RESUMEN

Children and adolescents with intellectual disabilities (ID) often encounter difficulties with narrative skills. Yet, there is a lack of research focusing on how to assess these skills in this population. This study offers an overview of the tools used for assessing oral narrative skills in children and adolescents with ID, addressing key questions about common assessment tools, their characteristics, and reported evidence. A systematic review was conducted of the literature published between 2010 and 2023 in the PsycINFO, ERIC, Education, and Psychology databases. An initial 1176 studies were reviewed by abstract, of which 485 were read in full text, leading to the selection and analysis of 22 studies. Most of the identified tools involve analyzing language samples obtained using wordless picture story books. Three common tools are emphasized. Studies have primarily identified inter-rater reliability and test-criterion evidence for validity. The main tools and their characteristics are discussed in depth to aid readers in discerning suitable options for research or practical applications. The importance of reporting diverse sources of evidence for validity and reliability within this population is highlighted.

RESUMEN

Alzheimer's disease is a neurodegenerative disease characterized by progressive memory loss and cognitive impairment due to a severe loss of cholinergic neurons in specific brain areas. It is the most common type of dementia in the aging population. Although many anti-acetylcholinesterase (AChE) drugs are already available on the market, their performance sometimes yields unexpected results. For this reason, research works are ongoing to find potential anti-AChE agents both from natural and synthetic sources. In this study, 90 extracts from 30 native and naturalized medicinal plants are tested by TLC and Ellman's colorimetric assay at 250, 125 and 62.5 µg/mL in order to determine the inhibitory effect on AChE. In total, 21 out of 90 extracts show high anti-AChE activity (75-100% inhibition) in a dose-dependent manner. Among them, ethanolic extract from aerial parts of O. vulgare ssp. vulgare shows an IC50 value 7.7 times lower than galantamine. This research also establishes the chemical profile of oregano extract by TLC, HPLC-DAD and LC-MS, and twenty-three compounds are identified and quantified. Dihydroxycinnamic acids and flavonoids are the most abundant ones (56.90 and 25.94%, respectively). Finally, total phenolic compounds and antioxidant properties are quantified by colorimetric methods. The total phenolic content is 207.64 ± 0.69 µg/mg of extract. The antioxidant activity is measured against two radicals, DPPH and ABTS. In both assays, the oregano extract shows high activity. The Pearson correlation matrix shows the relationship between syringic acids, a type of dihydroxybenzoic acid, and anti-AChE (r2 = -0.9864) and antioxidant activity (r2 = 0.9409 and 0.9976). In conclusion, the results of this study demonstrate promising potential new uses of these medicinal herbs for the treatment of Alzheimer's. Origanum vulgare ssp. vulgare and syringic acids, which have anti-AChE activity and beneficial antioxidant capacity, can be highlighted as potential candidates for the development of drugs for the treatment of Alzheimer's disease and other diseases characterized by a cholinergic deficit.

Asunto(s)

Enfermedad de Alzheimer , Enfermedades Neurodegenerativas , Origanum , Plantas Medicinales , Origanum/química , Inhibidores de la Colinesterasa/química , Plantas Medicinales/química , Antioxidantes/química , Enfermedad de Alzheimer/tratamiento farmacológico , Galantamina , España , Extractos Vegetales/química , Fitoquímicos/farmacología , Fitoquímicos/uso terapéutico , Flavonoides/farmacología , Flavonoides/uso terapéutico , Fenoles/química , Acetilcolinesterasa/uso terapéutico

RESUMEN

Aging-related diseases can be triggered by multiple factors such as oxidative stress. Oxidative stress is an imbalance between free radicals and antioxidants, so today, compounds capable of reducing or neutralizing free radicals are being studied for a therapeutic use. Origanum vulgare L. is a traditional medicinal plant used for a wide number of health problems due to its antimicrobial, carminative and antioxidant activities. However, when administered orally, gastrointestinal digestion can modify some of therapeutical properties. To avoid this, two different solid oral formulations have been designed for an O. vulgare extract evaluating their antioxidant behaviours in vitro and in vivo after a simulation of gastrointestinal digestion. The results showed that the divided powder has a lower antioxidant activity both in vitro and in vivo than the encapsulated extract. The quantitative difference of polyphenols found on HPLC-DAD (especially luteolin, apigenin and caffeic acid) may explain the differences in pharmacological activity. Thus, we propose that the best form to administrate O. vulgare extracts to maintain the antioxidant properties is the encapsulated form, that is, two capsules of 250 mg of a hydroalcoholic extract of O. vulgare with a minimum of 33 % of rosmarinic acid as a daily dose.

