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Introdução: A radiodermatite é caracterizada por lesões cutâneas decorrentes da exposição à radiação ionizante, acometendo entre 80%- 90% dos pacientes submetidos à radioterapia na região da cabeça e pescoço. Objetivo: Avaliar a efetividade do uso do creme de camomila em relação ao creme de calêndula na prevenção da radiodermatite aguda em participantes submetidos à radioterapia para câncer de cabeça e pescoço. Método: Ensaio clínico randomizado, duplo-cego, prospectivo, com análise quantitativa. Foram avaliados 23 participantes, aleatoriamente designados para o grupo que fez uso do creme de camomila (n=12) ou para o grupo do creme de calêndula (n=11). A pele no campo de irradiação foi avaliada na primeira sessão de radioterapia, a cada cinco sessões, e após 30 dias do término do tratamento, de acordo com os critérios da Radiation Therapy Oncology Group (RTOG). Resultados: Os participantes apresentaram radiodermatite em todas as avaliações, do grau 1 ao 3, exceto na primeira avaliação. O nível médio mais elevado foi observado, em ambos os grupos, na sexta avaliação (2,10±0,73 no grupo do creme de camomila e 2,37±0,51 no de calêndula). No grupo camomila, o maior grau de radiodermatite foi o 3, na quinta e sexta avaliações; enquanto, no calêndula, o grau 3 foi observado pela primeira vez na sexta avaliação, permanecendo até a oitava. Não houve diferença estatisticamente significativa nos grupos avaliados. Conclusão: Houve equivalência na efetividade do uso do creme de camomila em relação ao creme calêndula na prevenção de radiodermatites agudas em pacientes com câncer de cabeça e pescoço em radioterapia

Introduction: Radiodermatitis is characterized by skin lesions resulting from exposure to ionizing radiation, affecting between 80-90% of patients undergoing radiotherapy in the head and neck region. Objective: To evaluate the effectiveness of using chamomile cream compared with calendula cream in preventing acute radiodermatitis in participants undergoing radiotherapy for head and neck cancer. Method: Randomized, double-blind, prospective clinical trial with quantitative analysis. 23 participants randomly assigned to the group that used chamomile cream (n=12) or to the calendula cream group (n=11) were evaluated. The skin in the irradiation field was evaluated in the first radiotherapy session, every five sessions and after 30 days after the end of the treatment, according to the criteria of the Radiation Therapy Oncology Group (RTOG). Results: Participants had radiodermatitis in all the assessments, from grades 1 to 3, except in the first assessment. The highest mean level was observed in both groups in the sixth assessment (2.10±0.73 in the chamomile and 2.37±0.51 in the calendula group, respectively). In the chamomile group, the highest degree of radiodermatitis was 3, in the fifth and sixth evaluations, while in the calendula, grade 3 was observed for the first time in the sixth evaluation, remaining until the eighth. There was no statistically significant difference in the groups evaluated. Conclusion: There was equivalence in the effectiveness of the use of chamomile cream compared with calendula cream in the prevention of acute radiodermatitis in patients with head and neck cancer undergoing radiotherapy

