Methenamine
Mostrando 1-12 de 47 artigos, teses e dissertações.
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1. Case for diagnosis. Keloidal cord-like lesion on the leg,
Abstract We report a 74-year-old male presented to an outpatient dermatology clinic in Manaus, Amazonas, with a one-year history of pruritic, keloidal lesions on his left lower extremity. Histopathology showed round structures in reticular dermis. Grocott methenamine silver stain revealed numerous round yeasts with thick double walls, occurring singly or in
An. Bras. Dermatol.. Publicado em: 2020-06
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2. Cranberries for preventing urinary tract infections
BACKGROUND: Cranberries have been used widely for several decades for the prevention and treatment of urinary tract infections (UTIs). This is the third update of our review first published in 1998 and updated in 2004 and 2008. OBJECTIVES: To assess the effectiveness of cranberry products in preventing UTIs in susceptible populations. METHODS: Sea
Sao Paulo Med. J.. Publicado em: 2013
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3. Análise descritiva da histopatologia criptocóccica / Analisis descritiva of the cryptococcal histopatology
A identificação histopatológica dos agentes fúngicos é um método excelente de diagnóstico, devido ao fato de que as estruturas são facilmente identificadas por meio das técnicas histoquímicas. Até o momento, não dispõem-se de métodos aceitáveis para quantificação da atividade da infecção. Esta investigação protocola um método de estimat
Publicado em: 2010
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4. Leishmania (Leishmania) chagasi-infected mice as a model for the study of glomerular lesions in visceral leishmaniasis
Renal involvement in visceral leishmaniasis (VL) is very frequent but the pathogenesis of this nephropathy is poorly understood. In previous studies using dogs with VL we have detected new immunopathological elements in the glomeruli such as T cells and adhesion molecules. Although Leishmania (Leishmania) chagasi-infected dogs and hamsters are considered to
Brazilian Journal of Medical and Biological Research. Publicado em: 2007-06
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5. Resistencia da união e qualidade de camada hibrida segundo a forma de interação dos sistemas adesivos a dentina / Tensile bond strength and quality of hybrid layer of adhesive systems according to dentin interaction
O objetivo foi avaliar a resistência da união e qualidade de camada híbrida de acordo com o modo de interação de diferentes sistemas adesivos com a dentina. Para a avaliação da resistência da união à tração foram utilizados sete terceiros molares humanos hígidos, os quais foram submetidos cortes perpendiculares ao longo eixo do dente para obten�
Publicado em: 2006
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6. Prevention of recurrent acute cystitis by methenamine hippurate: double blind controlled crossover long term study.
In a randomised, double blind, long term, crossover study 1 g twice daily of methenamine hippurate was compared with placebo for its preventive effect on recurrent attacks of acute cystitis. Methenamine hippurate and placebo were interchanged every six months for two years. During one of the years patients took 250 ml extra fluid every morning and evening. O
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7. Combined methenamine-silver nitrate and hematoxylin & eosin stain for fungi in tissues.
Initial examination of hematoxylin & eosin-stained tissue from a human brain specimen did not reveal the fungi which were seen in subsequent tissue sections stained with methenamine-silver nitrate. Microabscesses seen in the hematoxylin & eosin-stained sections were not apparent in the methenamine--silver nitrate-stained tissue. Staining with methenamine--si
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8. Lack of Effect of Methenamine in Suppression of, or Prophylaxis Against, Chronic Urinary Infection
Methenamine is frequently prescribed for patients who have chronic urinary infection to suppress bacterial growth during active infection or to prevent recurrence once an infection has been brought under control. We have examined the effect of methenamine mandelate and ascorbic acid on bacteriuria in para- and quadriplegics from a spinal cord unit. Patients
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9. Potentiation of the Antibacterial Effect of Methanamine by Acetohydroxamic Acid
In vitro testing shows nearly all strains of Proteus to be susceptible to methenamine. However, infection by urease-producing bacteria alkalinizes the urine in vivo and prevents generation of formaldehyde, the active metabolite, from methenamine. We have previously shown acetohydroxamic acid (AHA) to be an effective inhibitor of bacterial urease in vitro and
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10. Location of Polysaccharide on Chlamydia psittaci by Silver-Methenamine Staining and Electron Microscopy
Previous serological studies have indicated that the group antigen of chlamydial organisms is composed of an acidic polysaccharide and a lipid component. The present study was undertaken in an effort to locate this polysaccharide complex by use of electron microscopy and a silver-methenamine marker. The meningopneumonitis strain of Chlamydia psittaci was pro
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11. Generation of Formaldehyde from Methenamine: Effect of pH and Concentration, and Antibacterial Effect
Using an in vitro system that simulates the dynamics of the urinary tract, we have shown that concentrations of formaldehyde ≥ 25 μg/ml can be achieved in urine containing ≥ 0.6 mg of methenamine per ml at pH ≤ 5.7 or ≥ 1 mg/ml at pH ≤ 5.85. Exposure to this concentration of formaldehyde for 2 h produced a measurable antibacterial effect. These st
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12. Ultrastructural localization of carbohydrates on thin sections of Staphylococcus aureus with silver methenamine and wheat germ agglutinin-gold complex.
Postembedding staining of intracellular carbohydrates on thin sections of Staphylococcus aureus was studied by the silver methenamine and the wheat germ agglutinin-gold techniques. Staining of silver grains was observed on both the cell wall and the cross wall. The staining was interpreted to be due to teichoic acid. Labeling by wheat germ agglutinin-gold pa