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1.
J Eur Acad Dermatol Venereol ; 36(11): 1904-1926, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36056736

RESUMO

The evidence- and consensus-based guideline on atopic eczema was developed in accordance with the EuroGuiDerm Guideline and Consensus Statement Development Manual. Four consensus conferences were held between December 2020 and July 2021. Twenty-nine experts (including clinicians and patient representatives) from 12 European countries participated. This second part of the guideline includes recommendations and detailed information on basic therapy with emollients and moisturizers, topical anti-inflammatory treatment, antimicrobial and antipruritic treatment and UV phototherapy. Furthermore, this part of the guideline covers techniques for avoiding provocation factors, as well as dietary interventions, immunotherapy, complementary medicine and educational interventions for patients with atopic eczema and deals with occupational and psychodermatological aspects of the disease. It also contains guidance on treatment for paediatric and adolescent patients and pregnant or breastfeeding women, as well as considerations for patients who want to have a child. A chapter on the patient perspective is also provided. The first part of the guideline, published separately, contains recommendations and guidance on systemic treatment with conventional immunosuppressive drugs, biologics and janus kinase (JAK) inhibitors, as well as information on the scope and purpose of the guideline, and a section on guideline methodology.


Assuntos
Anti-Infecciosos , Produtos Biológicos , Dermatite Atópica , Fármacos Dermatológicos , Eczema , Adolescente , Anti-Infecciosos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Antipruriginosos/uso terapêutico , Produtos Biológicos/uso terapêutico , Criança , Dermatite Atópica/tratamento farmacológico , Fármacos Dermatológicos/uso terapêutico , Eczema/tratamento farmacológico , Emolientes/uso terapêutico , Feminino , Humanos , Janus Quinases
2.
J Eur Acad Dermatol Venereol ; 36(9): 1409-1431, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35980214

RESUMO

The evidence- and consensus-based guideline on atopic eczema was developed in accordance with the EuroGuiDerm Guideline and Consensus Statement Development Manual. Four consensus conferences were held between December 2020 and July 2021. Twenty-nine experts (including clinicians and patient representatives) from 12 European countries participated. This first part of the guideline includes general information on its scope and purpose, the health questions covered, target users and a methods section. It also provides guidance on which patients should be treated with systemic therapies, as well as recommendations and detailed information on each systemic drug. The systemic treatment options discussed in the guideline comprise conventional immunosuppressive drugs (azathioprine, ciclosporin, glucocorticosteroids, methotrexate and mycophenolate mofetil), biologics (dupilumab, lebrikizumab, nemolizumab, omalizumab and tralokinumab) and janus kinase inhibitors (abrocitinib, baricitinib and upadacitinib). Part two of the guideline will address avoidance of provocation factors, dietary interventions, immunotherapy, complementary medicine, educational interventions, occupational and psychodermatological aspects, patient perspective and considerations for paediatric, adolescent, pregnant and breastfeeding patients.


Assuntos
Dermatite Atópica , Eczema , Adolescente , Azatioprina/uso terapêutico , Criança , Ciclosporina/uso terapêutico , Dermatite Atópica/tratamento farmacológico , Eczema/tratamento farmacológico , Humanos , Imunossupressores/uso terapêutico , Ácido Micofenólico/uso terapêutico
3.
Anim Sci J ; 92(1): e13592, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34374488

RESUMO

Improvements in sow productivity have raised questions regarding dietary vitamin D recommendations. The present study aimed to evaluate the effects of the housing system with access to sunlight exposure and supplementation of 25-hydroxicholecalciferol on performance and serum levels of 25(OH)D3 in sows during gestation and lactation. Sows were distributed in an experimental design with two housing systems: gestation crates or gestation free-range system with external area for sunlight exposure; and two diets: 0 or 50 µg of 25-hydroxicholecalciferol kg-1 . The use of 25-hydroxicholecalciferol tended (P = 0.052) to improve total born and influenced (P = 0.046) on number of born alive. Litter weight at birth was also increased (P = 0.01) by 25-hydroxicholecalciferol supplementation; 25-hydroxicholecalciferol supplementation and housing system (free-range with sunlight exposure) tended to increase weaning weight (P = 0.07) and litter daily gain (P = 0.051) during lactation. Exposure to sunlight and 25-hydroxicholecalciferol supplementation increased 25(OH)D3 serum levels when compared with control treatment during gestation (136.95 vs. 113.92 ng mL-1 ; P = 0.035) and lactation (120.29 vs. 88.93 ng mL-1 ; P = 0.026). In conclusion, the association of 25-hydroxicholecalciferol supplementation with exposure to sunlight during gestation improved significantly 25(OH)D3 serum levels and consequently performance traits in gestation and lactation.


