Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 17 de 17
Filtrar
1.
Expert Rev Pharmacoecon Outcomes Res ; 24(4): 533-539, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38362677

RESUMO

BACKGROUND: Clinical pharmacy services are the specialized practices of pharmacists to provide pharmaceutical care. All these activities are documented as pharmacist interventions to avoid medication errors which occur during prescribing, dispensing, and administration. The purpose of this study is to conduct an economic analysis of the pharmacist interventions using integrated health system. RESEARCH DESIGN AND METHODS: A retrospective study was conducted in a tertiary care hospital. Pharmacist interventions were analyzed by an independent pharmacist. Cost-saving and cost avoidance analyses were carried out for drug-related interventions. Economic analysis was performed and tabulated both in PKR and USD. RESULTS: Out of 1330 interventions, 1250 (95%) interventions were accepted and changed the prescription upon the physician-pharmacist consultation while 71 (5%) were not accepted. Interventions related to prescribing and duplication errors were the highest of all (30 and 29% respectively). Pharmacist interventions were recorded with a 95% acceptance rate. Cost analysis showed that pharmacist interventions saved around 105,115.88 US dollars. CONCLUSION: Clinical pharmacy services provided by integrated health system are a cost saving program. The cost saved per intervention for our study is around USD 37 which is more than another similar study which quoted USD 30.35 per intervention.


Assuntos
Prestação Integrada de Cuidados de Saúde , Serviço de Farmácia Hospitalar , Humanos , Centros de Atenção Terciária , Análise Custo-Benefício , Estudos Retrospectivos , Farmacêuticos
2.
PLoS One ; 17(11): e0273857, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36383564

RESUMO

Globally, the prevalence of vit-A deficiency disorders i.e., xerophthalmia and nyctalopia is increasing especially in teenagers due to lifestyle shifts and undernutrition. This research was designed to develop carrot-supplemented tomato sauce to overcome vit-A deficiency and its related disorders. The carrot sauce was formulated with the addition of 50, 60, and 70% carrot pulp in tomato paste. The prepared sauce samples were tested for physical and biochemical changes in beta carotene (BC), lycopene, viscosity, pH, total soluble solids, titratable acidity, total plate count, and sensory parameters for 12 weeks. A non-significant effect of storage on BC, lycopene, and total soluble solids was observed. The total plate count, acidity, pH, and viscosity were influenced significantly. Sauce containing 60% of the carrot paste showed good sensory characteristics and 42.39 µg/g BC for the whole period of storage. It is concluded that carrot sauce can be used as tomato ketchup replacers to boost the overall quality of life by fighting against vit-A deficiency disorders.


Assuntos
Daucus carota , Solanum lycopersicum , Humanos , Adolescente , Licopeno , Carotenoides , Qualidade de Vida , beta Caroteno , Vitamina A
3.
F1000Res ; 11: 924, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36313542

RESUMO

Background: Drinking coffee is known to have both positive and negative aftermath on periodontal health. The current study is aiming to systematically review the impact of coffee consumption on periodontal health status. Methods: An article search was carried out in two electronic databases (PUBMED and Web of Sciences). All type of experimental and observational studies were included. The assessment of the included articles were conducted using Joanna Briggs Institute (JBI) critical appraisal tool. Data were analyzed qualitatively. Result: A total of 10 articles were included in this study. Most (5) of the studies discovered a negative correlation between coffee intake and periodontal health, while 4 other studies found the protective effect of daily coffee consumption against alveolar bone loss. Last, only one study found that coffee intake did not relate with periodontitis. Conclusion: The effect of coffee consumption on periodontal health was fragmented since coffee has complex components that may give either beneficial effects or negative impact on periodontal health.