Introducción: La radiodermatitis se caracteriza por lesiones cutáneas derivadas de la exposición a radiaciones ionizantes, que afectan entre el 80 y el 90% de los pacientes sometidos a radioterapia en la región de cabeza y cuello. Objetivo: Evaluar la efectividad del uso de la crema de manzanilla en relación con la crema de caléndula para prevenir la radiodermatitis aguda en participantes sometidos a radioterapia para el cáncer de cabeza y cuello. Método: Ensayo clínico prospectivo, aleatorizado, doble ciego con análisis cuantitativo. Se evaluaron 23 participantes, asignados aleatoriamente al grupo que usó la crema de manzanilla (n=12) o al grupo crema de caléndula (n=11). La piel en el campo de irradiación se evaluó en la primera sesión de radioterapia, cada cinco sesiones y a los 30 días de finalizado el tratamiento, según los criterios del Grupo de Oncología Radioterápica (RTOG). Resultados: Los participantes presentaron radiodermatitis en todas las evaluaciones, desde el 1º al 3º grado, excepto en la primera evaluación. El nivel medio más alto se observó, en ambos grupos, en la sexta evaluación (2,10±0,73 en el grupo manzanilla y 2,37±0,51 en el de caléndula). En el grupo manzanilla, el mayor grado de radiodermatitis fue 3, en la quinta y sexta evaluaciones, mientras que en la caléndula se observó por primera vez grado 3 en la sexta evaluación, permaneciendo hasta la octava. No hubo diferencia estadísticamente significativa en los grupos evaluados. Conclusión: Hubo equivalencia en la efectividad del uso de crema de manzanilla en relación con la crema de caléndula en la prevención de la radiodermatitis aguda en pacientes con cáncer de cabeza y cuello sometidos a radioterapia

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Objetivo: demostrar los beneficios terapéuticos del uso de una jalea de caléndula al 1% en pacientes con alveolitis. Métodos: se realizó una intervención terapéutica en el Policlínico Julián Grimau, provincia Santiago de Cuba, Cuba, entre enero y junio de 2019. Por muestreo no probabilístico se reclutó una muestra de 24 pacientes con diagnóstico de alveolitis seca o húmeda, distribuyéndose en dos grupos: A (control) y B (estudio), los cuales recibieron tratamiento convencional y jalea de caléndula al 1%, respectivamente. Se analizaron las variables: edad, sexo, tipo de alveolitis, tiempo de remisión del dolor y de cicatrización, respuesta al tratamiento (mejorado y no mejorado) y beneficios terapéuticos. Se empleó el porcentaje como medida de resumen y el test estadístico Ji al cuadrado de Independencia con un nivel de significación (a) de 0,05. Resultados: se evidenció un predominio de la alveolitis en pacientes con 19-59 años de edad (50,0%), del sexo femenino (66,7%) y del tipo húmeda (75,0%). En ambos grupos de tratamiento, el mayor porcentaje de los pacientes (17) refirió alivio del dolor a las 48 horas. En el 83,3% de los pacientes, incluidos en el grupo B, se observó menor tiempo de cicatrización. El 100% de los pacientes se categorizó como mejorado. Conclusiones: la jalea de caléndula al 1% resulta beneficiosa, dada su capacidad analgésica y cicatrizante en el tratamiento de pacientes con alveolitis.

Objective: demonstrate the therapeutic benefits of a 1 % calendula jelly in patients with alveolitis. Methods: a therapeutic intervention was carried out at the Julián Grimau Polyclinic, Santiago de Cuba province, Cuba, between January and June 2019. By non-probabilistic sampling, a sample of 24 patients with a diagnosis of dry or wet alveolitis was recruited, distributed in two groups: A (control) and B (study), who received conventional treatment and 1% calendula jelly, respectively. The variables were analyzed: age, sex, type of alveolitis, time of remission of pain and healing, response to treatment (improved and not improved) and therapeutic benefits. The percentage was used as a summary measure and the Chi-square test of Independence with a significance level (a) of 0.05. Results: a predominance of alveolitis was evidenced in patients aged 19-59 years (50.0 %), female (66.7 %) and of the wet type (75.0 %). In both treatment groups, the highest percentage of patients (17) reported pain relief at 48 hours. In 83.3% of the patients included in group B, a shorter healing time was observed. 100 % of the patients categorized as improved. Conclusions: Calendula jelly 1 % is beneficial as an analgesic and healing in the treatment of patients with alveolitis.