Assuntos
Ração Animal , Calcifediol , Suplementos Nutricionais , Lactação , Ração Animal/análise , Animais , Dieta/veterinária , Feminino , Tamanho da Ninhada de Vivíparos , Paridade , Gravidez , Suínos , Vitaminas , Desmame
4.
World J Urol ; 39(6): 1955-1960, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32734459

RESUMO

PURPOSE: The purpose of this study was to determine the prevalence of bladder lesions diagnosed during transurethral resection of the prostate (TURP), to identify the associated risk factors, and to correlate the macroscopic descriptions with the pathological findings. METHODS: This was a single-center retrospective case series conducted at a hospital in the city of São Paulo, Brazil. We reviewed the medical and surgical records of patients who underwent TURP between January 2012 and December 2017. RESULTS: The final sample comprised 513 patients, with a mean age of 70.8 years. Bladder lesions were identified during TURP in 109 (21.2%) of the patients, and 90 of those lesions were submitted for pathological examination. The most common macroscopic finding was bullous edema, which was seen in 57 (63.3%) of the 90 lesions examined. The pathological analysis revealed chronic cystitis in 61 lesions (67.8%) and malignant lesions in 16 (17.8%). Of the 57 lesions described as bullous edema, 5 (8.8%) were found to be malignant. CONCLUSIONS: Alterations in the bladder mucosa appear to be more common among elderly patients who use an indwelling urinary catheter for a prolonged period and among patients with recurrent urinary tract infections. In addition, the risk of a bladder lesion being malignant is apparently higher in current and former smokers than in never smokers. Our findings suggest that at-risk patients should undergo biopsy or resection of incidental bladder lesions even if those lesions seem to be benign, due to the low level of agreement between the visual analysis and the pathological examination.


Assuntos
Achados Incidentais , Hiperplasia Prostática/cirurgia , Ressecção Transuretral da Próstata , Doenças da Bexiga Urinária/diagnóstico , Doenças da Bexiga Urinária/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Correlação de Dados , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Retrospectivos , Fatores de Risco , Doenças da Bexiga Urinária/patologia
5.
Fitoterapia ; 132: 26-29, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30114470

RESUMO

A new flavone, 4'-hydroxy-6,7-methylenedioxy-3-methoxyflavone 1, and two other nucleosides, ribavirin 2 and adenosine 3, were isolated from the leaves of Dulacia egleri. The nucleosides were identified by spectroscopic techniques (1D, 2D-NMR) while the structure of the flavonoid was established by 1D, 2D-NMR analysis, including HRESIMS data. The results obtained in the biological assays showed that the compound 1 was able to inhibit cathepsins B and L with IC50 of 14.88 ±â€¯0.18 µM and 3.19 ±â€¯0.07 µM, respectively. The mechanism of inhibition for both enzymes were determined showing to be competitive at cathepsin B with Ki = 12.8 ±â€¯0.6 µM and non-linear non-competitive with positive cooperativity inhibition at cathepsin L with Ki = 322 ±â€¯33 µM, αKi = 133 ±â€¯15 µM, ßKi = 5.14 ±â€¯0.41 µM and γKi = 13.2 ±â€¯13 µM.


Assuntos
Catepsina B/antagonistas & inibidores , Catepsina L/antagonistas & inibidores , Inibidores Enzimáticos/química , Flavonoides/química , Olacaceae/química , Brasil , Inibidores Enzimáticos/isolamento & purificação , Inibidores Enzimáticos/farmacologia , Flavonoides/isolamento & purificação , Flavonoides/farmacologia , Estrutura Molecular , Folhas de Planta/química
6.
Biosci. j. (Online) ; 34(6 Supplement 1): 97-107, nov./dec. 2018.
Artigo em Inglês | LILACS | ID: biblio-968875

RESUMO

This study aimed at comparing the growth and physiological changes in Jatropha curcas L. (jatropha or physic nut) young plants fertilized or not with a commercial product based on a micronutrient delivery system (MDS), under different doses of NPK. Measurements of growth, chlorophyll content, and leaf gas exchange were performed in the greenhouse, where plants were arranged in a split-split plot design. Plants were grown for 120 days in 3.9 L pots containing local soil, with or without MDS (main plot), combined with NPK doses (0; 1.8; 4.7 and 7.4 g L-1) in subplots. Dose-response curves showed that most variables were positively responsive to NPK doses in plants growing without MDS, whereas slight responses or even opposite behavior was observed in MDS-fertilized plants. MDS application under low NPK doses resulted in higher biomass allocation in leaves and roots, increases in number of leaves and chlorophyll content, plant height, stem diameter, shoot and root dry weight, stomatal conductance, photosynthesis, leaf transpiration, and water use efficiency, as well as decreases in intercellular CO2 in the leaf and vapor-pressure deficit. The enhanced biomass allocation, photosynthesis and gas exchange in MDS-supplemented plants indicates the relevant role played by this fertilizer in jatropha metabolism, resulting in more vigorous plants.


