Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
1
2
artículo
Publicado 2010
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Objective: To determine a Croton lechleri vaginal gel preparation toxicity in rabbits. Design: Experimental study. Setting: Alberto Guzman Barron Biochemistry and Nutrition Research Center, Clinical Research Institute, Institute of Pathology, Faculty of Medicine and Pharmacy Faculty, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material: Croton lechleri resin and female white New Zealand rabbits. Methods: The animals were divided into three groups (n=5): I. Control, vehicle; II, C. lechleri 1%, and III, C. lechleri 5%; they received samples of 1 mL volume intravaginally 1 time/day for 10 consecutive days. The general clinical condition and physical appearance of the vagina and the perineum for signs of flow, erythema and edema were observed. At the end of the experiment surgical resection of the vagina of each rabbit was performed and signs of irritation, bleeding or ...
3
tesis de grado
Publicado 2018
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Evalúa la composición química, actividad antimicrobiana y antioxidante de los aceites esenciales de Croton adipatus Kunth, Croton thurifer Kunth y Croton collinus Kunth. Los aceites esenciales fueron extraídos de las hojas de las especies seleccionadas por hidrodestilación y las composiciones químicas fueron determinadas por Cromatografía de gases acoplada a espectrometría de masas (CG/EM). Las actividades antimicrobianas fueron evaluadas usando el método de difusión en agar y microdilución colorimétrica contra Staphylococcus aureus ATCC 25923, Bacillus subtilis ATCC 6633, Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 9027 y Candida albicans ATCC 10231. La actividad antioxidante se determinó mediante el método de captación de radical libre (DPPH). El aceite esencial de Croton adipatus Kunth mostró un mayor número de componentes (46), seguido por Croton collinu...
4
artículo
In recent years, interest in the elimination of “wrinkles” has motivated the cosmetic industry to carry out research based on medicinal plants that contain antioxidant, anticolagenase and antielastase properties. Croton lechleri “blood of degree” is a plant that is known for its healing property; However, this activity may give you the anti-collagenase property, which you can evaluate by several methods. The objective of this work is to evaluate the anti-collagenase activity of Croton lechleri latex “blood grade”. To carry out this evaluation, the Thing methodology was used, which is carried out, comparing the activity (absosbances) generated by the epigallocatechin pattern with the Croton lechleri latex samples at the following concentrations: 125, 250, 500 and 1000ug / mL at the end of this method, it was found that Croton lechleri latex showed anti-collagenase activity of ...
5
artículo
Objective: The purpose of this study was to determine the antibacterial activity of Croton lechleri (C. lechleri) on strains of S. mutans ATCC 35668. Methods: It was used 50%, 75% and 100% concentrations of C. lechleri, and chlorhexidine (0.12%) as a positive control and distilled water as a negative control. It was measured the inhibition halos produced around imbibed discs with each of the concentrations of C. lechleri on colonies of S. mutans which were seeded in Muller Hinton Agar. Results: 75% and 100% of C. lechleri concentration showed antibacterial activity in vitro over S. mutans, 50% concentration showed no activity. 0.12% chlorhexidine concentration showed a higher antibacterial activity in vitro than all the concentrations of C. lechleri groups evaluated. Conclusions: Croton lechleri can be a natural, accessible and low-cost alternative for prevention methods in dental caries...
6
artículo
OBJECTIVE: To determine if dragon’s blood Croton palanostigma induces gastric mucus secretion as a protective effect. MATERIAL AND METHODS: Adult male albine 200 to 250 g rats were distributed in 4 groups: (I) control with saline solution; (II) gastric croton 0,8 mL/ kg; (III) duodenal croton 0,8 mL/kg; (IV) ranitidine 50 mg/kg; 10 animals in each group. One hour later, pyloric ligation by abdominal laparatomy was performed under ethil ether anestesia and a histamine discharge was done to stimulate secretion. Stomachs were removed and at the glandular portion mucus secretion was measured by modified Corne method expressed as µg of alcian blue/mL/g of tissue. RESULTS: Mucus production by groups was: control 34,5±5,5; gastric croton 45,8±12,2; duodenal croton 50,6±13,9; ranitidine 39,0±7,1. There was significative more mucus production in the gastric and duodenal croton groups than ...
