Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 10 de 10
Filter
Add filters








Year range
1.
Acta cir. bras ; 33(5): 431-438, May 2018. tab, graf
Article in English | LILACS | ID: biblio-949342

ABSTRACT

Abstract Purpose: To evaluate the effects of this thymol-rich oil in the proliferation of human adipose tissue-derived stem cells. Methods: Stem cells were isolated from human adipose tissue by liposuction. After the first passage, cells were cultivated in triplicate for three days in control medium and medium supplemented with three oil samples (1.0 μg/mL, 5.0 μg/mL, and 25.0 μg/mL). Cells were analyzed by the MTT assay at passage 1 (P1), and cell proliferation of control and 1 μg/mL groups was determined with a hemocytometer at P2 and P3. Results: Viability of the essential oil-treated cells was significantly higher than the control group at P1 (p = 0.0008). The treatment with the oil, at a concentration of 1 µg/mL, led to increases of 24.8% at P1 and 43.0% at P3 in the rate of cell proliferation compared with control cells. Conclusion: Supplementing culture medium with essential oil of Lippia origanoides increased cell proliferation, especially at later passages.


Subject(s)
Humans , Adult , Thymol/pharmacology , Plant Oils/pharmacology , Oils, Volatile/pharmacology , Lippia/chemistry , Cell Proliferation/drug effects , Antioxidants/pharmacology , Stem Cells/drug effects , Plant Oils/chemistry , Oils, Volatile/chemistry , Lipectomy , Adipose Tissue/cytology , Culture Media
2.
Br J Med Med Res ; 2016; 15(12):1-10
Article in English | IMSEAR | ID: sea-183203

ABSTRACT

Aims and Study Design: Piper aduncum L. is a Brazilian plant with many biological properties attributed to its dillapiole-rich essential oil. Despite the development of antibiotics, bacterial and fungal infections are still a public health issue in the medical field. This study measured the antimicrobial activity of the dillapiole-rich essential oil of P. aduncum against pathogenic skin microorganisms. Place of Study: Faculty of Pharmacy and Graduate Program in Pharmaceutical Science, Federal University of Pará, Brazil. This work was performed in 2014. Methodology: Gas Chromatography (GC) and Gas Cromatography-Mass spectrometry (GC-MS) have analyzed the oil and its dillapiole-rich fraction. The determination of Minimum Inhibitory Concentration (MIC) and Minimum fungicidal concentration (MFC) values was carried out by microdilution method and counting of formed colonies. Results: For the strains of Trichophyton mentagrophytes (ATCC 9533 and clinical isolate), the oil and its dillapiole-rich fraction exhibited MIC values of 500 μg/ml while the MFC values were 1,500 μg/ml for the oil and 1,000 μg/ml for the fraction rich in dillapiole. For clinical isolates of T. rubrum and Epidermophyton floccosum, MIC values of 500 μg/ml and MFC 1,500 μg/ml were equal for the oil and the dillapiole-rich fraction, respectively. For clinical isolates of Microsporum canis and M. gypseum, the MIC and MFC values were 250 μg/ml and 500 μg/ml, respectively. For strains of Aspergillus fumigatus (ATCC 40152 and clinical isolate), the oil and its dillapiole-rich fraction have shown the same MIC value of 3.9 μg/ml while the MFC values were 7.8 μg/ml for the strain ATCC 40152, and 15.6 μg/ml for the clinical isolate. The oil and dillapiole-rich fraction did not show antibacterial activity against the strain of Staphylococcus aureus ATCC 6538 and its clinical isolate Conclusion: The dillapiole-rich essential oil of P. aduncum and its dillapiole-rich fraction demonstrates significant antifungal activity against dermatophytes, filamentous fungi and potent antifungal activity against non-dermatophyte filamentous fungi.

3.
Bol. latinoam. Caribe plantas med. aromát ; 13(6): 517-526, nov.2014. ilus, tab
Article in English | LILACS | ID: lil-795822

ABSTRACT

The study aimed to evaluate the bactericidal activity of oil essential and dillapiole from P. aduncum against standard and multidrug-resistant strains of Staphylococcus spp. The oil showed antimicrobial action against these strains, but better results were obtained for the standards strains of S. epidermidis and S. aureus, with MIC of 250 and 500 ug/mL, respectively. Dillapiolle was less effective than the oil against the same standard and multi-drug resistant strains (MIC =1000 ug/mL). However, when dillapiolle was tested in combination with myristicin, another component of the oil, it increased its bactericidal activity and showed a synergistic action...


El objetivo del estudio fue evaluar la actividad bactericida de los aceites esenciales y dillapiole de P. aduncum contra cepas estándar y multirresistentes de Staphylococcus spp. El aceite mostró acción antimicrobiana frente a estas cepas, pero se obtuvo mejores resultados para las cepas de S. epidermidis y S. aureus, con MIC de 250 y 500 ug/ml, respectivamente. Dillapiolle fue menos eficaz que el aceite contra cepas estándar y multirresistentes (MIC = 1000 ug/ml). Sin embargo, cuando dillapiolle fue probado en combinación con la miristicina, otro componente del aceite, que aumentó su actividad bactericida y mostró una acción sinérgica...


Subject(s)
Humans , Oils, Volatile/pharmacology , Anti-Bacterial Agents/pharmacology , Plant Extracts/pharmacology , Piper/chemistry , Allyl Compounds/pharmacology , Benzyl Compounds/pharmacology , Drug Resistance, Multiple, Fungal , Monoterpenes/pharmacology , Staphylococcus
4.
Rev. bras. farmacogn ; 21(1)jan.-fev. 2011. graf, tab
Article in English | LILACS | ID: lil-580343

ABSTRACT

The leaves and thin branches of Lippia grandis Schauer, Verbenaceae, are used for flavoring of food in the Brazilian Amazon, as substitute for oregano. In this study the constituents of the essential oil were identified and the antioxidant capacity and larvicidal activity of the oil and methanol extract and its sub-fractions were evaluated. A sensory evaluation was determined in view of absence of toxicity. The oil showed a yield of 2.1 percent and its main constituents were thymol (45.8 percent), p-cymene (14.3 percent), γ-terpinene (10.5 percent), carvacrol (9.9 percent) and thymol methyl ether (4.8 percent), totalizing 85 percent. The DPPH radical scavenging activity showed values for the EC50 between 9.0 and 130.5 µg mL-1 and the TEAC/ABTS values varied from 131.1 to 336.0 mg TE/g, indicating significant antioxidant activity for the plant. The total phenolic content ranged from 223.0 to 761.4 mg GAE/g, contributing to the antioxidant activity observed. The crude extracts inhibited the bleaching of β-carotene and the oil showed the greatest inhibition (42.5 percent). The oil (LgO, 7.6±2.4 µg mL-1) showed strong larvicidal activity against the brine shrimp bioassay. The sensory evaluation was highly satisfactory in comparison to oregano. The results are very promising for the use of L. grandis in seasoning and antioxidant products.

5.
Rev. bras. farmacogn ; 19(1b): 230-235, Jan.-Mar. 2009. tab
Article in English | LILACS | ID: lil-523088

ABSTRACT

O óleo essencial das folhas e ramos finos frescos e secos de Hyptis crenata forneceu os seguintes rendimentos, 1,4 por cento e 0,9 por cento. Os constituintes voláteis principais foram ±-pineno (22,0 por cento; 19,5 por cento), 1,8-cineol (17,6 por cento; 23,2 por cento), ²-pineno (17,0 por cento: 13,8 por cento), cânfora (4,7 por cento; 11,6 por cento), limoneno (5,4 por cento; 4,4 por cento) e ³-terpineno (3,5 por cento; 2,4 por cento), totalizando mais de 70 por cento nos óleos. A atividade de seqüestro do radical DPPH para o extrato metanólico (CE50, 16,7 + 0,4 µg/mL) foi comparável ao do BHT (19,8 ± 0,5 µg/mL) mostrando uma significante atividade antioxidante. Os óleos apresentaram baixa atividade. O teor de fenólicos totais (TP, 373,0 + 15,9 mg GAE/g) e equivalente trolox (TEAC, 226,8 + 0,5 mg TE/g) confirmaram a atividade antioxidante do extrato metanólico, que pode ser atribuída à presença de compostos fenólicos polares. No teste com larvas de camarão as concentrações letais para o óleo e extrato metanólico foram 6,7 + 0,2 µg/mL e 13,0 + 3,7 µg/mL, respectivamente, fornecendo importante evidência de suas atividade biológicas.