Asunto(s)

Antioxidantes/administración & dosificación , Cinamatos/administración & dosificación , Depsidos/administración & dosificación , Origanum , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/administración & dosificación , Administración Oral , Animales , Antioxidantes/aislamiento & purificación , Disponibilidad Biológica , Caenorhabditis elegans/efectos de los fármacos , Caenorhabditis elegans/metabolismo , Cápsulas , Cinamatos/aislamiento & purificación , Depsidos/aislamiento & purificación , Digestión , Composición de Medicamentos , Etanol/química , Concentración de Iones de Hidrógeno , Origanum/química , Extractos Vegetales/aislamiento & purificación , Solventes/química , Ácido Rosmarínico

RESUMEN

BACKGROUND: Missions were established in California in the eighteenth and nineteenth centuries to convert Native Americans to Christianity and enculturate them into a class of laborers for Californios (Spanish/Mexican settler). The concentration of large numbers of Native Americans at the Missions, along with the introduction of European diseases, led to serious disease problems. Medicinal supplies brought to California by the missionaries were limited in quantity. This situation resulted in an opportunity for the sharing of knowledge of medicinal plants between the Native Americans and the Mission priests. The purpose of this study is to examine the degree to which such sharing of knowledge took place and to understand factors that may have influenced the sharing of medicinal knowledge. The study also examines the sharing of medicinal knowledge between the Native Americans and the Californios following the demise of the California Missions. METHODS: Two methods were employed in the study: (1) a comparison of lists of medicinal plants used by various groups (e.g., Native American, Mission priests, Californios) prior to, during, and after the Mission period and (2) a close reading of diaries, reports, and books written by first-hand observers and modern authorities to find accounts of and identify factors influencing the exchange of medicinal information. RESULTS: A comparison of the lists of medicinal plants use by various groups indicated that only a small percentage of medicinal plants were shared by two or more groups. For example, none of the 265 taxa of species used by the Native Americans in pre-Mission times were imported into Spain for medicinal use and only 16 taxa were reported to have been used at the Missions. A larger sharing of information of medicinal plants took place in the post-Mission period when Native Americans were dispersed from the Missions and worked as laborers on the ranches of the Californios. CONCLUSIONS: Sharing of information concerning medicinal plants did occur during the Mission period, but the number of documented species was limited. A number of possible factors discouraged this exchange. These include (1) imbalance of power between the priests and the Native Americans, (2) suppression of indigenous knowledge and medical practices by the Mission priests, (3) language barriers, (4) reduction of availability of medicinal herbs around the Mission due to introduced agricultural practices, (5) desire to protect knowledge of medicinal herbs by Native American shaman, (6) administrative structure at the Missions which left little time for direct interaction between the priests and individual Native Americans, (7) loss of knowledge of herbal medicine by the Native Americans over time at the Missions, and (8) limited transportation opportunities for reciprocal the shipment of medicinal plants between California and Spain. Three possible factors were identified that contributed to a greater sharing of information between the Native Americans and the Californios in the post-Mission period. These were (1) more one-to-one interactions between the Californios and the Native Americans, (2) many of the Californios were mestizos whose mothers or grandmothers were Native Americans, and (3) lack of pressure on the part of the Californios to suppress Native American beliefs and medicinal practices.

Asunto(s)

Conocimiento , Plantas Medicinales/clasificación , Misiones Religiosas/historia , California , Historia del Siglo XVIII , Historia del Siglo XIX , Humanos , Medicina Tradicional , Misioneros , España , Indio Americano o Nativo de Alaska

RESUMEN

The characterization of compounds with antioxidant activity is of great interest due to their ability to reduce reactive oxygen species production and, therefore, prevent some age-related diseases. Its antioxidant capacity can be analyzed by different methods both in vitro and in vivo. Caenorhabditis elegans is an in vivo model widely used in ageing research. Until now, available tests analyze functional effects in the worms, so the antioxidant activity of the compound is indirectly monitored. We have developed a simple and a reliable method to quantify internal antioxidant activity in vivo. To validate this method, we analyzed an aqueous green tea extract and two other compounds with a well-known antioxidant activity and without this activity. The results obtained (EC50 green tea = 21.76 ± 1.28 µg/mL; EC50 positive control = 8.50 ± 0.33 µg/mL; negative control EC50 > 500 µg/mL) can help in the design of further in vivo experiments. Thus, our method can be used as a previous screening capable of reducing the gap between in vitro and in vivo assays.

