“…The accommodation of the nanoparticles on the surface of the fibers can be observed, and some authors have observed this same behavior [16]. Also, the main functional groups present in the reducing agent are recognized [1], which makes it possible to obtain silver nanoparticles with average sizes of 16.04 nm.…”
Section: Discussionmentioning
confidence: 77%
“…The plant, commonly named as Mexican arnica has been traditionally used for its antimicrobial activity, antifungal, cytotoxic and antioxidative properties, leading the World Health Organization (WHO) to recognize its use in medicine. This species has also been used to treat dental diseases and gastrointestinal disorders [1][2][3][4][5][6].…”
Silver nanoparticles were synthesized through a green method, using Heterotheca inuloides as a bioreducing agent. Moreover, catgut suture threads were decorated with those biogenic silver nanoparticles, and their antibacterial activity versus highly resistant pathogenic microorganisms was evaluated. The principles of green chemistry and nanotechnology allow us to obtain advanced materials, such as suture threads, which can reduce or avoid the prevalence of infectious processes in the medical field. Mexican medicinal plants, such as H. inuloides, represent an adequate alternative for biosynthesis; this plant species is known for its medicinal benefits and its antibacterial activity, and for that reason, it is being used in folk medicine.
“…The accommodation of the nanoparticles on the surface of the fibers can be observed, and some authors have observed this same behavior [16]. Also, the main functional groups present in the reducing agent are recognized [1], which makes it possible to obtain silver nanoparticles with average sizes of 16.04 nm.…”
Section: Discussionmentioning
confidence: 77%
“…The plant, commonly named as Mexican arnica has been traditionally used for its antimicrobial activity, antifungal, cytotoxic and antioxidative properties, leading the World Health Organization (WHO) to recognize its use in medicine. This species has also been used to treat dental diseases and gastrointestinal disorders [1][2][3][4][5][6].…”
Silver nanoparticles were synthesized through a green method, using Heterotheca inuloides as a bioreducing agent. Moreover, catgut suture threads were decorated with those biogenic silver nanoparticles, and their antibacterial activity versus highly resistant pathogenic microorganisms was evaluated. The principles of green chemistry and nanotechnology allow us to obtain advanced materials, such as suture threads, which can reduce or avoid the prevalence of infectious processes in the medical field. Mexican medicinal plants, such as H. inuloides, represent an adequate alternative for biosynthesis; this plant species is known for its medicinal benefits and its antibacterial activity, and for that reason, it is being used in folk medicine.
“…Los resultados de la capacidad antioxidante en las plantas elicitadas a una concentración de 1 mM en dos ocasiones, presentaron un incremento significativo cuando las plantas son cultivadas en campo y regadas con agua residual acuícola y en las plantas cultivadas en invernadero, regadas con solución nutritiva. De acuerdo con Rodríguez et al (2017), Heterotheca inuloides contiene una gran variedad de sesquiterpenos, flavonoides y terpenos, compuestos que están presentes en la planta de acuerdo a la edad, tiempo de floración e incluso de acuerdo a la región geográfica de origen. Por ejemplo, el cadaleno y el 4-metoxiisocadaleno, son compuestos que están ausentes en ramas jóvenes de la planta.…”
En la actualidad, Heterotheca inuloides o árnica para su nombre común, ha sido utilizada por su actividad anti inflamatoria, además, esta planta tiene otras aplicaciones como tratamiento contra el reumatismo, desordenes gastrointestinales, entre otros. Estas propiedades terapéuticas, son debido a metabolitos secundarios como los fenoles y flavonoides. La concentración de estos compuestos puede ser influenciada por estrés biótico o abiótico, en donde las condiciones de cultivo como la humedad relativa, la temperatura del ambiente e incluso el tipo de riego, representan un estrés abiótico. Es por esto que el objetivo de este trabajo es comparar diferentes condiciones de cultivo sobre la producción de fenoles, flavonoides totales y su capacidad antioxidante en el árnica (Heterotheca inuloides). Para cumplir con este objetivo se obtuvieron las plantas del árnica de manera comercial, colocándose 14 plantas dentro de un invernadero y 14 plantas en cultivo a cielo abierto. Además, cada uno de estos sistemas de cultivo tuvo dos tipos de sistemas de riego, el primero de agua con solución nutritiva y el segundo con agua residual acuícola. También, se elicitó con ácido salicílico a las concentraciones 0.0 mM, 0.5 mM y 1 mM, en dos ocasiones cada 14 días. Se determinó la concentración de fenoles, flavonoides totales y la capacidad antioxidante antes de cada elicitación. Los compuestos fenólicos máximos se presentaron en las plantas cultivadas en campo, regadas con solución nutritiva y elicitadas a 0.5 mM. Los flavonoides totales y la actividad antioxidante se presentaron en las plantas en invernadero, regadas con solución nutritiva, sin efecto sobre la elicitación. De acuerdo con algunos de los resultados obtenidos sé que concluye en que las condiciones de cultivo para la producción de fenoles no son diferentes para la producción de flavonoides y la capacidad antioxidante de dichos compuestos.
“…Albahacar abundante / vara mal aire, cólico menstrual Ocimum basilicum (Ghafari et al, 2018;Rodrigues et al, 2016) 5. Árnica poco / semilla lavar las heridas, desinflamar, artritis y cicatrizar Arnica montana / Heterotheca inuloides (Hostanska, Rostock, Melzer, Baumgartner, & Saller, 2012;Rodríguez-Chávez et al, 2017) 6. Asoñate abundante / vara mal de aire y limpias Brickellia veronicifolia Kunth (UNAM, 2009b).…”
Cuetzalan del Progreso, Puebla, were collected, aqueous and hydroalcoholic extracts were produced and their capacity to inhibit both the proliferation and tumor growth was evaluated in vitro using the human cervical cancer SiHa cell line. Two types of assays were performed: a) Inhibition of cell proliferation and b) Tumor size reduction in vitro. Hydroalcoholic extracts of all the plants and the aqueous extract of S. edule and T. alba inhibited cell proliferation. S. edule hydroalcoholic extract of aerial parts showed the highest inhibitory activity at the smallest concentrations with IC 50 of 16.5 µg/mL. All hydroalcoholic extracts and the aqueous extract of T. alba reduced the size of tumors formed in vitro. The hydroalcoholic extract of V. patens showed the highest inhibitory activity 40.5% at 1 µg/mL. Contradictory results were observed with V. patens extracts, the aqueous extracts increased tumor size, whereas the hydroalcoholic extract showed the highest inhibitory activity.
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