Este estudo teve como objetivo comparar o crescimento e as mudanças fisiológicas em plantas jovens de Jatropha curcas L. (pinhão manso), fertilizadas ou não, com um produto comercial baseado em um sistema de fornecimento de micronutrientes (MDS), sob diferentes doses de NPK. Medidas de crescimento, teor de clorofila e troca gasosa foliar foram realizados em casa de vegetação, onde as plantas foram arranjadas em um delineamento de blocos casualizados com parcela subdividida. As plantas foram cultivadas por 120 dias em potes de 3,9 L contendo solo local, com ou sem MDS (parcela principal), combinado com doses de NPK (0; 1,8; 4,7 e 7,4 g L-1) nas subparcelas. Curvas doseresposta mostraram que a maioria das variáveis responderam positivamente às doses de NPK em plantas crescendo sem MDS, enquanto respostas fracas ou mesmo comportamento oposto foi observado em plantas fertilizadas com MDS. A aplicação de MDS em doses baixas de NPK resultaram em maior alocação de biomassa nas folhas e raízes, aumento no número de folhas e teor de clorofila, altura da planta, diâmetro do caule, pesos secos da parte aérea e raiz, condutância estomatal, fotossíntese, transpiração foliar e eficiência no uso da água, bem como na redução do CO2 intercelular na folha e déficit de pressão de vapor. O aumento na alocação de biomassa, fotossíntese e troca gasosa em plantas suplementadas com MDS indica o papel relevante deste fertilizante no metabolismo de pinhão manso, resultando em plantas mais vigorosas.


Assuntos
Fotossíntese , Biomassa , Micronutrientes , Jatropha , Biocombustíveis , Fertilizantes
7.
J Eur Acad Dermatol Venereol ; 32(6): 850-878, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29878606

RESUMO

This guideline was developed as a joint interdisciplinary European project, including physicians from all relevant disciplines as well as patients. It is a consensus-based guideline, taking available evidence from other guidelines, systematic reviews and published studies into account. This second part of the guideline covers antimicrobial therapy, systemic treatment, allergen-specific immunotherapy, complementary medicine, psychosomatic counselling and educational interventions, whereas the first part covers methods, patient perspective, general measures and avoidance strategies, basic emollient treatment and bathing, dietary intervention, topical anti-inflammatory therapy, phototherapy and antipruritic therapy. Management of AE must consider the individual clinical variability of the disease. Systemic immunosuppressive treatment with cyclosporine, methotrexate, azathioprine and mycophenolic acid is established option for severe refractory cases, and widely available. Biologicals targeting the T helper 2 pathway such as dupilumab may be a safe and effective, disease-modifying alternative when available. Oral drugs such as JAK inhibitors and histamine 4 receptor antagonists are in development. Microbial colonization and superinfection may cause disease exacerbation and can require additional antimicrobial treatment. Allergen-specific immunotherapy with aeroallergens may be considered in selected cases. Psychosomatic counselling is recommended especially in stress-induced exacerbations. Therapeutic patient education ('Eczema school') is recommended for children and adult patients. General measures, basic emollient treatment, bathing, dietary intervention, topical anti-inflammatory therapy, phototherapy and antipruritic therapy have been addressed in the first part of the guideline.


Assuntos
Consenso , Dermatite Atópica/terapia , Eczema/terapia , Guias de Prática Clínica como Assunto , Adulto , Alérgenos/toxicidade , Anti-Infecciosos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Criança , Dermatite Atópica/dietoterapia , Dermatite Atópica/tratamento farmacológico , Dermatite Atópica/microbiologia , Fármacos Dermatológicos/uso terapêutico , Eczema/dietoterapia , Eczema/tratamento farmacológico , Eczema/microbiologia , Europa (Continente) , Humanos , Imunossupressores/uso terapêutico , Imunoterapia , Educação de Pacientes como Assunto
8.
J Eur Acad Dermatol Venereol ; 32(5): 657-682, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29676534

RESUMO

This guideline was developed as a joint interdisciplinary European project, including physicians from all relevant disciplines as well as patients. It is a consensus-based guideline, taking available evidence from other guidelines, systematic reviews and published studies into account. This first part of the guideline covers methods, patient perspective, general measures and avoidance strategies, basic emollient treatment and bathing, dietary intervention, topical anti-inflammatory therapy, phototherapy and antipruritic therapy, whereas the second part covers antimicrobial therapy, systemic treatment, allergen-specific immunotherapy, complementary medicine, psychosomatic counselling and educational interventions. Management of AE must consider the individual clinical variability of the disease; highly standardized treatment rules are not recommended. Basic therapy is focused on treatment of disturbed barrier function by hydrating and lubricating topical treatment, besides further avoidance of specific and unspecific provocation factors. Topical anti-inflammatory treatment based on glucocorticosteroids and calcineurin inhibitors is used for flare management and for proactive therapy for long-term control. Topical corticosteroids remain the mainstay of therapy, whereas tacrolimus and pimecrolimus are preferred in sensitive skin areas and for long-term use. Topical phosphodiesterase inhibitors may be a treatment alternative when available. Adjuvant therapy includes UV irradiation, preferably with UVB 311 nm or UVA1. Pruritus is targeted with the majority of the recommended therapies, but some patients may need additional antipruritic therapy. Antimicrobial therapy, systemic anti-inflammatory treatment, immunotherapy, complementary medicine and educational intervention will be addressed in part II of the guideline.