Assuntos
Café , Periodontite , Humanos , Periodontite/prevenção & controle
4.
Front Pharmacol ; 13: 978741, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36034833

RESUMO

Jamu is an Indonesian traditional herbal medicine that has been practiced for generations. Jamu is made from various medicinal plants. Each plant has several compounds directly related to the target protein that are directly associated with a disease. A pharmacological graph can form relationships between plants, compounds, and target proteins. Research related to the prediction of Jamu formulas for some diseases has been carried out, but there are problems in finding combinations or compositions of Jamu formulas because of the increase in search space size. Some studies adopted the drug-target interaction (DTI) implemented using machine learning or deep learning to predict the DTI for discovering the Jamu formula. However, this approach raises important issues, such as imbalanced and high-dimensional dataset, overfitting, and the need for more procedures to trace compounds to their plants. This study proposes an alternative approach by implementing bipartite graph search optimization using the branch and bound algorithm to discover the combination or composition of Jamu formulas by optimizing the search on a plant-protein bipartite graph. The branch and bound technique is implemented using the search strategy of breadth first search (BrFS), Depth First Search, and Best First Search. To show the performance of the proposed method, we compared our method with a complete search algorithm, searching all nodes in the tree without pruning. In this study, we specialize in applying the proposed method to search for the Jamu formula for type II diabetes mellitus (T2DM). The result shows that the bipartite graph search with the branch and bound algorithm reduces computation time up to 40 times faster than the complete search strategy to search for a composition of plants. The binary branching strategy is the best choice, whereas the BrFS strategy is the best option in this research. In addition, the the proposed method can suggest the composition of one to four plants for the T2DM Jamu formula. For a combination of four plants, we obtain Angelica Sinensis, Citrus aurantium, Glycyrrhiza uralensis, and Mangifera indica. This approach is expected to be an alternative way to discover the Jamu formula more accurately.

5.
Microsc Res Tech ; 85(10): 3325-3338, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35751607

RESUMO

Microscopic visualization of micro-morphological characters were analyzed using a scanning electron microscopic (SEM) tool, which has proven to be very successful to analyze the pollen surface peculiarities. The significant goal of this research was to perform microscopic examination of pollen of some of the most frequently visited honeybee floral species around apiaries. Micro-morphological characterization of frequented honeybees foraged plants were discussed. A total of 15 species, belonging to 11 different families were identified for the foraging activities of honeybees, namely, Lantana camara, Jatropha integerrima, Helianthus annuus, Tecoma stans, Lagerstroemia indica, Duranta erecta, Cosmos sulphureus, Hymenocollis littoralis, Moringa oleifera, Cestrum nocturnum, Parthenium hysterophorus, Volkameria inermis, Catharanthus roseus, Malvastrum coromandelianum, and Citharexylum spinosum. The microscopic slides were prepared using the acetolysis method, and the qualitative and quantitative features were measured and described using microscopic tools. The pollen type sculpture varies from psilate scabrate to echinate and colpi from tricolpate to tetracolpate. Quantitative parameters such as polar diameter, mesocolpium distance, equatorial dimensions, aperture size, spine diameter, and exine thickness were calculated using IBM SPSS Statistics 20. The exine thickness was measured at its maximum in C. roseus (3.85 µm), whereas it was at its minimum of 0.90 µm in L. indica and D. erecta. Pollen fertility was estimated to be highest in H. annus (88%). The current research validates scanning microscopic features of pollen of the honeybee floral species, which is helpful for the accurate identification and commercializing of honey production to generate revenue for beekeepers through the exploration of bee floral diversity. RESEARCH HIGHLIGHTS: Pollen spectrum examination using microscopic imaging techniques. Variations examined through scanning microscopy in pollen ultrastructure. Micro-morphology has taxonomic value for accurate identification of honeybee flora. Authentication of Honeybee floral species for sustainable beekeeping.