RESUMEN

The addition of a blackthorn branch extract (Prunus spinosa L.) to a gel emulsion system containing microalgal oil was examined in order to obtain a functional ingredient (APG), for use as fat replacer in beef patties. Chromatographic analysis indicated that catechins were the major polyphenols present in the Prunus spinosa L. extract. The antioxidant capacity increased as a result of the extract addition, as shown by the comparison of the gel emulsions, with and without it (APG and AG, respectively). Beef patties containing APG as fat replacer (modified patties) had a lower fat content (5.3% versus 10.75%), doubled the antioxidant activity and the DHA content, and improved the stability against oxidation by reducing the peroxide content more than two fold when compared to control patties. In addition, instrumental color measured by the CIE L*a*b* system showed no significant difference between control and modified raw patties. Moreover, the sensory acceptability of the new formulation was confirmed by a like/dislike hedonic test.

Asunto(s)

Antioxidantes/análisis , Productos de la Carne/análisis , Extractos Vegetales/química , Aceites de Plantas/química , Animales , Bovinos , Color , Comportamiento del Consumidor , Emulsiones , Sustitutos de Grasa/química , Humanos , Microalgas/química , Oxidación-Reducción , Prunus , Porcinos

RESUMEN

Gelled emulsions with carrageenan are a novel type of emulsion that could be used as a carrier of unsaturated fatty acids in functional foods formulations. Lipid degradation through volatile compounds was studied in gelled emulsions which were high in polyunsaturated oils (sunflower or algae oil) after 49 days of storage. Aqueous Lavandula latifolia extract was tested as a natural antioxidant. Analysis of the complete volatile profile of the samples resulted in a total of 40 compounds, classified in alkanes, alkenes, aldehydes, ketones, acids, alcohols, furans, terpenes and aromatic hydrocarbons. During storage, the formation of the volatile compounds was mostly related to the oxidation of the main fatty acids of the sunflower oil (linolenic acid) and the algae oil (docosahexaenoic acid). Despite the antioxidant capacity shown by the L. latifolia extract, its influence in the oxidative stability in terms of total volatiles was only noticed in sunflower oil gels (p < 0.05), where a significant decrease in the aldehydes fraction was found.

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: This paper provides important ethnopharmacological information on plants used in neurological and mental disorders in Navarra. MATERIAL AND METHODS: Information was collected using semi-structured ethnobotanical interviews with 667 informants in 265 locations. In order to confirm the pharmacological validation of the uses claimed by the informants, monographs from Official International Agencies (ESCOP, Commission E, WHO and EMA) were reviewed. A literature review was conducted focusing on the plants that were widely used but had no published monograph. RESULTS: A total of 172 pharmaceutical uses were reported, for 46 plants and 26 families, mainly represented by Lamiaceae (15%), Asteraceae (13%), Rosaceae and Rutaceae (7%, each one), and Clusiaceae, Malvaceae, Papaveraceae and Urticaceae (4%, each one). The most frequently used parts were inflorescence (39%), flowered aerial parts (16%), and aerial parts (13%), followed by inflorescence bract (8%) and leaves (7%). Nine out of 46 plants (20%) and 81 of 172 uses (47%), have already been pharmacologically validated. The remaining 37 plants (of total 46, 80%) have been reported for neurological and mental disorders and need to be screened through standard pharmacological and clinical procedures for their activities. The most used species are Chamaemelum nobile (L.) All., Jasonia glutinosa (L.) DC., and Santolina chamaecyparissus L. ssp. squarrosa (DC.) Nyman, in all cases the administration as infusion. CONCLUSIONS: Data indicate a high degree of plants knowledge in Navarra regarding neurological and mental disorders. The present study constitutes a good basis for further phytochemical and pharmacological research of C. nobile, J. glutinosa and S. chamaecyparissus, which could be of interest in the design of new inexpensive, effective and safe drugs.