Assuntos
Dermatite Atópica/etiologia , Dermatite Atópica/terapia , Emolientes/uso terapêutico , Glucocorticoides/uso terapêutico , Prurido/terapia , Higiene da Pele , Administração Cutânea , Adolescente , Adulto , Alérgenos/efeitos adversos , Inibidores de Calcineurina/uso terapêutico , Criança , Pré-Escolar , Consenso , Dieta , Exposição Ambiental/prevenção & controle , Poluentes Ambientais/efeitos adversos , Europa (Continente) , Hipersensibilidade Alimentar/complicações , Hipersensibilidade Alimentar/diagnóstico , Glucocorticoides/administração & dosagem , Humanos , Lactente , Recém-Nascido , Fototerapia , Prurido/etiologia , Índice de Gravidade de Doença
9.
J Strength Cond Res ; 31(3): 743-749, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27379958

RESUMO

Loturco, I, Nakamura, FY, Winckler, C, Bragança, JR, da Fonseca, RA, Filho, JM, Zaccani, WA, Kobal, R, Cal Abad, CC, Kitamura, K, Pereira, LA, and Franchini, E. Strength-power performance of visually impaired paralympic and olympic judo athletes from the brazilian national team: a comparative study. J Strength Cond Res 31(3): 743-749, 2017-The aim of this study was to compare the muscle power and maximal isometric strength capacities of Olympic and visually impaired Paralympic judo athletes. Twenty-eight elite judo athletes (7 men and 7 women per group) from the permanent Brazilian National Paralympic and Olympic teams took part in this study. After a specific warm-up, the athletes performed loaded jump squat (JS), bench press (BP), and standing barbell row (SBR) exercises to determine their values of maximum mean propulsive power (MPP) in these respective exercises. The maximal isometric strength (MIS) was also determined for both upper and lower limbs, through the use of BP and half-squat (HS) exercises. Finally, the jumping ability was assessed using unloaded squat jump (SJ). The magnitude-based inference was used to compare the groups. The Olympic judo athletes presented a likely higher SJ height than the Paralympic athletes. The Olympic group presented almost certainly higher MPP in the loaded JS and in the SBR exercises and likely higher MPP in the BP exercise. Importantly, in the MIS assessments the differences between groups in the HS and BP exercises were rated as unclear. In conclusion, our results showed that both Olympic and Paralympic judo athletes present similar levels of maximal isometric strength, but muscle power performance is superior in Olympic athletes.


Assuntos
Atletas , Desempenho Atlético/fisiologia , Força Muscular/fisiologia , Treinamento Resistido/métodos , Pessoas com Deficiência Visual , Adolescente , Adulto , Brasil , Estudos Transversais , Feminino , Humanos , Contração Isométrica/fisiologia , Extremidade Inferior/fisiologia , Masculino , Artes Marciais/fisiologia , Adulto Jovem
10.
J Anim Sci ; 94(5): 1913-23, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27285689

RESUMO

The purpose of this study was to evaluate possible effects of quercetin (Q) on liver lipid metabolism and antioxidative status in periparturient dairy cows. The periparturient period is associated with enormous metabolic changes for dairy cows. Energy needs for incipient lactation are too high to be balanced by feed intake, leading to negative energy balance and body fat mobilization. It has been estimated that this leads to the development of fatty liver in about 50% of cows, which are at high risk for disease. Furthermore, the antioxidative status of these cows may be impaired. Quercetin is a plant flavonoid having hepatoprotective and antioxidative potential and the ability to reduce liver lipid accumulation in monogastric animals. Little information is available in regard to these effects in ruminants. To prevent microbial Q degradation in the rumen, Q was administered via a duodenal fistula to improve systemic availability. Five cows of the Q-treated group received, daily, 100 mg of quercetin dehydrate/kg BW in a 0.9% sodium chloride solution from d -20 until d 20 relative to calving, whereas 5 control (CTR) cows received only a sodium chloride solution. Blood samples were taken weekly and liver biopsies were performed in wk -4, -2, and 3 relative to calving. Cows treated with Q showed a tendency ( = 0.082) for lower liver fat content compared with CTR cows. Liver glycogen, glutathione concentrations, and relative mRNA abundance of genes related to hepatic lipid metabolism and antioxidative status as well as parameters of antioxidative status in plasma were not affected ( > 0.1) by Q supplementation. In conclusion, liver fat content in dairy cows tended to be reduced by Q supplementation, but potential underlying mechanisms remain unclear because analyzed parameters related to hepatic lipid metabolism and antioxidative defense were not altered by Q supplementation.


Assuntos
Bovinos/fisiologia , Metabolismo dos Lipídeos/efeitos dos fármacos , Fígado/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Quercetina/farmacologia , Tecido Adiposo/metabolismo , Animais , Antioxidantes/metabolismo , Suplementos Nutricionais , Vias de Administração de Medicamentos , Duodeno , Metabolismo Energético , Feminino , Flavonoides , Lactação/metabolismo , Lipídeos/farmacologia , Fígado/metabolismo , Leite/metabolismo , Quercetina/administração & dosagem , Rúmen/metabolismo
11.
Bioorg Med Chem Lett ; 26(8): 1881-4, 2016 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-26988303

RESUMO

Cerebral malaria is caused by Plasmodium falciparum. Atorvastatin (AVA) is a pentasubstituted pyrrole, which has been tested as an adjuvant in the treatment of cerebral malaria. Herein, a new class of hybrids of AVA and aminoquinolines (primaquine and chloroquine derivatives) has been synthesized. The quinolinic moiety was connected to the pentasubstituted pyrrole from AVA by a linker group (CH2)n=2-4 units. The activity of the compounds increased with the size of the carbons chain. Compound with n=4 and 7-chloroquinolinyl has displayed better activity (IC50=0.40 µM) than chloroquine. The primaquine derivative showed IC50=1.41 µM, being less toxic and more active than primaquine.