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Chemical mutagenesis is an efficient tool used in mutation-breeding programs to improve the vital characters of the floricultural crops. This study aimed to estimate the effects of different concentrations of two chemical mutagens; sodium azide (SA) and diethyl sulfate (DES). The vegetative growth and flowering characteristics in two generations (M1 and M2) of calendula plants were investigated. Seeds were treated with five different concentrations of SA and DES (at the same rates) of 1000, 2000, 3000, 4000, and 5000 ppm, in addition to a control treatment of 0 ppm. Results showed that lower concentrations of SA mutagen had significant effects on seed germination percentage, plant height, leaf area, plant fresh weight, flowering date, inflorescence diameter, and gas-exchange measurements in plants of both generations. Calendula plants tended to flower earlier under low mutagen concentrations (1000 ppm), whereas higher concentrations delayed flowering significantly. Positive results on seed germination, plant height, number of branches, plant fresh weight, and leaf area were observed in the M2-generation at lower concentrations of SA (1000 ppm), as well as at 4000 ppm DES on number of leaves and inflorescences. The highest total soluble protein was detected at the concentrations of 1000 ppm SA and 2000 ppm DES. DES showed higher average of acid phosphatase activity than SA. Results indicated that lower concentrations of SA and DES mutagens had positive effects on seed germination percentage, plant height, leaf area, plant fresh weight, flowering date, inflorescence diameter, and gas-exchange measurements. Thus, lower mutagen concentrations could be recommended for better floral and physio-chemical performance.

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Six different colchicine concentrations: 0, 400, 800, 1200, 1600, and 2000 ppm, in combination with four soaking time treatments (1, 2, 3, and 4 h), were selected to assess the effects on germination, vegetative growth, and flower yield components in calendula plants. The molecular diversity among the treatments was assessed using ten SRAP marker combinations. Seed soaking in colchicine significantly enhanced both the fresh and the dry shoot and root masses, flowering date, number of flowers per plant, and flower diameter. At 1200-ppm colchicine combined with a 4-h soaking time, a superior effect on seed germination was observed, whereas 800 ppm for 4 h produced the highest number of flowers and the largest flower diameter. The earliest flowering time was found at 800 ppm combined with a short soaking time (1 h), while the 4-h soaking time with 800 ppm, is recommended for growing calendula outdoors, since it enhances flower development. At the molecular level, 752 fragments were successfully amplified using the SRAP primers, with 280 genetic loci found throughout the calendula genome. The polymorphism percentage ranged from 79 to 100% and the polymorphic information content (PIC) values ranged between 0.85 and 0.97. The high number of detected loci and PIC values suggests a great power of SRAP markers in detecting mutant molecular diversity. Our results clearly show the existence of genetic variation among colchicine treated calendula plants and the clustering of the studied mutants was concordant with the colchicine concentration used.

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Marigold flower extract, a natural pigment, was used to determine its effect on carcass and skin pigmentation, immunity and growth performance of broiler chickens. Two hundred and forty 1-day-old Arbor Acres broiler chicks were randomly distributed into four treatment groups with six replicates in a randomized block design. Birds were fed basal diet for 42 d with or without supplementation of marigold flower extract at various concentrations, i.e., 0 (MG0, control), 100 (MG100), 150 (MG150) and 200 (MG200) mg/kg of feed, respectively. Feed intake and live body weight were weekly recorded. Carcass and shank color, and antibody titers against Newcastle and Influenza viruses were measured. Results showed that marigold flower extract significantly (p<0.05) improved live body weight and relative thymus weight. However, feed intake, feed conversion ratio (FCR), and spleen and bursa weights were not significantly affected. Yellowness (b*) of breast and thigh muscles increased by the dietary supplementation of marigold flower extract compared with the control diet. However, lightness (L*), redness (a*) and redness to yellowness ratio (a/b) were not influenced by the treatments. Moreover, Roche color fan scores of the shank skin were increased at market age (d 42). The results revealed that marigold extract enhanced antibody titers against Newcastle and influenza viruses. It was possible to conclude that the dietary supplementation with marigold flower extract at the rate of 200 mg/kg of feed enhanced carcass and shank color, antibody titers against ND and AI, and growth performance of broiler chickens.(AU)

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