Asunto(s)

Trastornos Mentales/tratamiento farmacológico , Enfermedades del Sistema Nervioso/tratamiento farmacológico , Fitoterapia/métodos , Plantas Medicinales , Etnobotánica , Etnofarmacología , Humanos , Reproducibilidad de los Resultados , España

RESUMEN

BACKGROUND & AIMS: Women with prior gestational diabetes mellitus (GDM) have a high risk of developing type 2 diabetes mellitus (DM2) in later life. The study aim was to evaluate the efficacy of a lifestyle intervention for the prevention of glucose disorders (impaired fasting glucose, impaired glucose tolerance or DM2) in women with prior GDM. METHODS: A total of 260 women with prior GDM who presented with normal fasting plasma glucose at six to twelve weeks postpartum were randomized into two groups: a Mediterranean lifestyle intervention group (n = 130) who underwent an educational program on nutrition and a monitored physical activity program and a control group (n = 130) with a conventional follow-up. A total of 237 women completed the three-year follow-up (126 in the intervention group and 111 in the control group). Their glucose disorders rates, clinical and metabolic changes and rates of adherence to the Mediterranean lifestyle were analyzed. RESULTS: Less women in the intervention group (42.8%) developed glucose disorders at the end of the three-year follow-up period compared with the control group (56.75%), p < 0.05. The multivariate analysis indicated a reduction in the rate of glucose disorders with a BMI of less than 27 kg/m(2) (OR 0.28; 0.12-0.65; p < 0.003), low fat intake pattern (OR 0.30; 0.13-0.70; p < 0.005), low saturated fat pattern (OR 0.30; 0.13-0.69; p < 0.005) and healthy fat pattern (OR 0.34; 0.12-0.94; p < 0.04). CONCLUSIONS: Lifestyle intervention was effective for the prevention of glucose disorders in women with prior GDM. Body weight gain and an unhealthy fat intake pattern were found to be the most predictive factors for the development of glucose disorders. Current Controlled trials: ISRCTN24165302. http://www.controlled-trials.com/isrctn/pf/24165302.

Asunto(s)

Diabetes Gestacional/prevención & control , Dieta Mediterránea , Conducta Alimentaria , Intolerancia a la Glucosa/prevención & control , Estilo de Vida , Adulto , Glucemia/metabolismo , Índice de Masa Corporal , Diabetes Mellitus Tipo 2/etiología , Diabetes Mellitus Tipo 2/prevención & control , Dieta con Restricción de Grasas , Grasas de la Dieta/administración & dosificación , Ácidos Grasos/administración & dosificación , Femenino , Estudios de Seguimiento , Intolerancia a la Glucosa/complicaciones , Humanos , Masculino , Actividad Motora , Análisis Multivariante , Cooperación del Paciente , Periodo Posparto/sangre , Embarazo , Estudios Prospectivos , Factores de Riesgo , Resultado del Tratamiento , Aumento de Peso

RESUMEN

Reduced-energy and reduced-fat Bologna products enriched with ω-3 polyunsaturated fatty acids were formulated by replacing the pork back-fat by an oil-in-water emulsion containing a mixture of linseed-algae oil stabilized with a lyophilized Melissa officinalis extract. Healthier composition and lipid profile was obtained: 85 kcal/100 g, 3.6% fat, 0.6 g ALA and 0.44 g DHA per 100 g of product and ω-6/ω-3 ratio of 0.4. Technological and sensory problems were not detected in the new formulations. Reformulation did not cause oxidation problems during 32 days of storage under refrigeration. The results suggest that it is possible to obtain reduced-fat Bologna-type sausages rich in ALA and DHA and stabilized with natural antioxidants, applying the appropriate technology without significant effects on the sensory quality, yielding interesting products from a nutritional point of view.

Asunto(s)

Ácidos Docosahexaenoicos/análisis , Productos de la Carne/análisis , Melissa/química , Extractos Vegetales/química , Ácido alfa-Linolénico/análisis , Animales , Antioxidantes/química , Hidroxianisol Butilado/química , Color , Ácidos Grasos Omega-6/análisis , Humanos , Aceite de Linaza/química , Valor Nutritivo , Porcinos , Gusto , Sustancias Reactivas al Ácido Tiobarbitúrico

RESUMEN

BACKGROUND: This applied research was done in order to obtain cooked products (bologna sausages) with significantly lower amounts of energy, total fat and saturated fat and higher amounts of ω-3 fatty acids than conventional ones. Two subsequent experiments were performed. RESULTS: Experiment 1 aimed at pork back-fat reduction and enabled sausages to be obtained with 84 g kg⁻¹ fat and 1334 kcal kg⁻¹, without significant negative effects on sensory quality. Carrageenan was used as fat replacer. Experiment 2 aimed at improving the lipid profile of the 'energy-reduced' sausages previously developed, by a partial substitution of the pork back-fat with a linseed oil-in water emulsion (substitution levels: 25-100%). Using the 100% substitution level gave rise to products with 27 g kg⁻¹ α-linolenic acid, and low saturated fat content (13.5 g kg⁻¹), showing good sensory results regarding taste, smell and texture. The use of antioxidant maintained low TBARs (thiobarbituric acid reactive substances) values in all formulations. CONCLUSION: It is possible to obtain cooked meat products (bologna sausages) with low energy, low saturated fat and a high amount of ω-3 fatty acids simultaneously, applying a combination of the use of carrageenan, linseed oil emulsion and increment of water, without significant effects on sensory quality. Functional products, interesting from a nutritional standpoint, were achieved.

Asunto(s)

Dieta con Restricción de Grasas , Grasas de la Dieta/análisis , Preferencias Alimentarias , Calidad de los Alimentos , Alimentos Fortificados/análisis , Productos de la Carne/análisis , Ácido alfa-Linolénico/análisis , Animales , Carragenina/química , Fenómenos Químicos , Culinaria , Dieta Reductora , Emulsiones , Humanos , Aceite de Linaza/química , Fenómenos Mecánicos , Odorantes , Proyectos Piloto , Sensación , España , Sus scrofa , Gusto , Ácido alfa-Linolénico/administración & dosificación

RESUMEN

Melissa officinalis L. (Lamiaceae) is consumed as a traditional herbal tea in the Mediterranean region. The cytotoxic effect of the 50% ethanolic and aqueous extract, determined by the MTT and NR assays, was evaluated in vitro on Human Colon Cancer Cell Line (HCT-116), using Triton 10% as positive control. The 50% ethanolic extract showed significant differences after 72 h of treatment, reducing cell proliferation to values close to 40%, even the lowest dose tested (5 µg/ml). In the MTT assay, the same extract caused the lowest cell viability with 13% at a concentration of 1,000 µg/ml after 72 h of treatment, being a value lower than Triton 10%. The antioxidant activity was also confirmed evaluating the capacity of the extracts to scavenge ABTS and DPPH radicals, and IC(50) values were highly correlated with the total phenolic and flavonoid content. Bioassay guided fractionation led to the isolation of an anti-proliferative compound, rosmarinic acid. Its structural elucidation was performed by HPLC/DAD/ESI/MS analysis. High dose of rosmarinic acid (1,000 µg/ml) was clearly cytotoxic against HCT-116 cells, with a significant decrease in cell number since the earliest time point (24 h).

Asunto(s)

Antioxidantes/farmacología , Cinamatos/farmacología , Depsidos/farmacología , Flavonoides/farmacología , Melissa/química , Fenoles/farmacología , Extractos Vegetales/farmacología , Antioxidantes/química , Antioxidantes/aislamiento & purificación , Bebidas , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Cinamatos/química , Cinamatos/aislamiento & purificación , Depsidos/química , Depsidos/aislamiento & purificación , Flavonoides/química , Flavonoides/aislamiento & purificación , Células HCT116 , Humanos , Fenoles/química , Fenoles/aislamiento & purificación , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación , Hojas de la Planta/química , Plantas Medicinales/química , Factores de Tiempo , Ácido Rosmarínico