Assuntos
Antimaláricos/química , Antimaláricos/farmacologia , Atorvastatina/farmacologia , Plasmodium falciparum/efeitos dos fármacos , Pirróis/farmacologia , Quinolinas/farmacologia , Antimaláricos/síntese química , Atorvastatina/química , Relação Dose-Resposta a Droga , Estrutura Molecular , Testes de Sensibilidade Parasitária , Pirróis/química , Quinolinas/química , Relação Estrutura-Atividade
12.
Scand J Med Sci Sports ; 25(4): 534-42, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24924232

RESUMO

Traumeel (Tr14) is a natural, combination drug, which has been shown to modulate inflammation at the cytokine level. This study aimed to investigate potential effects of Tr14 on the exercise-induced immune response. In a double-blind, randomized, controlled trial, healthy, untrained male subjects received either Tr14 (n = 40) or placebo (n = 40) for 24 h after a strenuous experimental exercise trial on a bicycle (60 min at 80%VO2 max). A range of antigen-stimulated cytokines (in vitro), white blood cell count, lymphocyte activation and apoptosis markers, and indicators of muscle damage were assessed up to 24 h following exercise. The area under the curve with respect to the increase (AUCI ) was compared between both groups. The Tr14 group showed a reduced exercise-induced leukocytosis and neutrocytosis (P < 0.01 for both), a higher AUCI score of antigen-stimulated IL-1ß and IL-1α (absolute and per monocyte, all P < 0.05), a lower AUCI score of antigen-stimulated GM-CSF (P < 0.05) and by trend a lower AUCI score of antigen-stimulated IL-2 and IL-4 as well as a higher AUCI score of antigen-stimulated IL-6 (all P < 0.1). Tr14 might promote differentiated effects on the exercise-induced immune response by (a) decreasing the inflammatory response of the innate immune system; and (b) augmenting the pro-inflammatory cytokine response.


Assuntos
Anti-Inflamatórios/farmacologia , Citocinas/sangue , Citocinas/efeitos dos fármacos , Exercício Físico/fisiologia , Inflamação/imunologia , Minerais/farmacologia , Extratos Vegetais/farmacologia , Adulto , Apoptose/efeitos dos fármacos , Área Sob a Curva , Proteína C-Reativa/metabolismo , Células Cultivadas , Creatina Quinase/sangue , Citocinas/metabolismo , Método Duplo-Cego , Enterotoxinas/imunologia , Epinefrina/sangue , Humanos , Hidroliases/sangue , Contagem de Leucócitos , Leucocitose , Lipopolissacarídeos/imunologia , Ativação Linfocitária/efeitos dos fármacos , Masculino , Norepinefrina/sangue , Projetos Piloto , Estudos Prospectivos , Adulto Jovem
13.
Plant Cell Rep ; 33(9): 1413-23, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24845051

RESUMO

Dendrobium is a large genus in the family Orchidaceae that exhibits vast diversity in floral characteristics, which is of considerable importance to orchid breeders, biotechnologists and collectors. Native species have high value as a result of their medicinal properties, while their hybrids are important as ornamental commodities, either as cut flowers or potted plants and are thus veritable industrial crops. Thus, preservation of Dendrobium germplasm is valuable for species conservation, breeding programs and the floriculture industry. Cryopreservation represents the only safe, efficient and cost-effective long-term storage option to facilitate the conservation of genetic resources of plant species. This review highlights 16 years of literature related to the preservation of Dendrobium germplasm and comprises the most comprehensive assessment of thorough studies performed to date, which shows reliable and reproducible results. Air-drying, encapsulation-dehydration, encapsulation-vitrification, vitrification and droplet-vitrification are the current cryopreservation methodologies that have been used to cryopreserve Dendrobium germplasm. Mature seeds, pollen, protoplasts, shoot primordia, protocorms and somatic embryos or protocorm-like bodies (PLBs) have been cryopreserved with different levels of success. Encapsulation-vitrification and encapsulation-dehydration are the most used protocol, while PLBs represent the main explant explored.


