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1.
J Arthroplasty ; 29(1): 167-71, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23711798

RESUMO

In a study of the acetabular component in total hip arthroplasty, 20 hips were operated on using imageless navigation and 20 hips were operated on using the conventional method. The correct position of the acetabular component was evaluated with computed tomography, measuring the operative anteversion and the operative inclination and determining the cases inside Lewinnek's safe zone. The results were similar in all the analyses: a mean anteversion of 17.4° in the navigated group and 14.5° in the control group (P=.215); a mean inclination of 41.7° and 42.2° (P=.633); a mean deviation from the desired anteversion (15°) of 5.5° and 6.6° (P=.429); a mean deviation from the desired inclination of 3° and 3.2° (P=.783); and location inside the safe zone of 90% and 80% (P=.661). The acetabular component position's tomography analyses were similar whether using the imageless navigation or performing it conventionally.


Assuntos
Acetábulo/diagnóstico por imagem , Acetábulo/cirurgia , Artroplastia de Quadril/métodos , Cirurgia Assistida por Computador , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Tomografia Computadorizada por Raios X
2.
Phytomedicine ; 20(1): 71-6, 2012 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-23092722

RESUMO

Indole alkaloids ellipticine (1), cryptolepine triflate (2a), rationally designed 11-(4-piperidinamino)cryptolepine hydrogen dichloride (2b) and olivacine (3) (an isomer of 1) were evaluated in vitro against Plasmodium falciparum and in vivo in Plasmodium berghei-infected mice. 1-3 inhibited P. falciparum (IC50≤1.4 µM, order of activity: 2b>1>2a>3). In vitro toxicity to murine macrophages was evaluated and revealed selectivity indices (SI) of 10-12 for 2a and SI>2.8×10² for 1, 2b and 3. 1 administered orally at 50mg/kg/day was highly active against P. berghei (in vivo inhibition compared to untreated control (IVI)=100%, mean survival time (MST)>40 days, comparable activity to chloroquine control). 1 administered orally and subcutaneously was active at 10 mg/kg/day (IVI=70-77%; MST=27-29 days). 3 exhibited high oral activity at ≥50 mg/kg/day (IVI=90-97%, MST=23-27 days). Cryptolepine (2a) administered orally and subcutaneously exhibited moderate activity at 50mg/kg/day (IVI=43-63%, MST=24-25 days). At 50 mg/kg/day, 2b administered subcutaneously was lethal to infected mice (MST=3 days) and moderately active when administered orally (IVI=45-55%, MST=25 days). 1 and 3 are promising compounds for development of antimalarials.


Assuntos
Antimaláricos/uso terapêutico , Aspidosperma/química , Elipticinas/uso terapêutico , Alcaloides Indólicos/uso terapêutico , Malária/tratamento farmacológico , Fitoterapia , Extratos Vegetais/uso terapêutico , Quinolinas/uso terapêutico , Animais , Antimaláricos/farmacologia , Elipticinas/isolamento & purificação , Elipticinas/farmacologia , Feminino , Alcaloides Indólicos/isolamento & purificação , Alcaloides Indólicos/farmacologia , Macrófagos/efeitos dos fármacos , Malária/parasitologia , Camundongos , Camundongos Endogâmicos , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Plasmodium berghei/efeitos dos fármacos , Plasmodium falciparum/efeitos dos fármacos , Quinolinas/isolamento & purificação , Quinolinas/farmacologia
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