Assuntos
Asteraceae , Pólen , Animais , Abelhas , Microscopia Eletrônica de Varredura , Plantas , Pólen/ultraestrutura
6.
PLoS One ; 17(4): e0265206, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35482722

RESUMO

Wild medicinal herbs have been used as folk and traditional medicines all across the world since well before recorded history. This present study was designed to test the antimicrobial activities of five different solvent extracted samples (n-hexane, n-butanol, ethyl acetate, methanol, and water) of Peganum harmala using stems and seeds. Two different strains of Gram-negative bacteria (Escherichia coli and Klebsiella pneumonia), two Gram-positive bacteria (Bacillus subtilus and Staphylococcus aureus), and one fungal strain (Candida albicans) were used. The antimicrobial activities were measured using a disc diffusion assay. Two concentrations of the extracts (1 and 2mgDisc-1) were used. Ethyl acetate fraction was found more affective among the tested solvents and showed maximum activity (zone of inhibition) against S. aureus (65.53 and 81.10%), E. coli (46.22 and 61.29%) while n-butanol and water fractions gave maximum activity against S. aureus (78.86 and 70.00%) and K. pneumonia (57.00 and 61.39%) respectively. Water fraction showed maximum activity against C. albicans (60.00 and 81.88%). In the case of the stem, Ethyl acetate again showed more activity against B. subtilus (38.57 and 42.10%) and S. aureus (36.66 and 46.66%) while n-butanol showed maximum activity against K. pneumonia (24.55 and 32.44%) and E. coli (27.93 and 37.61%). Methanol was found more effective against C. albicans (25.71 and 43.80%). Seed extracted samples were found more effective compared to the stem. Ethyl acetate, butanol, and aqueous extracted samples showed good activity against the tested microbes, so these fractions are recommended for study their mechanism of actions and isolation of bioactive metabolites responsible for antimicrobial activities. The P. harmala should be evaluated for their bioactive compounds to be used in future studies. Our objective is to provide the framework for future study on the roles of P. harmala as traditional medicines.


Assuntos
Peganum , 1-Butanol/farmacologia , Antibacterianos/farmacologia , Candida albicans , Escherichia coli , Metanol/farmacologia , Testes de Sensibilidade Microbiana , Extratos Vegetais/farmacologia , Sementes , Solventes/farmacologia , Staphylococcus aureus , Água/farmacologia
7.
Microsc Res Tech ; 85(7): 2467-2485, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35294076

RESUMO

Microscopic pollen characters from 19 species of family Asteraceae collected from different areas of the Potohar Plateau of Pakistan have been investigated using light and scanning electron microscopy. This study uses microscopic techniques to provide detailed information on pollen and its exine structure based on qualitative and quantitative characters. The present study has observed three types of pollen grains based on their apertures, that is, trizonocolporate, tetrazonocolporate, and tricolporate. Exine sculpturing is echinate in all studied taxa. Some species also exhibit Lacunae which differ in their shape and sizes. The size of the spines and the number of spines between the colpi play a vital role in differentiating the species of the same genus. Pollen fertility ranges from 94.3 to 74.19, showing that these species are well established in the study area. For the correct identification of species, a light and scanning electron microscopy was used that provides sufficient information for a taxonomist to distinguish species taxonomically. RESEARCH HIGHLIGHTS: Light and Scanning electron microscope is comparatively used to investigate the pollen characters of some species of the family Asteraceae. A scanning electron microscopy is used to study the micro-morphological characters of pollen grains. Qualitative and quantitative characters of pollen were studied.


Assuntos
Asteraceae , Pólen , Microscopia Eletrônica de Varredura , Paquistão , Pólen/ultraestrutura
8.
Microsc Res Tech ; 85(2): 789-798, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34582087