Assuntos
Criopreservação/métodos , Dendrobium , Brotos de Planta , Pólen , Protoplastos , Sementes , Conservação dos Recursos Naturais
14.
Pharm Biol ; 51(9): 1087-90, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23738822

RESUMO

CONTEXT: Despite several pharmacological applications of Rosmarinus officinalis L. (Lamiaceae), studies on its analgesic and anti-inflammatory properties have been scarce. OBJECTIVE: The aim of this work was to use in vivo models to evaluate the analgesic and anti-inflammatory activities of the aqueous extracts obtained from leaves (AEL) and stems (AES) of Rosmarinus officinalis, as well as its isolated compound--rosmarinic acid (RA). We also prepared and assessed the acetyl ester derivative of RA. MATERIALS AND METHODS: The analgesic activity was evaluated using abdominal constriction and formalin tests. For the evaluation of the anti-inflammatory effects, carrageenin-induced paw edema in rats were used. The extracts were used at doses of 100, 200 and 400 mg kg⁻¹ compounds were tested at 10, 20 and 40 mg kg⁻¹. RESULTS: Orally administered AEL, AES and RA were not significantly active at any of the doses tested during the abdominal constriction test; the acetyl ester derivative of RA displayed significant analgesic activity. In the carrageenin-induced paw edema assay, the acetyl derivative of RA at all the tested doses produced significant anti-inflammatory effects and reduced the number of paw licks in the second phase of the formalin test. DISCUSSION AND CONCLUSION: The results suggest that the analgesic effects of the acetyl derivative of RA operate via a peripheral-mediated mechanism. The acetyl ester derivative of RA is potentially applicable as a new lead compound for the management of pain and inflammation.


Assuntos
Anti-Inflamatórios não Esteroides/uso terapêutico , Cinamatos/uso terapêutico , Depsídeos/uso terapêutico , Modelos Animais de Doenças , Neuralgia/prevenção & controle , Inflamação Neurogênica/prevenção & controle , Extratos Vegetais/uso terapêutico , Rosmarinus/química , Acetilação , Administração Oral , Animais , Anti-Inflamatórios não Esteroides/isolamento & purificação , Comportamento Animal/efeitos dos fármacos , Brasil , Cinamatos/administração & dosagem , Cinamatos/química , Cinamatos/isolamento & purificação , Depsídeos/administração & dosagem , Depsídeos/química , Depsídeos/isolamento & purificação , Relação Dose-Resposta a Droga , Etnofarmacologia , Masculino , Medicina Tradicional , Camundongos , Extratos Vegetais/administração & dosagem , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação , Folhas de Planta/química , Caules de Planta/química , Ratos , Ratos Wistar , Ácido Rosmarínico
15.
Oxid Med Cell Longev ; 2012: 835970, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22655115

RESUMO

Skeletal muscle function largely depend on intact energy metabolism, stress response, and antioxidant defense mechanisms. In this study, we tested the effect of a combined supplementation of α-lipoic acid (LA) plus coenzyme Q10 (Q10) on PPARγ-coactivator α (PGC1α) activity, expression of glutathione-related phase II enzymes and glutathione (GSH) levels in cultured C2C12 myotubes. Supplementation of myotubes with 250 µmol/L LA plus 100 µmol/L Q10 significantly increased nuclear levels of PGC1α, a master switch of energy metabolism and mitochondrial biogenesis. The increase of nuclear PGC1α was accompanied by an increase in PPARγ transactivation, a downstream target of PGC1α, and an increase in mitochondrial transcription factor A mRNA centrally involved in mitochondrial replication and transcription. Furthermore, supplementation of myotubes with LA plus Q10 resulted in an increase of genes encoding proteins involved in stress response, GSH synthesis, and its recycling. In LA-plus-Q10-treated myotubes a significant 4-fold increase in GSH was evident. This increase in GSH was accompanied by increased nuclear Nrf2 protein levels, partly regulating γGCS and GST gene expression. Present data suggest that the combined supplementation of skeletal muscle cells with LA plus Q10 may improve energy homeostasis, stress response, and antioxidant defense mechanisms.


Assuntos
Metabolismo Energético/efeitos dos fármacos , Glutationa/metabolismo , Células Musculares/metabolismo , Músculo Esquelético/metabolismo , Estresse Fisiológico/efeitos dos fármacos , Ácido Tióctico/farmacologia , Transativadores/metabolismo , Ubiquinona/análogos & derivados , Animais , Diferenciação Celular/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Células Cultivadas , Proteínas de Ligação a DNA/genética , Proteínas de Ligação a DNA/metabolismo , Regulação da Expressão Gênica/efeitos dos fármacos , Proteínas de Grupo de Alta Mobilidade/genética , Proteínas de Grupo de Alta Mobilidade/metabolismo , Camundongos , Modelos Biológicos , Células Musculares/citologia , Células Musculares/efeitos dos fármacos , Músculo Esquelético/citologia , Fator 2 Relacionado a NF-E2/genética , Fator 2 Relacionado a NF-E2/metabolismo , Coativador 1-alfa do Receptor gama Ativado por Proliferador de Peroxissomo , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Estresse Fisiológico/genética , Ácido Tióctico/administração & dosagem , Fatores de Transcrição , Ubiquinona/administração & dosagem , Ubiquinona/farmacologia
16.
Acta Physiol (Oxf) ; 201(2): 265-73, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20698833