RESUMEN

CONTEXT: Stem and leaves infusion of Chuquiraga spinosa (R&P) Don. (Asteraceae) is used in the Peruvian traditional medicine for its anti-inflammatory properties and for the treatment of vaginal infections. OBJECTIVE: This study evaluated the antioxidant, anti-inflammatory and antifungal activities of C. spinosa for the first time. MATERIALS AND METHODS: Extracts of methanol, 50% methanol and water were obtained from C. spinosa aerial parts. Antioxidant activity of the extracts was evaluated (DPPH˙, ABTS˙(+) and superoxide radical-scavenging activity). The correlation between these results and total polyphenolic content was determined by Pearson's Correlation Coefficient. Anti-inflammatory activity of 50% methanol extract was evaluated with the rat model of carrageenan-induced acute inflammation and mouse model of TPA-induced acute inflammation. The antifungal activity of the extracts against Cladosporium cucumerinum and Candida albicans was studied by direct bioautography, and antifungal activity against phytopathogenic fungi was performed by culture in potato dextrose agar plates. RESULTS: All the extracts showed high antioxidant activity, and there was correlation between the activity and total polyphenolic compounds. As 50% methanol extract was administered orally, the paw edema in rats was reduced significantly (52.5%). This extract, by topical administration, produced a reduction of 88.07% of the edema TPA-induced in ear of mice. The aqueous and 50% methanol extracts were active against C. albicans (minimum inhibitory concentration of 2.5 and 6.25 µg, respectively). The aqueous extract showed antifungal activity against C. cucumerinum (MIC: 2.5 µg). DISCUSSION AND CONCLUSION: Preliminary phytochemical screening and the analysis of the three extracts by high-performance liquid chromatography diode-array detection showed the majority compounds are flavonoids and phenolic acid derivatives. These compounds may be responsible of the radical-scavenging activity of these extracts as well as responsible of anti-inflammatory effect in vivo of 50% methanol extract. Several authors have demonstrated the antioxidant and anti-inflammatory properties of some flavonoids and phenolic acids. The antifungal activity of the extracts obtained from aerial parts of C. spinosa has been investigated here for the first time. Other studies are necessary to determine the mechanism of action and to identify the bioactive compounds of this plant.

Asunto(s)

Antiinflamatorios/uso terapéutico , Antifúngicos/farmacología , Antioxidantes/farmacología , Asteraceae/química , Inflamación/tratamiento farmacológico , Fitoterapia/métodos , Extractos Vegetales/uso terapéutico , Animales , Antiinflamatorios/química , Antiinflamatorios/farmacología , Antifúngicos/química , Antioxidantes/química , Candida albicans/efectos de los fármacos , Carragenina , Cladosporium/efectos de los fármacos , Modelos Animales de Enfermedad , Evaluación Preclínica de Medicamentos , Flavonoides/análisis , Flavonoides/farmacología , Inflamación/inducido químicamente , Masculino , Medicina Tradicional , Metanol/química , Ratones , Perú , Fenoles/análisis , Fenoles/farmacología , Componentes Aéreos de las Plantas/química , Extractos Vegetales/química , Extractos Vegetales/farmacología , Polifenoles , Ratas , Ratas Wistar , Acetato de Tetradecanoilforbol , Agua/química

RESUMEN

A new formulation of bologna-type sausage enriched in ω-3 polyunsaturated fatty acids (PUFA) (8.75% linseed oil) was developed, using a lyophilized aqueous-ethanolic extract of Melissa officinalis. A comparison with the effectiveness of butylhydroxy anisole (BHA) synthetic antioxidant to decrease the oxidation of PUFAs was performed. The formulation increased the ω-3 PUFAs content, especially α-linolenic acid, decreasing significantly the ω-6/ω-3 ratio from 17.3 to 1.9, and also the Atherogenic Index and Thrombogenic Index (0.38-0.31 and 1.03-0.54, respectively). Modified sausages with BHA and Melissa extract showed significantly lower peroxides value (2.62 and 6.11 meq O2/kg) and thiobarbituric acid value (0.26 and 0.27 mg malondialdehyde/kg) and higher antioxidant capacity (hydrophilic fraction ABTS: 0.45 and 0.74 meq Trolox/g product; lipofilic fraction ABTS: 0.44 and 0.37 meq Trolox/g product) than those without these ingredients (16.49 meq O2/kg, 2.08 mg malondialdehyde /kg, 0.26 and 0.27 meq Trolox/g product, respectively). Sensorial tests showed that acceptability of the new formulations was similar to control products.