The essential oils of fresh and dried leaves and fine stems of Hyptis crenata furnished the following yields: 1.4 percent and 0.9 percent. The main volatile constituents were ±-pinene (22.0 percent; 19.5 percent), 1,8-cineole (17.6 percent; 23.2 percent), ²-pinene (17.0 percent; 13.8 percent), camphor (4.7 percent; 11.6 percent), limonene (5.4 percent; 4.4 percent) and ³-terpinene (3.5 percent; 2.4 percent), totalizing more than 70 percent in the oils. The DPPH radical scavenging activity (EC50, 16.7 + 0.4 µg/mL) of the methanol extract was comparable to BHT (19.8 ± 0.5 µg/mL) showing a significant antioxidant activity. The oils showed low activities. The amount of total phenolics (TP, 373.0 + 15.9 mg GAE/g) and trolox equivalent (TEAC, 226.8 + 0.5 mg TE/g) confirmed the antioxidant activity of the methanol extract that can be attributed to the presence of polar phenolic compounds. In the brine shrimp bioassay the lethal concentrations (LC50) for the oil and methanol extract were 6.7 + 0.2 µg/mL and 13.0 + 3.7 µg/mL, respectively, providing important evidence of their biological activities.

6.
Rev. bras. farmacogn ; 18(2): 217-221, abr.- jun. 2008. tab
Article in Portuguese | LILACS | ID: lil-488657

ABSTRACT

Este trabalho teve como objetivo a avaliação da toxidade aguda e subaguda do óleo essencial de Piper aduncum pela determinação da DL50 em camundongos e a análise dos parâmetros bioquímicos e hematológicos em ratos. A planta é utilizada na medicina popular da região amazônica em diversas doenças e no seu óleo essencial o constituinte majoritário é o fenilpropanóide dilapiol, com propriedades inseticida, fungicida, bactericida, larvicida e moluscicida. A DL50 foi de 2,400 ± 191,7 mg/kg. O óleo essencial não alterou de maneira significativa os parâmetros hematológicos e bioquímicos em relação ao controle no tratamento subagudo, exceto a redução da creatinina. O valor da DL50 e os resultados observados nos parâmetros hematológicos e bioquímicos sugerem que o óleo essencial apresenta toxidade baixa.


The aim of this work was the acute and subacute toxicological evaluation of the essential oil of Piper aduncum with the determination of the LD50 in mice and the analysis of their hematological and biochemical parameters in rats. The plant is used in the Amazon folk medicine for several diseases and the phenylpropanoid dilapiolle is the main constituent of its essential oil, possessing insecticidal, fungicidal, bactericidal, larvicidal and molluscicidal properties. The LD50 was 2.400 ± 191.7 mg/kg. The essential oil did not change the hematological and biochemical parameters in a significant manner when compared with the control in the subacute treatment, excepting the reduction of creatinine. The LD50 and the hematological and biochemical results have suggested that the essential oil presents low toxicity.

7.
Bol. Centro Biol. Reprod ; 10: 7-14, 1991. tab
Article in Portuguese | LILACS | ID: lil-124588

ABSTRACT

Curarea tecunarum é uma planta usada por tribos indígenas como contraceptivo. As informaçöes etnobotânicas sugerem que o efeito seja no homem, embora a mulher também tome o chá. Com o objetivo de testar, em ratos, a hipótese de que o extrato etanólico de Curarea tecunarum pudesse interromper a produçäo de espermatozóide, projetou-se este trabalho. Ratos Wistar, adultos, foram tratados por gavage com 100 mg (dose única) e 50 mg (por 5 dias ou por 10 dias consecutivos) de extrato etanólico de C. tecunarum (tratado). Um lote de animais recebeu volume equivalente ao extrato, de água destilada (controle A) e outro lote recebeu do mesmo modo, de álcool 50% (controle B). Os animais foram sacrificados aos 7, 21 e 45 dias após o início do tratamento e, imediatamente após o sacrificio foram colhidas amostras de sêmen (ductos deferentes), que foram examinadas para identificar espermatozóides e verificar a sua motilidade. Os seguintes órgäos foram removidos e pesados: hipófise, vesícula seminal (com glândula de coagulaçäo), próstata ventral e testículo (par). Os animais foram pesados no ínicio do tratamento e na data do sacrifício. Näo se observam alteraçöes com significado biológico no peso dos animais dos diferentes grupos. Os órgäos pesados näo mostraram alteraçöes importantes após o tratamento. Todas as amostras de sêmen continham espermatozóides móveis. Embora sejam necessários estudos para avaliar as condiçöes funcionais do espermatozóide (habilidade para fertilizar e gerar embriöes normais) pode-se concluir que, nas condiçöes experimentais deste trabalho, o extrato etanólico de C. tecunarum näo apresenta efeito tóxico sobre o sistema reprodutor e o peso corporal de ratos e näo lesa, severamente, as células germinativas.