7
artículo
In recent years, interest in the elimination of “wrinkles” has motivated the cosmetic industry to carry out research based on medicinal plants that contain antioxidant, anticolagenase and antielastase properties. Croton lechleri “blood of degree” is a plant that is known for its healing property; However, this activity may give you the anti-collagenase property, which you can evaluate by several methods. The objective of this work is to evaluate the anti-collagenase activity of Croton lechleri latex “blood grade”. To carry out this evaluation, the Thing methodology was used, which is carried out, comparing the activity (absosbances) generated by the epigallocatechin pattern with the Croton lechleri latex samples at the following concentrations: 125, 250, 500 and 1000ug / mL at the end of this method, it was found that Croton lechleri latex showed anti-collagenase activity of ...
8
tesis de grado
Publicado 2017
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Evalúa de forma comparativa la actividad antibacteriana y antioxidante de los extractos etanólicos de las hojas de Croton thurifer Kunth y Croton collinus Kunth. Se realiza un screening fitoquímico preliminar de los extractos etanólicos de las hojas de Croton thurifer Kunth y Croton collinus Kunth, detectándose la presencia de flavonoides, alcaloides, saponinas y esteroides para ambas especies. La actividad antibacteriana se determina utilizando el método de microdilución colorimétrica en microplacas frente a las cepas Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 8739, Bacillus subtilis ATCC 6633 y Pseudomonas aeruginosa ATCC 27853; los resultados se evalúan mediante la determinación de la concentración mínima inhibitoria de los extractos contra las bacterias en estudio. El extracto etanólico de las hojas de Croton thurifer Kunth presenta actividad antibacteriana ...
9
tesis de grado
Publicado 2025
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El presente estudio tuvo como objetivo evaluar los efectos del coagulante/floculante natural extraído de Croton lechleri y Croton draconoides (sangre de grado) en la mejora de la calidad del agua de quebradas contaminadas, a escala de laboratorio, durante el año 2024. La investigación se desarrolló con aguas provenientes de la quebrada Córdova, caracterizadas por elevados niveles de turbidez, sólidos suspendidos y carga orgánica, especialmente durante la época de avenida. Se realizó la extracción del coagulante a partir de hojas y corteza, mediante secado, molienda y tamizado, obteniendo un producto en polvo apto para ensayos de tratamiento Los parámetros fisicoquímicos analizados incluyeron turbidez, sólidos totales disueltos, oxígeno disuelto, pH, conductividad eléctrica, demanda química de oxígeno (DQO) y demanda bioquímica de oxígeno (DBO₅). Los ensayos de jarra ...
10
artículo
Publicado 2018
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Objetivo: El propósito del presente estudio fue determinar la actividad antibacteriana de Croton lechleri (C. lechleri) sobre cepas de S. mutans ATCC 35668. Métodos: Se utilizó concentraciones al 50, 75 y 100% de C. lechleri, como control positivo a la clorhexidina 0,12% y al agua destilada como control negativo. Se midieron los halos de inhibición producidos alrededor de discos embebidos con cada una de las concentraciones de C. lechleri sobre colonias de S. mutans sembradas en Agar Muller Hinton. Resultados: Las concentraciones al 75% y 100% de C. lechleri mostraron actividad antibacteriana in vitro sobre S. mutans, la concentración al 50% no manifestó ninguna actividad. La clorhexidina al 0,12% mostró mayor actividad antibacteriana in vitro que las concentraciones de C. lechleri en los grupos de estudio evaluados. Conclusiones: Croton lechleri puede ser una alternativa natural,...