RESUMO

Due to increase in energy catastrophe and accompanying environmental issues, the search for renewable and alternative energy resources is a fiercely disputed problem in the scientific world. Biodiesel has proven to be the finest sustainable alternative to gasoline. Because of their environment-friendly character and cost-effectiveness, nonedible oil-bearing seeds could be the possible resource for biodiesel production. Therefore, the present study uses scanning electron microscopy (SEM) to investigate and identify micromorphological features of six novel, nonedible oil-bearing seeds of Verbenaceae as potential biodiesel feed stocks. Selected seeds of Verbenaceae range in size from 1 to 5 mm in width and 1.8 to 6.4 mm in length, according to light microscopic studies. The oil content of seeds ranges from14 to 19%. Seed texture, color, shape, size, periclinal and anticlinal wall patterns, and cell outline are all more variable in SEM-mediated seed ultrastructure analyses. The findings of this work imply that SEM could be a useful method for revealing hidden micromorphological features in a variety of nonedible oil-producing seeds, which could aid to future investigation, proper identification, seed categorization, and authenticity. These seeds were hard to be identified by the native people due to their resemblance in seed color and shape, so there is a need to give a detailed description of seed characters for proper identification of these plants. This work will determine the new features of the seeds, which will be helpful in near future.


Assuntos
Verbenaceae , Humanos , Microscopia Eletrônica de Varredura , Óleos de Plantas , Sementes
9.
Front Nutr ; 9: 1062616, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36618676

RESUMO

The current study focused on developing protein- and dietary fiber-enriched, micronutrient-fortified corn snacks using extrusion technology. Corn, soybean, and chickpea flour were used to develop micronutrient-fortified (Fe, Zn, I, and vitamin A, and C) extruded snacks, followed by an exploration of their nutritional traits. Soybean and chickpea were supplemented discretely (20-40/100 g) or in a combination of both (10:10, 15:15, and 20:20/100 g). According to the results, the relative proportion of the raw material composition was reflected in corn snacks' proximate composition and mineral and vitamin levels. Corn snacks with 40/100 g soy flour showed the best nutrient profile, with a maximum percent increase in protein (171.9%) and fiber (106%), as compared to the snacks developed using chickpea and/or mixed supplementation with soy and chickpea. Total dietary fiber (18.44 ± 0.34%), soluble dietary fiber (10.65 ± 0.13%), and insoluble dietary fiber (7.76 ± 0.38%) were also found to be highest in the soy-supplemented snacks (40/100 g). It was discovered that 100 g of corn snacks could provide 115-127% of the RDA for iron, 77-82% of the RDA for zinc, 90-100% of the RDA for vitamin A, and 45-50% of the RDA for vitamin C. The results for the effect of extrusion processing on amino acids showed a 2.55-45.1% reduction in essential amino acids, with cysteine and valine showing the greatest decrease and leucine and tryptophan remaining relatively stable during extrusion.

10.
Microsc Res Tech ; 85(5): 1671-1684, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-34913535

RESUMO

Biodiesel is a promising, bio-based, renewable, nontoxic, environment friendly, and alternative fuel for petroleum derived fuels which helps to reduce dependency on conventional fossil fuels. In this study, six novel, nonedible seed oil producing feedstock were explored for their potential for sustainable production of biodiesel. It is very important to correctly identify oil yielding plant species. Scanning electron microscopy (SEM) was used as reliable tool for authentic identification of oil yielding seeds. Macromorphological characters of seeds were studied with light microscopy (LM). Outcomes of LM of seeds exposed distinctive variation in seed size from 16.3 to 3.2 mm in length and 12.4 to 0.9 mm in width, shape varied from oval to triangular, and color from black to light brown. Oil content of nonedible seed ranged from 25 to 30% (w/w). Free fatty acid content of seed oil varied from 0.32 to 2.5 mg KOH/g. Moreover, ultra structural study of seeds via SEM showed variation in surface sculpturing, cell arrangement, cell shape, periclinal wall shape, margins, protuberances, and anticlinal wall shape. Surface sculpturing varied from rugged, reticulate, varrucose, papillate, and striate. Periclinal wall arrangements confirmed variation from rough, wavy, raised, depressed, smooth, and elevated whereas, anticlinal walls pattern showed variation from profuse undulating, smooth, raised, grooved, deep, curved, and depressed. It was concluded that SEM could be a latent and advanced technique in unveiling hidden micromorphological characters of nonedible oil yielding seeds which delivers valuable information to researchers and indigenous people for precise and authentic identification and recognition.


