scholarly journals Resistência de espécies arbóreas tropicais à ação de Ganoderma philippii

2021 ◽  
Vol 31 (1) ◽  
pp. 393-416
Author(s):  
Thaís Da Costa Paula ◽  
Paulo Sergio Torres Brioso
Keyword(s):  
Cariniana Legalis ◽  
Copaifera Langsdorffii

A resistência da madeira a fungos xilófagos é uma característica desejável em madeiras comerciais e nas empregadas na arborização urbana. Isso porque a ação desses fungos pode levar à perda das propriedades físicas, redução da resistência mecânica e durabilidade da madeira. Entretanto, pouco se sabe sobre a resistência de madeiras tropicais a fungos apodrecedores. Nesse contexto, este trabalho teve como objetivo avaliar a resistência natural da madeira de 28 espécies arbóreas tropicais submetidas à ação de Ganoderma philippii, através da análise da perda de massa obtida em um ensaio in vitro. Segundo os critérios de classificação de resistência a fungos da ASTM D2017 (2005), a maioria das espécies foi considerada altamente resistente, exceto Amburana cearensis, Pterocarpus rohrii, Joannesia princeps e Basiloxylon brasiliensis consideradas resistentes. A comparação dos valores de perda de massa obtidos entre todas as espécies arbóreas, após a ação de Ganoderma philippii, demonstrou que Joannesia princeps, Amburana cearensis, Pterocarpus rohrii, Basiloxylon brasiliensis, Barnebydendron riedelii, Parkia pendula, Cariniana legalis, Copaifera langsdorffii, Terminalia mameluco, Spondias venulosa, Astronium concinnum e Zeyheria tuberculosa tiveram perda de massa estatisticamente maior que as demais espécies.

scholarly journals Antimicrobial activity of copaíba (Copaifera langsdorffii) oleoresin on bacteria of clinical significance in cutaneous wounds

2013 ◽  
Vol 15 (4 suppl 1) ◽  
pp. 664-669 ◽  
Author(s):  
D.S. Masson ◽  
S.L. Salvador ◽  
A.C.M. Polizello ◽  
M.A.C. Frade
Keyword(s):  
Antimicrobial Activity ◽  
Healing Process ◽  
Folk Medicine ◽  
Wound Healing Process ◽  
Topical Formulation ◽  
Gram Positive ◽  
Cutaneous Wounds ◽  
Valuable Adjunct ◽  
Copaifera Langsdorffii

The present study was designed to evaluate the in vitro antimicrobial activity of Copaifera langsdorffii oleoresin, which has been used in folk medicine as an anti-inflammatory, antibacterial, healing among others. The oleoresin was tested against Gram-positive (Staphylococcus aureus, Streptococcus pyogenes, Enterococcus faecalis) and Gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacteria related to infections in cutaneous wounds. Antimicrobial activity was determined by the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) assays. Copaiba oleoresin showed antimicrobial activity only against the Gram-positive bacteria with MIC of 200 μg/mL, 400 μg/mL and 1100 μg/mL for S. aureus, S. pyogenes and E. faecalis, respectively. MBC values were the same as MIC for S. aureus and S. pyogenes and for E. faecalis it was 1200 μg/mL. Considering that infection significantly impairs the wound healing process, we believe that the use of copaiba oleoresin as a component of a topical formulation could be a valuable adjunct in the treatment of infected wounds, mainly in the case of wounds infected by Gram-positive microorganisms.

scholarly journals Effect of theCopaifera langsdorffiiDesf. Leaf Extract on the Ethylene Glycol-Induced Nephrolithiasis in Rats

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Rejane Barbosa de Oliveira ◽  
Eduardo Barbosa Coelho ◽  
Marina Rezende Rodrigues ◽  
Ana Rita de Mello Costa-Machado ◽  
João Paulo Barreto de Sousa ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Kidney Stone ◽  
Biochemical Parameters ◽  
Leaf Extract ◽  
Stone Formation ◽  
Osteopontin Expression ◽  
Copaifera Langsdorffii ◽  
Kidney Stone Formation ◽  
Different Doses

The potential of theCopaifera langsdorffiileaves extract to prevent stone formation was analyzed by means of an ethylene glycol (EG) animal model of nephrolithiasis and anin vitrocrystallization assay. Different doses of theC. langsdorffiileaves extract were administered to rats treated with EG. Urine biochemical parameters were quantified. CaOx deposits count and analysis of osteopontin expression were conducted on kidneys fixed in formalin. Thein vitroassay was performed by turbidimetry. Phytochemical analyses of the extract were accomplished by HPLC-UV-DAD, and several compounds were isolated.C. langsdorffiileaf extract was able to avoid stone formation. The number of deposits was50.30±31.29at the higher extract dose, compared to the value of179.5±45.96achieved with the EG control. Significantly lower oxalate levels and OPN expression and increased citrate levels were observed after extract administration. In thein vitroassay, the extract diluted the formed crystals. Phytochemical analyses showed that the extract is rich in phenolic compounds that are capable of preventing stone formation. Thus, on the basis of our results, we suggest that theC. langsdorffiileaf extract has potential application in the prevention of kidney stone formation.