11
artículo
Publicado 2020
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The empirical use of plants for medicinal purposes is an ancient practice. The Crotongenus specifically is frequently utilized by indigenous communities in South America to treat avariety of infections. In this work, the potency of the latex coming from the Croton gossypiifolius(Euphorbiaceae) tree as antimicrobial agent was studied. Also known as “Dragon’s blood”, itwas tested over microorganisms associated to infections in humans. The bacteria utilized wereKlebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Pseudomona aeruginosa and the fungiAspergillus niger. The “Dragon’s blood” was collected directly from the cortex of the trees by makingV shaped cuts. It was then added to nutritious agar and saburoud plates, where the bacteria andfungi were grown separately for the optimum time and temperature of each species. An inhibitionof the growth of S. aureus was obse...
12
artículo
We are grateful to the staff of the abovementioned herbaria for allowing us to examine specimens from their collections. Christine Niezgoda (F) and Alfredo F. Fuentes (LPB) kindly sent us specimen images. We are grateful to Otavio M. L. da Silva for assistance with the QGIS software. ACF was supported by a CNPq research grant and the Programa de Capacitaç~ao Institucional (MPEG/ MCTIC). MIOR was supported by a mobilization scholarship from the National Fund for Scientific Development, Technological and Technological Innovation-FONDECYT, CONCYTEC (Lima, Peru), for a two-month internship at the RJB-CSIC in 2017. RR received support from the Synthesys Programme (GBTAF-2834). Three reviewers and the editors provided valuable comments and suggestions to improve earlier versions of this manuscript.
13
artículo
Publicado 2021
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Objective. To determine the effect of the Croton lechleri lyophilized extract gel on root pulp tissue of pulpotomies performed on Oryctolagus cuniculus. Methods. Thirty-two two-month-old male New Zealand rabbits race, were randomly assigned into four experimental groups: a) control, b) formocresol, c) 1% Croton lechleri and d) 2.5% Croton lechleri. Four pulpotomies were done on each animal. Clinical variables (abscesses, tooth mobility and infections) and histopathological variables (fiber formation, pro-inflammatory cell and regenerative cell number) were analyzed after 1,7,15, and 30 days. Results. No clinical signs were evident in all experimental groups evaluation at any time period. In the first day histopathological evaluation, there were abundant presence of capillaries in all control group samples and half of formocresol ones, while 1% Croton lechleri and 2.5% Croton lechleri gro...
14
tesis de grado
Croton ruizianus Müll. Arg., es una especie de importancia medicinal y bioacumuladora de metales pesados que pesar de su amplia distribución, presenta pequeñas poblaciones delimitadas en relictos con poco número de individuos y baja tasa de germinación de sus semillas, siendo uno de los problemas que posee esta especie. El objetivo de la presente investigación fue desarrollar un protocolo de micropropagación de Croton ruizianus Müll. Arg. (Euphorbiaceae) para obtener plantas sanas para posteriores estudios. Se utilizó explantes de Croton ruizianus procedentes del anexo de Sogay distrito de Yarabamba – Arequipa, y se realizarón diferentes tratamientos para la esterilización, establecimiento, multiplicación y enraizamiento in vitro. En la primera etapa de esterilización se evaluó la eficacia del hipoclorito de sodio 0.5%, el antiséptico comercial Isodine 20%, el HgCl2 0.1%...
15
artículo
Publicado 2020
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The empirical use of plants for medicinal purposes is an ancient practice. The Crotongenus specifically is frequently utilized by indigenous communities in South America to treat avariety of infections. In this work, the potency of the latex coming from the Croton gossypiifolius(Euphorbiaceae) tree as antimicrobial agent was studied. Also known as “Dragon’s blood”, itwas tested over microorganisms associated to infections in humans. The bacteria utilized wereKlebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Pseudomona aeruginosa and the fungiAspergillus niger. The “Dragon’s blood” was collected directly from the cortex of the trees by makingV shaped cuts. It was then added to nutritious agar and saburoud plates, where the bacteria andfungi were grown separately for the optimum time and temperature of each species. An inhibitionof the growth of S. aureus was obse...