Assuntos
Biocombustíveis , Sementes , Humanos , Microscopia Eletrônica de Varredura , Óleos de Plantas , Sementes/anatomia & histologia
11.
Microsc Res Tech ; 84(4): 608-617, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33064896

RESUMO

The present study aimed to investigate the palyno-morphological features of species of family Vitaceae from Pakistan. A total of nine species, belonging to four genera were collected, pressed, identified, and then analyzed microscopically. Both quantitative and qualitative characters of the pollen grains were recorded including polar and equatorial diameter, P/E ratio, number of colpi and pores, exine thickness and shapes of the pollen in both polar and equatorial view, and exine sculpturing using Leica microscope fitted with camera Meiji Infinity 1 and then analyzed statistically using software IBM SPSS Statistics 20. The results of the present study demonstrated the variations in polar and equatorial diameter, exine thickness, P/E ratio, pollen shape, and exine sculpturing of the studied species and highlighted the significance of pollen morphology as an identification tool. The present study may contribute to better understand the classification at genus level, which will support the future phylogenetic characterization of the family.


Assuntos
Vitaceae , Microscopia Eletrônica de Varredura , Paquistão , Filogenia , Pólen
12.
Nat Prod Res ; 34(16): 2403-2406, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30600710

RESUMO

Mangrove plants are endowed with various biologically active compounds which have potent antibacterial and antioxidant properties. In present study, a bioactivity-guided fractionation for antibacterial and antioxidant active metabolites from the twigs of Avicennia officinalis collected from Kuala Selangor Nature Park, Selangor, Malaysia gave 13 major fractions. The antibacterial activity of A. officinalis fractions using well-diffusion showed strong selectivity on the Gram-positive bacteria (Staphylococcus epidermidis, S. aureus and Bacillus subtilis) with minimum inhibition concentration (MIC) values of 0.156-5.00 mg/mL. However, no antibacterial activities were observed on the Gram-negative bacteria (Vibrio cholera, Enterobacter cloacae and Escherichia coli). The active antibacterial fractions were further isolated using several chromatographic techniques to give two naphthofuranquinones, namely, avicenol C (1) and stenocarpoquinone B (2). Meanwhile, the antioxidant activity of A. officinalis fractions were evaluated using DPPH radical scavenging assay exhibited low antioxidant activities. Molecular structure of the naphthofuranquinones was elucidated using 1 D and 2 D NMR spectroscopy.


Assuntos
Antibacterianos/isolamento & purificação , Antioxidantes/isolamento & purificação , Avicennia/química , Extratos Vegetais/química , Quinonas/isolamento & purificação , Antibacterianos/farmacologia , Antioxidantes/farmacologia , Bactérias Gram-Negativas/efeitos dos fármacos , Bactérias Gram-Positivas/efeitos dos fármacos , Malásia , Testes de Sensibilidade Microbiana , Estrutura Molecular , Quinonas/farmacologia
13.
Microsc Res Tech ; 81(6): 624-629, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29528159

RESUMO

Now-a-days, plant species are consumed globally for various purposes and this increasing demand leads to adulteration due to gradually exploitation in natural resources. The major causes of adulteration may be confusion in nomenclature, unawareness of authentic sources, unavailability of authentic sources, color resemblances, deficiencies in collection procedures, and misidentification. This study aims to use the microscopic techniques such as scanning electron microscopy for the authentication of the oil yielding seeds of four important and traditionally used species Prunus persica, Prunus domestica, and Eruca sativa and Argemone Mexicana from their adulterants. All of these are versatile in usage. Locally, these four plants are adulterated badly and there is need to provide a criteria and a complete monograph for correct identification. This research may prove to be helpful for quality control and as well for future studies to explore other novel aspects of these plants.


