability, the catalytic activity of Co-MOF studied in this research has remarkable effects on the synthesis of 1,4 dihydropyridine derivatives.

8.
Front Chem ; 10: 928047, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35910741

RESUMO

Novel Yttrium-metal-organic framework (Y-MOF) was synthesized under optimal conditions of microwave with a power of 20 W, the temperature of 30 degrees of centigrade, and time duration of 10 min. The products were characterized by SEM (morphology and size distribution), TGA (thermal stability), BET technique (surface area), and FTIR (characterization of the related group). The Yttrium-metal-organic framework (Y-MOF) synthesized in this study, after identifying and confirming the structure, was used as an efficient and recyclable catalyst in the synthesis of new pyrazolopyranopyrimidine derivatives. Following the study of the properties and applications of Y-MOF, its anticancer properties on breast cancer cells based on the MTT method were evaluated, and significant results were observed. In addition, the anticancer properties of the pyrazolopyranopyrimidine derivatives were investigated.

9.
Complement Ther Med ; 69: 102845, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35671889

RESUMO

OBJECTIVE: This systematic review and meta-analysis were aimed to determine the effects of grape products on liver enzymes in adults. METHODS: Databases including PubMed/Medline, Cochrane Library, ISI Web of Science, and Scopus were searched up to February 2021. Randomized clinical trials (RCTs) investigating the effect of grape products on serum concentrations of liver enzymes were included. Data were pooled using the random-effects model and weighted mean difference (WMD) was considered as the summary effect size. RESULTS: Eight RCTs enrolling 291 participants met the inclusion criteria for this meta-analysis. The overall effect illustrated no significant change in serum levels of alanine aminotransferase (ALT) (WMD: - 2.04; 95 % CI: - 5.50 to 1.42; P = 0.24; I2 = 72.5 %), and aspartate aminotransferase (AST) (WMD: - 1.40; 95 % CI: - 3.80 to 0.99; P = 0.25; I2 = 76.0 %) in intervention group compared with the control group. Subgroup analyses revealed that the effect of grape products on ALT (WMD: - 4.97; 95 % CI: - 8.73 to - 1.21; P = 0.01) and AST (WMD: - 2.89; 95 % CI: - 5.69 to - 0.08; P = 0.04) levels was significant when the intervention period was equal or more than 12 weeks. CONCLUSION: Overall, grape products had no significant effect on liver enzymes in adults. However, due to the low number of included studies, these findings must be interpreted with great caution. Larger, well-designed RCTs are still needed to further evaluate the capacity of the grape products as a complementary treatment to improve liver enzymes.


Assuntos
Vitis , Adulto , Alanina Transaminase , Aspartato Aminotransferases , Suplementos Nutricionais , Humanos , Fígado , Ensaios Clínicos Controlados Aleatórios como Assunto
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA