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| Luz,Ana Júlia; Poeta,Júlia; Linden,Rafael; Antunes,Marina Venzon; Caminha,Luiza Isola; Sprinz,Eduardo. |
| OBJECTIVE: To evaluate the factors associated with plasma concentrations of atazanavir (ATV) in a cohort of well-controlled HIV infected subjects (undetectable viremia). Design: Cross-sectional study where 69 subjects were consecutively enrolled between April and November, 2011. METHODS: Patients had to be on atazanavir for at least six months, undetectable viral load for a period equal to or longer than 12 months, T CD4+ lymphocyte count higher than 200 cells/mm³, and aged between 18 years and 70 years old. Exclusion criteria were pregnancy, any neurologic disease, active opportunistic disease, hepatitis or cancer. Atazanavir plasma levels were measured by ultra-performance liquid chromatography. RESULTS AND DISCUSSION: Overall, 54 patients (mean age of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atazanavir; Plasma levels; Drug concentration; Ritonavir; Lipid profile. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600006 |
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| Castilhos,Juliana Kich; Dillenburg,Thaís Luise; Antunes,Marina Venzon; Scribel,Letícia; Zavascki,Alexandre Prehn; Linden,Rafael; Verza,Simone Gasparin. |
| Polymyxins are a group of antibacterial substances and have remained the drugs of choice for treatment of resistant Gram-negative bacilli. Polymyxin B is administered by intravenous infusion and requires the reconstitution of lyophilized powder with 0.9% saline or 5% glucose solutions. To date, there is little information about polymyxin stability in different infusions solutions, especially at 40 ºC, a temperature that is recommended to study drug stability as it accelerates degradation reactions. Therefore, in this work an analytical method using LC-MS/MS was developed, validated and applied to determine the stability of polymyxin B diluted in 0.9% saline or 5% glucose solutions at 25 ºC and 40 ºC. The stability of polymyxin B solutions was evaluated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Polymyxin; Stability; LC-MS/MS; Glucose solutions; Saline solutions. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100537 |
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