Drugs online research references
J Chromatogr A. 2004 Jan 2;1022(1-2):125-9.
Liquid chromatography with ultraviolet absorbance detection for the analysis of tetracycline residues in honey.
Vinas P, Balsalobre N, Lopez-Erroz C, Hernandez-Cordoba M.
Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, E-30071 Murcia, Spain.
The separation of tetracyclines (TCs) using reversed-phase liquid chromatography (LC) is proposed. The use of an amide-based stationary phase prevents the interaction of tetracyclines with the residual silanol groups and thus avoids the appearance of tailed peaks. Detection was based on using an UV spectrophotometer and gradient elution with acetonitrile-oxalic acid as mobile phase permitted good separation of all the peaks. Specificity was demonstrated by the retention characteristics, UV spectra and peak purity index. Linearity, precision, recovery and sensitivity were satisfactory. The procedure was applied to the analysis of tetracycline residues (tetracycline, oxytetracycline (OTC), chlortetracycline (CTC), doxycycline (DC), minocycline (MINO) and methacycline (MTC)) in honey of different types. Extraction involved using a mild acidic solvent containing EDTA to release protein-bound or sugar-bound tetracyclines. For the clean-up step, solid phase extraction using phenyl cartridges was applied. Detection limits in the honey using the proposed procedure are between 15 and 30 ng g(-1), depending on the tetracycline.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14753778&dopt=Abstract [PubMed - in process]
ucalgary.ca
Axonal injury and neuronal loss are now recognised to be hallmarks of multiple sclerosis (MS) in addition to neuroinflammation and demyelination. This review discusses the factors that contribute to neural degeneration, and it emphasizes the need to confer neuroprotection in MS. The beneficial role of neuroinflammation is highlighted, and the possibility that glatiramer acetate enables neuroprotection in MS through beneficial inflammation is evaluated. Finally, the prospect of an experimental treatment, minocycline, in producing neuroprotection in MS is suggested.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14766415&dopt=Abstract [PubMed - in process]
Nihon Kokyuki Gakkai Zasshi. 2004 Jan;42(1):89-93.
[A case of septic pulmonary embolism induced by urinary tract infection]
[Article in Japanese]
Kiwamoto T, Endo T, Sekizawa K.
Department of Respiratory Medicine, Mito Kyodo General Hospital, 3-2-7, Miyamachi, Mito City, Ibaraki 310-0015, Japan.
A 73-year-old male in whom diabetes mellitus and benign prostatic hypertrophy had been diagnosed was hospitalized with a urinary tract infection (UTI) showing urinary retention and a high grade fever. His symptoms worsened although several antibiotics were administered after admission. A chest radiograph shows multiple nodular lesions and cavity formations in both lung fields. Arterial blood gas analysis showed hypoxia and hypocapnia. Pulmonary perfusion scintigraphy revealed perfusion defects corresponding to the nodular lesions observed on the chest radiograph. Enhanced abdominal CT demonstrated abscesses in the liver and kidney; and in urine and blood cultures, Klebsiella pneumoniae was isolated. We therefore diagnosed septic pulmonary embolism (SPE) occurring secondary to UTI. After diagnosis, the patient was given intravenous imipenem/cilastatin, minocycline and ciprofloxacin, and recovered. Although SPE occurring secondary to UTI is very rare, the incidence of SPE has recently increased in patients with DM. Therefore, we should consider the possibility of SPE in patients with DM who have respiratory symptoms.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14768371&dopt=Abstract [PubMed - in process]
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