Asunto(s)

Productos de la Carne/análisis , Melissa/química , Extractos Vegetales/química , Ácido alfa-Linolénico/metabolismo , Animales , Antioxidantes/química , Aditivos Alimentarios/metabolismo , Manipulación de Alimentos , Liofilización/métodos , Aceite de Linaza/química , Oxidación-Reducción , Porcinos , Tiobarbitúricos/análisis , Ácido alfa-Linolénico/análisis

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: Anagallis arvensis and Anagallis foemina are traditionally used in Navarra (Spain) for dermatological purposes regarding wound healing properties. In some cases they are also used to threat internal infections although they are known to be toxic at high doses. AIM OF STUDY: Due to lack of studies, we decided to evaluate the potential of the plants as wound healing remedies measuring antimicrobial and anti-inflammatory properties using in vitro procedures. MATERIALS AND METHODS: Antimicrobial effects were studied against four bacteria and one fungus. Anti-inflammatory properties were measured in terms of COX-1 and -2 inhibition as well as superoxide radical scavenging capacity. RESULTS: Both species exerted antimicrobial and anti-inflammatory effects. The methanolic extract obtained from Anagallis arvensis seemed to produce the highest inhibition in Candida albicans (MIC=0.31 mg/ml). Inhibition of COX-1 and -2 was also stronger for methanolic extracts whereas aqueous were revealed as better free radical scavengers. CONCLUSIONS: The study reveals that both species possess antimicrobial and anti-inflammatory activities related to their ethnomedicinal uses.

Asunto(s)

Anagallis/química , Extractos Vegetales/farmacología , Cicatrización de Heridas/efectos de los fármacos , Antiinfecciosos/farmacología , Bacterias/efectos de los fármacos , Candida albicans/efectos de los fármacos , Cromatografía en Capa Delgada , Depuradores de Radicales Libres/farmacología , Pruebas de Sensibilidad Microbiana , España

RESUMEN

Tea is a popular beverage whose consumption is associated with prevention of certain disorders. The objective of the study was to investigate the potential neuroprotective effect of white tea extract (WTE) on hydrogen peroxide induced toxicity in PC12 cells. Cells were treated with various doses of WTE (10-250 µg/ml) before exposition to 250 µM hydrogen peroxide and cell survival was determined through the MTT and LDH assays. Oxidative stress was quantified in the cells after treatments as intracellular reactive oxygen species (ROS) production and the antioxidant activity of the extract was assessed in a cell free system in terms of free radical scavenging capacity. Results showed that WTE has a significant protective effect in the PC12 cell line against hydrogen peroxide as cell survival was significantly superior in WTE-treated cells compared to hydrogen peroxide-treated cells. A reduction on intracellular oxidative stress as well as radical scavenging properties were produced by WTE. Results suggest that WTE protects PC12 cells against H(2)O(2)-induced toxicity, and that an antioxidant mechanism through ROS scavenging may be in part responsible for cells neuroprotection.

Asunto(s)

Antioxidantes/farmacología , Peróxido de Hidrógeno/toxicidad , Fármacos Neuroprotectores/farmacología , Estrés Oxidativo/efectos de los fármacos , Té/química , Animales , Compuestos de Bifenilo , Camellia sinensis/química , Supervivencia Celular/efectos de los fármacos , Células PC12 , Picratos , Ratas , Especies Reactivas de Oxígeno/metabolismo

RESUMEN

AIM OF THE STUDY: To collect, analyze and evaluate the ethnopharmacologic knowledge in Nor-Yauyos in order to protect it. This paper reports the results of an ethnopharmacological survey on the uses of medicinal plants by inhabitants of the Andean region Nor-Yauyos, Peru. In this region one surviving ethnic group, the Jaqaru-Quichuas, has been identified. METHODOLOGY: Field work was concluded between October 1999 and March 2000, using semi-structured questionnaire and participant observation as well as transects walks in wild herbal plant collection. Interviews with 68 informants (mean age: 54; 100% men, 0% women) were performed in 12 farmers' communities: Huancaya, Vilca, Vitis, Miraflores, Piños, Carania, San Lorenzo De Alis, Santa Rosa De Tinco, Tomás, Huancachi, Laraos and Huantán. RESULTS: 63 species of plants belonging to 29 families were reported. More than a half of reported plants were native, endemic of the studied area. Leaves and their mixtures were the most (67.26%) commonly used plant part. Most of the remedies were prepared in infusion, and 90.08% were administered orally. Most treated disorders were the gastrointestinal (18.59%) and respiratory ones (18.22%). CONCLUSIONS: 6 species (9.52%) without pharmacological references in international scientific literature, 21 species (33.33%) with 1-2 references, 16 species (25.40%) with 3-6 references, and 20 species (31.75%) that have been already widely studied were found.

Asunto(s)

Agricultura , Medicina Tradicional , Fitoterapia , Plantas Medicinales , Anciano , Recolección de Datos , Etnobotánica , Etnofarmacología , Flores , Humanos , Masculino , Persona de Mediana Edad , Perú , Corteza de la Planta , Extractos Vegetales , Hojas de la Planta , Raíces de Plantas , Tallos de la Planta , Rizoma , Encuestas y Cuestionarios

RESUMEN

The present study was conducted to evaluate the antioxidant and anti-inflammatory activities of Jungia paniculata (DC.) A. Gray (Asteraceae), used traditionally in Peru. The dry leaves were extracted with methanol, 50% methanol, and water. The anti-inflammatory activity of this plant was studied using in vitro (nitric oxide production in RAW 264.7 macrophages and sPLA(2) inhibition assay) and in vivo (carrageenan-induced paw edema in rats and TPA-induced ear edema in mice) model systems. The antioxidant activity of extracts was studied using three in vitro model systems (DPPH(*) radical-scavenging assay, ABTS(*+) assay, and superoxide radical-scavenging activity). The results have been correlated with total phenolics and total flavonoids contents. In the NO test of the extracts of Jungia paniculata, no significant cytotoxicities were observed at the concentrations determined by MTT assay. Only the MeOH50 extract of Jungia paniculata significantly inhibited PLA(2) enzyme activity (82.3 +/- 2.6%). At 3 h, the 50% methanol extract of Jungia paniculata at an oral dose of 500 mg/kg showed significant suppression of carrageenan-induced rat paw edema (36.36%). The same extract induced a 93.99% reduction in TPA-induced edema in topical administration. The extracts exhibited a high antioxidant activity and contained high total levels of polyphenols and flavonoids. There was a significant linear correlation between total phenolics and flavonoids contents and antioxidant activity in the three models used. In conclusion, Jungia paniculata possesses anti-inflammatory and antioxidant properties, which confirm the use of this plant in folk medicine as a topical anti-inflammatory herbal.

Asunto(s)

Antiinflamatorios no Esteroideos/uso terapéutico , Antioxidantes/uso terapéutico , Asteraceae , Extractos Vegetales/uso terapéutico , Animales , Antiinflamatorios no Esteroideos/aislamiento & purificación , Antiinflamatorios no Esteroideos/farmacología , Antioxidantes/aislamiento & purificación , Antioxidantes/farmacología , Células Cultivadas , Edema/tratamiento farmacológico , Edema/metabolismo , Edema/patología , Macrófagos/efectos de los fármacos , Macrófagos/metabolismo , Masculino , Ratones , Extractos Vegetales/aislamiento & purificación , Extractos Vegetales/farmacología , Hojas de la Planta , Ratas , Ratas Wistar

RESUMEN

We present the case of a 77-year-old man with oral hemorrhage and blood clots, with no cough or vomiting. A varicose lesion in the valleculae was established as the source of bleeding. The condition of the patient was haemodynamically unstable. The bleeding was successfully controlled through suture and diathermy. From that time, there have been no further episodes of bleeding.

Asunto(s)

Epiglotis/irrigación sanguínea , Várices/complicaciones , Anciano , Hemoptisis/etiología , Humanos , Masculino , Várices/diagnóstico , Várices/cirugía

RESUMEN

A new formulation of dry fermented sausage, including ingredients that improve the nutritional and health benefits of this type of product is presented. Se yeast (2g/kg), iodized salt (26g/kg), linseed:algae (3:2) emulsion (62.5g/kg), and lyophilized water extract of Melissa officinalis L. as a source of natural antioxidants (686mg/kg), yielded dry fermented sausages with technological and sensory properties similar to traditional ones. From the nutritional standpoint, a 50g portion of this product would give 100% of the recommended daily intake for Se, 70% of DRI for iodine, and 40% and 100% of the reference intake for alpha-linolenic and EPA+DHA, respectively. The omega-6/omega-3 ratio decreased from 15.7 in the control product to 1.96 in the modified one. Despite the high PUFA content, no oxidation was detected by TBARS (<0.15mgMDA/kg) and volatile compounds, showing the effectiveness of the natural antioxidants from M. officinalis. The modified formulation presented good acceptability for panelists with similar appearance, odor, taste and juiciness as the control products.

Asunto(s)

Antioxidantes/química , Ácidos Grasos Omega-3/química , Yodo/química , Productos de la Carne/análisis , Melissa/química , Selenio/química , Animales , Fermentación , Manipulación de Alimentos , Extractos Vegetales/química , Porcinos