Assuntos
Argemone/metabolismo , Brassicaceae/metabolismo , Qualidade dos Alimentos , Microscopia Eletrônica de Varredura/métodos , Óleos de Plantas/análise , Prunus domestica/metabolismo , Prunus persica/metabolismo , Sementes/anatomia & histologia
14.
Pak J Pharm Sci ; 30(5): 1529-1534, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29084669

RESUMO

Two formulations of multiple emulsion (ME-1 & ME-2) containing Hipophae rhamnoides L. oil were prepared. Along with emulsifiers (Abil EM 90, Synperonic F127), Magnesium and Zinc were used as stabilizer in ME-1 and ME-2 respectively. Both formulations were prepared using Two-Step Method and after preparation ME-1 and ME-2 were stored at different storage conditions i.e., 4°C, 25°C, 40°C, 40°C+ 75% RH for four weeks for stability evaluation. At 4°C ME-1 and ME-2 showed phase inversion and were excluded from further stability evaluation. While ME-1 and ME-2 both were stable at 25°C for a period of four weeks as no color change, phase separation and liquefaction occurred. ME-1 and ME-2 at 40°C, 40°C+ 75% RH exhibited change in color, liquefaction and phase separation. The decrease in viscosity and globule size whereas increase in electrical conductivity and pH were observed at 40°C, 40°C+ 75% RH for a period of four weeks. Multiple emulsion from Hippophae rhamnoide L. oil are unstable at refrigeration and high temperature conditions. These formulations must be placed at room temperature to increase their shelf life.


Assuntos
Hippophae/química , Óleos de Plantas/química , Administração Cutânea , Composição de Medicamentos , Estabilidade de Medicamentos , Armazenamento de Medicamentos , Condutividade Elétrica , Emulsificantes/química , Emulsões , Excipientes/química , Umidade , Sulfato de Magnésio/química , Óleos de Plantas/administração & dosagem , Óleos de Plantas/isolamento & purificação , Tecnologia Farmacêutica/métodos , Temperatura , Fatores de Tempo , Compostos de Trimetilsilil/química , Viscosidade , Sulfato de Zinco/química
15.
Int J Biol Macromol ; 103: 783-790, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28495625

RESUMO

Recently, the biosynthesis of nanoparticle attracted the attention of scientific community due to its simplicity, ease and eco-friendly nature. In the present study, Camellia Sinensis (C. Sinensis) leaves extract was employed for the synthesis of nickel nanoparticles (NiNPs). The fabricated NiNPs were characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) and X-ray diffraction techniques. The photocatalytic activity (PCA) was evaluated by degrading crystal violet (CV) dye. The NiNPs size was in the range of 43.87-48.76nm, spherical in shape and uniformly distributed with magnetization saturation of 0.073 emu/g. The NiNPs showed promising PCA under solar light irradiation. At optimized conditions, up to 99.5% CV dye degradation was achieved. Results revealed that biosynthesis can be adopted for the synthesis of NiNPs in nano-size range since it is simple, cost effective and eco-friendly in nature versus physico-chemical methods.


Assuntos
Camellia sinensis/química , Nanopartículas Metálicas/química , Nanotecnologia , Níquel/química , Processos Fotoquímicos , Extratos Vegetais/química , Catálise , Técnicas de Química Sintética , Oxirredução , Folhas de Planta/química
16.
J Cell Biochem ; 113(10): 3254-65, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22644775

RESUMO

Overactivation of c-Jun N-terminal kinase (JNK)/c-Jun signaling is a central mechanism of hepatocyte injury and death including that from oxidative stress. However, the functions of JNK and c-Jun are still unclear, and this pathway also inhibits hepatocyte death. Previous studies of menadione-induced oxidant stress demonstrated that toxicity resulted from sustained JNK/c-Jun activation as death was blocked by the c-Jun dominant negative TAM67. To further delineate the function of JNK/c-Jun signaling in hepatocyte injury from oxidant stress, the effects of direct JNK inhibition on menadione-induced death were examined. In contrast to the inhibitory effect of TAM67, pharmacological JNK inhibition by SP600125 sensitized the rat hepatocyte cell line RALA255-10G to death from menadione. SP600125 similarly sensitized mouse primary hepatocytes to menadione toxicity. Death from SP600125/menadione was c-Jun dependent as it was blocked by TAM67, but independent of c-Jun phosphorylation. Death occurred by apoptosis and necrosis and activation of the mitochondrial death pathway. Short hairpin RNA knockdowns of total JNK or JNK2 sensitized to death from menadione, whereas a jnk1 knockdown was protective. Jnk2 null mouse primary hepatocytes were also sensitized to menadione death. JNK inhibition magnified decreases in cellular ATP content and ß-oxidation induced by menadione. This effect mediated cell death as chemical inhibition of ß-oxidation also sensitized cells to death from menadione, and supplementation with the ß-oxidation substrate oleate blocked death. Components of the JNK/c-Jun signaling pathway have opposing functions in hepatocyte oxidant stress with JNK2 mediating resistance to cell death and c-Jun promoting death.


Assuntos
Hepatócitos/patologia , Sistema de Sinalização das MAP Quinases , Proteína Quinase 9 Ativada por Mitógeno/metabolismo , Vitamina K 3/toxicidade , Trifosfato de Adenosina/metabolismo , Adenoviridae/genética , Adenoviridae/metabolismo , Animais , Antracenos/farmacologia , Morte Celular , Linhagem Celular Transformada , Resistência a Medicamentos , Técnicas de Silenciamento de Genes , Hepatócitos/efeitos dos fármacos , Hepatócitos/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Proteína Quinase 9 Ativada por Mitógeno/antagonistas & inibidores , Proteína Quinase 9 Ativada por Mitógeno/genética , Ácido Oleico/farmacologia , Oxirredução , Estresse Oxidativo , Fragmentos de Peptídeos/genética , Fragmentos de Peptídeos/metabolismo , Fosforilação , Proteínas Proto-Oncogênicas c-jun/genética , Proteínas Proto-Oncogênicas c-jun/metabolismo , RNA Interferente Pequeno/genética , RNA Interferente Pequeno/metabolismo , Ratos , Espécies Reativas de Oxigênio/metabolismo
17.
Acta Pol Pharm ; 68(5): 693-701, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21928714

RESUMO

The aim of this study was to evaluate the effects of newly formulated topical cream of Calendula officinalis extract on the mechanical parameters of the skin by using the cutometer. The Cutometer 580 MPA is a device that is designed to measure the mechanical properties of the skin in response to the application of negative pressure. This non-invasive method can be useful for objective and quantitative investigation of age related changes in skin, skin elasticity, skin fatigue, skin hydration, and evaluation of the effects of cosmetic and antiaging topical products. Two creams (base and formulation) were prepared for the study. Both the creams were applied to the cheeks of 21 healthy human volunteers for a period of eight weeks. Every individual was asked to come on week 1, 2, 3, 4, 5, 6, 7, and 8 and measurements were taken by using Cutometer MPA 580 every week. Different mechanical parameters of the skin measured by the cutometer were; R0, R1, R2, R5, R6, R7, and R8. These were then evaluated statistically to measure the effects produced by these creams. Using ANOVA, and t-test it was found that R0, and R6 were significant (p <0.05) whereas R1, R2, R5, R7, R8 were insignificant (p > 0.05). The instrumental measurements produced by formulation reflected significant improvements in hydration and firmness of skin.


Assuntos
Calendula/química , Pele/efeitos dos fármacos , Adulto , Fenômenos Biomecânicos , Química Farmacêutica , Cosméticos , Elasticidade/efeitos dos fármacos , Emolientes/farmacologia , Emulsões , Humanos , Masculino , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Pele/química , Envelhecimento da Pele/efeitos dos fármacos , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA