Micromorfologia da superfície do fruto de espécies de Mikania Willd. (Asteraceae) ocorrentes no estado do Rio Grande do Sul, Brasil

Ritter, Mara Rejane; Miotto, Sílvia Teresinha Sfoggia

doi:10.1590/s0102-33062006000100022

Cited by 25 publications

(23 citation statements)

References 10 publications

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“…Para o Brasil são aceitas 203 espécies (Ritter et al, 2015), sendo queas mais utilizadas na medicina popular para tratamento das afecções respiratórias são Mikania glomerata Spreng. e M. laevigata Sch.…”

Section: Introductionunclassified

A new ecotype ofMikania glomerataSpreng. (Asteraceae) rich in essential oil in southern Brazil

Silva¹,

Ritter²,

Zambonim³

et al. 2015

Revista Fitos

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Section: Introductionunclassified

A new ecotype ofMikania glomerataSpreng. (Asteraceae) rich in essential oil in southern Brazil

Silva¹,

Ritter²,

Zambonim³

et al. 2015

Revista Fitos

Self Cite

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“…Among the Asteraceae of the cerrado vegetation studied by Castro et al (1997), type IV trichomes (glandular and uniseriate with peduncle composed of from six to seven cells and unicellular secretory portion) occurred exclusively between the Eupatorieae and Heliantheae (sensu Bremer 1994). In their study of the micromorphology of species of Mikania, Ritter and Miotto (2006) reported that some simple, pluricellular and uniseriate trichomes, as well as many glandular trichomes, were observed on the surface of the fruits of M. micrantha. However, type IV trichomes that are found in the present examination of this species were not reported by those authors.…”

Section: Discussionmentioning

confidence: 99%

“…Wagenitz (1976) suggested that anatomical studies of the fruits of the Asteraceae might aid in elucidating its systematics. Characteristics of the indumentum (Ritter and Miotto 2006), pappus (Bean 2001), carpopodium (Haque and Godward 1984), and the anatomy of the pericarp itself (Bruhl and Quinn 1990), or a com-bination of all of the characters cited above (Leszek et al 1997), have been used to delimit tribes, genera, and even species of this family.…”

Section: Introductionmentioning

confidence: 99%

Structure and ontogeny of the pericarp of six Eupatorieae (Asteraceae) with ecological and taxonomic considerations

Marzinek

Oliveira

2010

An. Acad. Bras. Ciênc.

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The ontogeny of cypselae and their accessory parts were examined using light and scanning electron microscopy for the species Campuloclinium macrocephalum, Chromolaena stachyophylla, Mikania micrantha, Praxelis pauciflora, Symphyopappus reticulatus, and Vittetia orbiculata, some of these being segregated from the genus Eupatorium. A layer of phytomelanin observed in the fruit appears to be secreted by the outer mesocarp into the schizogenous spaces between the outer and inner mesocarp; its thickness was observed to vary among the different species examined. The bristles of the pappus are vascularized, except in M. micrantha, and have cells that are superficially projected and arranged acropetally; in S. reticulatus some of the projections are retrorse and a fracture line on the floral disk that is only seen in this species may indicate a double dispersal process. Numerous differences observed among the cypselae examined here reinforce earlier segregations of the genus Eupatorium sensu lato.

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“…No Brasil, ocorre de norte a sul, tendo sua principal área de dispersão nos estados de Minas Gerais, Rio de Janeiro e São Paulo (Oliveira, 1972;Ritter & Miotto, 2005). M. glomerata Sprengel é uma planta medicinal bastante empregada na medicina popular devido as suas propriedades broncodilatadora, antiasmática, expectorante e antitussígena (Panizza, 1997).…”

Section: Introductionunclassified

Propriedades físicoquímicas e avaliação da toxicidade aguda do extrato etanólico padronizado a 70% das folhas de Mikania glomerata (Asteraceae)

Santana

Brito

Sousa

et al. 2013

Rev. bras. plantas med.

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RESUMO:Mikania glomerata (Asteraceae) é bastante utilizada na medicina popular devido às suas ações broncodilatadora, antiasmática, expectorante e antitussígena. O objetivo do presente estudo foi determinar propriedades físicoquímicas do pó obtido a partir das folhas de M. glomerata, bem como avaliar a toxicidade em camundongos após tratamento agudo com doses repetidas do extrato etanólico padronizado a 70% preparado durante 30 dias consecutivos. No estudo das propriedades físicoquímicas fez-se a determinação da densidade bruta e de compactação, do teor de cinzas totais, do teor de umidade e da granulometria. De acordo com os resultados obtidos o pó pode ser usado na formulação de uma forma farmacêutica sólida, uma vez que suas propriedades físico-químicas são compatíveis com o desenvolvimento desse tipo de formulação. Na segunda parte do estudo foi determinada a dose letal 50% (DL 50 ) em camundongos, e na análise morfológica macroscópica dos principais órgãos e avaliada a toxicidade aguda com doses repetidas em parâmetros bioquímicos e hematológicos de camundongos. Os resultados sugerem que o extrato etanólico padronizado a 70% pode ser usado de forma segura, uma vez que apresentou um valor para a DL 50 (~3000 mg kg -1 ) que pode ser classificado na categoria nociva, e não produziu nenhuma alteração morfológica nos principais órgãos e em parâmetros bioquímicos e hematológicos de camundongos. Palavras-chave:Mikania glomerata, Asteraceae, Toxicidade Aguda, Camundongos.ABSTRACT: Physicochemical properties and acute toxicity evaluation of ethanol extract of the leaves from Mikania glomerata Sprengel. Mikania glomerata Sprengel is a plant from the Asteraceae family and it is widely used in folk medicine because of its bronchodilating, anti-asthmatic, expectorant and antitussive effects. The purpose of this study was to determine the physicochemical properties of the powder obtained from the leaves of M. glomerata, and to evaluate the toxicity in mice after an acute treatment with repeated doses of standardized 70% ethanol extract prepared from the leaves during 30 consecutive days. To study the physicochemical properties of the powder, we conducted a determination of the bulk density and compaction, the total ash content, the moisture content and particle size. According to the results obtained, we suggest that the powder can be used to formulate a solid dosage form, since its physicochemical properties matches the development of this type of formulation. In the second part of the study, it was determined a lethal dose in the order of 50% (LD50), along with a gross morphological analysis and the evaluation of the acute toxicity with repeated doses, in the terms of biochemical and hematological parameters of mice. According to the results from the second phase, we suggest that the 70% ethanol extract can be used safely in humans, since it presented a value for the LD50 (~ 3000 mg kg -1 ) that can be classified as 'harmful'. It also did not produce any morphological changes in the major organs and in the biochemical ...

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Micromorfologia da superfície do fruto de espécies de Mikania Willd. (Asteraceae) ocorrentes no estado do Rio Grande do Sul, Brasil

Cited by 25 publications

References 10 publications

A new ecotype ofMikania glomerataSpreng. (Asteraceae) rich in essential oil in southern Brazil

A new ecotype ofMikania glomerataSpreng. (Asteraceae) rich in essential oil in southern Brazil

Structure and ontogeny of the pericarp of six Eupatorieae (Asteraceae) with ecological and taxonomic considerations

Propriedades físicoquímicas e avaliação da toxicidade aguda do extrato etanólico padronizado a 70% das folhas de Mikania glomerata (Asteraceae)

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