RESUMO

AIM: Changes in skeletal muscle morphology and metabolism are associated with limited functional capacity in heart failure, which can be attenuated by neuromuscular electrical stimulation (ES). The purpose of the present study was to analyse the effects of ES upon GLUT-4 protein content, fibre structure and vessel density of the skeletal muscle in a rat model of HF subsequent to myocardial infarction. METHODS: Forty-four male Wistar rats were assigned to one of four groups: sham (S), sham submitted to ES (S+ES), heart failure (HF) and heart failure submitted to ES (HF+ES). The rats in the ES groups were submitted to ES of the left leg during 20 days (2.5 kHz, once a day, 30 min, duty cycle 50%- 15 s contraction/15 s rest). After this period, the left tibialis anterior muscle was collected from all the rats for analysis. RESULTS: HF+ES rats showed lower values of lung congestion when compared with HF rats (P = 0.0001). Although muscle weight was lower in HF rats than in the S group, thus indicating hypotrophy, 20 days of ES led to their recovery (P < 0.0001). In both groups submitted to ES, there was an increase in muscle vessel density (P < 0.04). Additionally, heart failure determined a 49% reduction in GLUT-4 protein content (P < 0.03), which was recovered by ES (P < 0.01). CONCLUSION: In heart failure, ES improves morphological changes and raises GLUT-4 content in skeletal muscle.


Assuntos
Terapia por Estimulação Elétrica , Transportador de Glucose Tipo 4/metabolismo , Insuficiência Cardíaca/complicações , Músculo Esquelético/metabolismo , Doenças Musculares/terapia , Animais , Insuficiência Cardíaca/fisiopatologia , Hemodinâmica , Masculino , Músculo Esquelético/irrigação sanguínea , Músculo Esquelético/patologia , Doenças Musculares/etiologia , Doenças Musculares/metabolismo , Doenças Musculares/patologia , Infarto do Miocárdio/complicações , Ratos , Ratos Wistar
17.
J Anim Sci ; 89(1): 77-83, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20870952

RESUMO

Obesity and insulin resistance are risk factors for laminitis in horses and ponies, and diet can play an important role in modulating these risk factors. Dietary supplementation with prebiotic fibers, such as short-chain fructo-oligosaccharides (scFOS), has resulted in improvement of insulin sensitivity in obese dogs and rodents. Thus, we hypothesized that scFOS may reduce insulin resistance in obese horses and designed a study to evaluate the effect of dietary supplementation with scFOS on insulin sensitivity. Eight mature Arabian geldings (BW = 523.0 ± 56.5 kg) with an average BCS of 8 were included in a crossover study. In each period, 4 horses were provided 45 g/d per horse of maltodextrin (control) and 4 horses received the same amount of scFOS for 6 wk, with a 3-wk washout between periods. Resting plasma concentrations of glucose, insulin, triglycerides, and leptin were measured. Minimal model analysis of a frequently sampled intravenous glucose tolerance test was used to evaluate insulin sensitivity, glucose effectiveness, acute insulin response to glucose, and disposition index. Without affecting BW and BCS, dietary supplementation with scFOS increased (P < 0.05) insulin sensitivity and reduced (P < 0.05) acute insulin response to glucose in comparison with maltodextrin but did not alter (P > 0.05) glucose effectiveness and disposition index. Resting serum insulin concentration also was reduced (P < 0.05) by scFOS supplementation but not by maltodextrin (P > 0.05). There was no effect (P > 0.05) of scFOS supplementation on plasma glucose or serum triglyceride and leptin concentrations. This study demonstrated that scFOS can moderately improve insulin sensitivity of obese horses, a finding that has potential relevance to the dietary management of obese, insulin-resistant horses at increased risk for laminitis.


Assuntos
Suplementos Nutricionais , Doenças dos Cavalos/tratamento farmacológico , Resistência à Insulina/fisiologia , Obesidade/veterinária , Oligossacarídeos/química , Oligossacarídeos/farmacologia , Ração Animal/análise , Animais , Glicemia , Estudos Cross-Over , Dieta/veterinária , Cavalos , Insulina/sangue , Leptina/sangue , Masculino , Triglicerídeos/sangue
18.
Z Naturforsch C J Biosci ; 65(9-10): 588-93, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-21138060

RESUMO

The essential oil of Rosmarinus officinalis L. (rosemary) was obtained by hydro-distillation and analysed by gas chromatography-mass spectrometry. Sixty-two constituents were identified, representing 98.06% of the total oil content. Oxygenated monoterpenes were the predominant components. The rosemary oil was characterized as having prominent (> 5%) contents of camphor (18.9%), verbenone (11.3%), a-pinene (9.6%), beta-myrcene (8.6%), 1,8-cineole (8.0%), and beta-caryophyllene (5.1%). The antimicrobial activity of the oil as well as of its major constituents was tested against the following microorganisms: Streptococcus mutans, Streptococcus mitis, Streptococcus sanguinis, Streptococcus salivarius, Streptococcus sobrinus, and Enterococcus faecalis, which are potentially responsible for the formation of dental caries in humans. The microdilution method was used for determination of the minimum inhibitory concentration (MIC) during evaluation of the antibacterial activity. The essential oil displayed low activity against the selected microorganisms. In the present study, the pure major compounds were more active than the essential oil. Among all the microorganisms tested, the pathogen S. mitis was the most susceptible and E. faecalis was the most resistant to the evaluated samples. This is the first report on antimicrobial activity of the major components of rosemary oil against oral pathogens.