16
artículo
Publicado 2019
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The present investigation had the purpose of: determining the differences in the in vitro development of buds from croton young plants of latex producers; to evaluate the response to the acclimatization of croton’s plantulas with better behavior in vitro, and to determine the chromosomal number of selected individuals of croton latex producers. The culture medium for the in vitro introduction was determined evaluating the behavior of croton draconoides in five treatments with the basic medium murashige and skoog (ms) taking into consideration that the species in the study belong to the same gender. The buds coming from croton young plants producers of wine latex had the best behavior in the selected culture medium (ms + 0,01mg/i ana + 0,1mg/i of baP and aG3 + 20 ml of coconut water) presenting an increase in height, number of leaves and percentage of survival in relationship to croton ...
17
artículo
Publicado 2019
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A inicios del año 2015 cuarenta árboles de la especie Croton lechleri fueron instalados por el Programa Inicial de Responsabilidad Forestal Molinera (PIRFM) como parte del “Centro de la Diversidad Natural y Cultural del Perú – Parque Temático Forestal” en el Vivero Forestal FCF UNALM ubicado en La Molina, Lima. A finales del 2016 la especie empezó a mostrar síntomas y signos de la plaga Paracoccus marginatus. Por su incidencia en el año 2017 se realizaron 3 evaluaciones para registrar el ataque en la plantación experimental y una evaluación el 2018 donde se registró que P. marginatus causó el 85% de mortandad en los árboles de Croton lechleri.
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artículo
Publicado 2019
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A inicios del año 2015 cuarenta árboles de la especie Croton lechleri fueron instalados por el Programa Inicial de Responsabilidad Forestal Molinera (PIRFM) como parte del “Centro de la Diversidad Natural y Cultural del Perú – Parque Temático Forestal” en el Vivero Forestal FCF UNALM ubicado en La Molina, Lima. A finales del 2016 la especie empezó a mostrar síntomas y signos de la plaga Paracoccus marginatus. Por su incidencia en el año 2017 se realizaron 3 evaluaciones para registrar el ataque en la plantación experimental y una evaluación el 2018 donde se registró que P. marginatus causó el 85% de mortandad en los árboles de Croton lechleri.
19
artículo
Publicado 2019
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Dental caries is among the ten leading causes of morbidity in the country and in our region, ending mostly in exodontia, resulting in a postexodontic wound with risks of bleeding, infections and other oral health problems. The objective research was to determine the effectiveness of croton lechleri sp in postexodontic wound healing. The methodology research carried out was a quasi-experimental study with 50 adults from a Private Dental Clinic in Huánuco, 2015. An observation guide research was used in the collection of information on post orthodontic wounds. In the inferential analysis of the results used the U Mann-Whitney Test. Results: the average healing time of the postexodontic wound in the experimental group was 18.3 days and the control group was 27.1 days. Likewise, in the experimental group, the average time of disappearance of pain, edema, erythema, bleeding and clot formatio...
20
artículo
Publicado 2019
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Objective. To determine the anti-inflammatory effectiveness of eugenol against croton lechleri in the treatment of recurrent aphthous stomatitis. Methods. This is an experimental study where 60 samples were included, divided into three study groups (G.E): G.E. 1 (croton lechleri), with 20 subjects; G.E. 2 (eugenol), with 20 subjects; and the control group (G.C), with 20 other subjects. The clinical characteristics, pain, erythema, healing time were evaluated; as well as the count of leukocytes and C-reactive protein, before and two days after the application of the treatment. The Student t-test, the Kruskal-Wallis test and the Mann-Whitney U test were used. Results. Minor canker sores were more frequent, with 93.3 %; the round shape predominated in the subjects studied, with 63.3 %; with 28.3 % in several locations; followed by the tongue, with 25 %, and the labial mucosa, with 16.7 %. P...