Subject(s)
Animals , Rats , Antispermatogenic Agents , Spermatogenesis , Sperm Motility , Plant Extracts , Plants, Medicinal , Rats, Inbred Strains/physiology , Semen/drug effects , Spermatogenesis-Blocking Agents , Spermatozoa/drug effects , Vas Deferens/drug effects , Body Weight/drug effects , Brazil , Contraceptive Agents, Male , Fertility/drug effects , Infertility, Male
8.
Bol. Centro Biol. Reprod ; 8: 17-22, 1989. tab
Article in Portuguese | LILACS | ID: lil-108181

ABSTRACT

A pesquisa teve por objetivo verificar, em testes controlados, o efeito abortivo atribuido popularmente à Petiveria alliacea. Ratas grávidas foram tratadas, por via oral, com extratos aquosos da folha (100mg/animal), do caule (200mg) ou da raiz (200mg) de Petiveria alliacea no 3§ ou no 5§ dia após inseminaçäo. O grupo controle recebeu, pela mesma via, volume de água destilada equivalente ao extrato administrado. Os animais foram sacrificados no 14§ dia após inseminaçäo. Contaram-se corpos lúteos, implantes viáveis, reabsorçöes. Observou-se que os extratos da raiz e folha de Petiveria alliacea demonstraram ter efeito anti-implantaçäo, enquanto que o caule parece ter efeito zigotóxico.


Subject(s)
Fetal Development/drug effects , Plant Extracts/toxicity , Plants, Medicinal , Abortifacient Agents
9.
Reproduçäo ; 4(2): 65-8, 1989. tab
Article in Portuguese | LILACS | ID: lil-83653

ABSTRACT

Apresentam-se resultados sobre efeito inibidor da fertilidade em ratas, tratadas com plantas usadas por populaçöes da regiäo amazônica. Nos testes inciais com oito plantas, as seguintes revelaram efeito zigotóxico ou de inibiçäo da implantaçäo e desenvolvimento embrionário: Cusparia toxicaria, Petiveria alliacea, Inga edulis e Endopleura uichi


Subject(s)
Rats , Animals , Female , Contraception , Plant Extracts/therapeutic use , Plants, Medicinal/metabolism , Brazil , Clinical Trials as Topic , Rats, Inbred Strains
10.
Bol. Centro Biol. Reprod ; 7: 31-8, 1988. tab
Article in Portuguese | LILACS | ID: lil-61283

ABSTRACT

A Petiveria alliacea L. (Fitolacacea) é considerada como abortiva pela populaçäo nativa e como anticoncepcional pelos índios caritianos de Rondônia. Extratos aquosos demonstraram efeito abortivo em ratas. Neste trabalho estuda-se o efeto interceptivo de diferentes extratos, administrados no 3§ ou no 5§ dia de gestaçäo da rata (espermatozóide no esfregaço vaginal = dia 1 de gestaçäo). Os animais foram injetados com diferentes doses e diferentes extratos e foram sacrificados no 14§ dia de gestaçäo . Os cornos uterinos foram examinados para observaçäo e contagem de implantes viáveis e reabsorçöes. Ovários foram removidos para observaçäo e contagem dos corpos lúteos. Os resultados mostram que o extratos hidroalcoólico (18 mg) de P, illiacea possui efeito zigotóxico e a fraçäo solúvel em água (20 mg) efeito abortivo


Subject(s)
Rats , Animals , Female , Abortifacient Agents/pharmacology , Plant Extracts/pharmacology , Pregnancy, Animal/drug effects
SELECTION OF CITATIONS
SEARCH DETAIL