Assuntos
Antibacterianos/farmacologia , Óleos Voláteis/farmacologia , Rosmarinus , Monoterpenos Acíclicos , Antibacterianos/isolamento & purificação , Anti-Inflamatórios não Esteroides/farmacologia , Monoterpenos Bicíclicos , Cânfora/isolamento & purificação , Cânfora/farmacologia , Clorexidina/isolamento & purificação , Clorexidina/farmacologia , Enterococcus faecalis/efeitos dos fármacos , Cromatografia Gasosa-Espectrometria de Massas , Testes de Sensibilidade Microbiana , Monoterpenos/isolamento & purificação , Monoterpenos/farmacologia , Óleos de Plantas/isolamento & purificação , Óleos de Plantas/farmacologia , Sesquiterpenos Policíclicos , Sesquiterpenos/farmacologia , Streptococcus/efeitos dos fármacos , Streptococcus mitis/efeitos dos fármacos , Streptococcus mutans/efeitos dos fármacos , Streptococcus sobrinus/efeitos dos fármacos , Terpenos/isolamento & purificação , Terpenos/farmacologia
19.
Chem Biodivers ; 7(7): 1835-40, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20658673

RESUMO

The in vitro inhibitory activity of crude EtOH/H2O extracts from the leaves and stems of Rosmarinus officinalis L. was evaluated against the following microorganisms responsible for initiating dental caries: Streptococcus mutans, S. salivarius, S. sobrinus, S. mitis, S. sanguinis, and Enterococcus faecalis. Minimum inhibitory concentrations (MIC) were determined with the broth microdilution method. The bioassay-guided fractionation of the leaf extract, which displayed the higher antibacterial activity than the stem extract, led to the identification of carnosic acid (2) and carnosol (3) as the major compounds in the fraction displaying the highest activity, as identified by HPLC analysis. Rosmarinic acid (1), detected in another fraction, did not display any activity against the selected microorganisms. HPLC Analysis revealed the presence of low amounts of ursolic acid (4) and oleanolic acid (5) in the obtained fractions. The results suggest that the antimicrobial activity of the extract from the leaves of R. officinalis may be ascribed mainly to the action of 2 and 3.


Assuntos
Abietanos/farmacologia , Anti-Infecciosos/farmacologia , Extratos Vegetais/farmacologia , Rosmarinus/química , Streptococcus/efeitos dos fármacos , Abietanos/isolamento & purificação , Anti-Infecciosos/isolamento & purificação , Cárie Dentária/tratamento farmacológico , Enterococcus faecalis/efeitos dos fármacos , Testes de Sensibilidade Microbiana , Extratos Vegetais/isolamento & purificação , Folhas de Planta/química , Caules de Planta/química
20.
Phytomedicine ; 17(2): 87-93, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19818588

RESUMO

OBJECTIVE: To investigate if standardised powder made from rose-hip (Rosa canina) can reduce the symptom score in patients with rheumatoid arthritis. METHODS: In a double-blind placebo-controlled trial, patients with rheumatoid arthritis (RA) according to ARA/ACR criteria were randomised to treatment with capsulated rose-hip powder 5g daily or matching placebo for 6 months at two outpatient clinics in Berlin and Copenhagen. Primary outcome variable was Health Assessment Questionnaire (HAQ) at 6 months, secondary outcome included DAS-28, physician's global evaluation of disease activity, RAQoL, SF-12 and concomitant pain medication. RESULTS: In a total of 89 patients (90% female, mean age 56.6+11.3 years, mean disease duration 12.8+9.6 years) HAQ-DI in the rose-hip group improved by 0.105+/-0.346, whereas in the placebo group it worsened by 0.039+/-0.253 (p adjusted=0.032). In the HAQ Patient Pain Scale no significant differences were observed between both groups. In the HAQ Patient Global Scale a trend was seen favouring rose-hip (p=0.078). The DAS-28 score yielded improvement in the rose-hip group of 0.89+/-1.32 and in the placebo group of 0.34+/-1.27 (p=0.056) indicating moderate clinical relevance. The Physicians Global Scale demonstrated more improvement in the rose-hip compared to the placebo group (p=0.012). RAQoL and SF-12 physical score improved significantly in the rose-hip group compared to placebo, whereas SF-12 mental score remained unchanged. Intake of pain medication was not different between the groups. Per-protocol analysis confirmed these results. CONCLUSION: The results indicate that patients with RA may benefit from additional treatment with rose hip powder.


Assuntos
Artrite Reumatoide/tratamento farmacológico , Dor/tratamento farmacológico , Fitoterapia , Preparações de Plantas/uso terapêutico , Rosa , Idoso , Artrite Reumatoide/complicações , Método Duplo-Cego , Feminino , Frutas , Humanos , Masculino , Pessoa de Meia-Idade , Dor/etiologia , Pós
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