Proteomic profile and polyamine contents are modulated by light source to promote in vitro shoot development in Cariniana legalis (Martius) O. Kuntze (Lecythidaceae)

2019 ◽  
Vol 137 (2) ◽  
pp. 329-342
Author(s):  
Joviana Lerin ◽  
Victor Paulo Mesquita Aragão ◽  
Ricardo Souza Reis ◽  
Vanildo Silveira ◽  
Claudete Santa-Catarina
Keyword(s):  
Light Source ◽  
Shoot Development ◽  
Proteomic Profile ◽  
Cariniana Legalis

Preventive activity of Copaifera langsdorffii Desf. leaves extract and its major compounds, afzelin and quercitrin, on DNA damage in in vitro and in vivo models

2021 ◽  
pp. 1-13
Author(s):  
Saulo Duarte Ozelin ◽  
Juliana Marques Senedese ◽  
Jacqueline Morais Alves ◽  
Carla Carolina Munari ◽  
Juliana De Carvalho Da Costa ◽  
...  
Keyword(s):  
Dna Damage ◽  
In Vivo Models ◽  
Preventive Activity ◽  
Copaifera Langsdorffii

Ultrastructural Investigations of the Contractile Filaments of Amoebae

1974 ◽  
Vol 32 ◽  
pp. 188-189
Author(s):  
P.L. Moore
Keyword(s):  
Cytoplasmic Streaming ◽  
Three Dimensional ◽  
Freeze Fracture ◽  
Amoeboid Movement ◽  
Different Types ◽  
Chemical Conditions ◽  
Complete Interpretation

Previous freeze fracture results on the intact giant, amoeba Chaos carolinensis indicated the presence of a fibrillar arrangement of filaments within the cytoplasm. A complete interpretation of the three dimensional ultrastructure of these structures, and their possible role in amoeboid movement was not possible, since comparable results could not be obtained with conventional fixation of intact amoebae. Progress in interpreting the freeze fracture images of amoebae required a more thorough understanding of the different types of filaments present in amoebae, and of the ways in which they could be organized while remaining functional.The recent development of a calcium sensitive, demembranated, amoeboid model of Chaos carolinensis has made it possible to achieve a better understanding of such functional arrangements of amoeboid filaments. In these models the motility of demembranated cytoplasm can be controlled in vitro, and the chemical conditions necessary for contractility, and cytoplasmic streaming can be investigated. It is clear from these studies that “fibrils” exist in amoeboid models, and that they are capable of contracting along their length under conditions similar to those which cause contraction in vertebrate muscles.

In Vitro Induction of Crystals of MT Protein by Vinblastine-Colcemid in Mouse Spermatids

1974 ◽  
Vol 32 ◽  
pp. 132-133
Author(s):  
John J. Wolosewick ◽  
John H. D. Bryan
Keyword(s):  
Endoplasmic Reticulum ◽  
Smooth Endoplasmic Reticulum ◽  
Nuclear Ring ◽  
Rough Er ◽  
Distal Direction ◽  
In Vitro Induction

Early in spermiogenesis the manchette is rapidly assembled in a distal direction from the nuclear-ring-densities. The association of vesicles of smooth endoplasmic reticulum (SER) and the manchette microtubules (MTS) has been reported. In the mouse, osmophilic densities at the distal ends of the manchette are the organizing centers (MTOCS), and are associated with the SER. Rapid MT assembly and the lack of rough ER suggests that there is an existing pool of MT protein. Colcemid potentiates the reaction of vinblastine with tubulin and was used in this investigation to detect this protein.

Induction and Differentiation of Dental Epithelium in Vivo and in Vitro

1982 ◽  
Vol 40 ◽  
pp. 142-145
Author(s):  
E. J. Kollar
Keyword(s):  
Connective Tissue ◽  
Oral Mucosa ◽  
Basal Lamina ◽  
Functional Derivatives ◽  
Specific Source ◽  
Dental Epithelium ◽  
Connective Tissue Stroma

The differentiation and maintenance of many specialized epithelial structures are dependent on the underlying connective tissue stroma and on an intact basal lamina. These requirements are especially stringent in the development and maintenance of the skin and oral mucosa. The keratinization patterns of thin or thick cornified layers as well as the appearance of specialized functional derivatives such as hair and teeth can be correlated with the specific source of stroma which supports these differentiated expressions.

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