Nalidixic acid, synthetic 1,8-naphthyridine, is a spectrum antimicrobial agent. Nalidixic acid is against a variety of microorganisms, it is against with Escherichia coli, Pasteurella spp., Klebsiella pneuiiioniae, Aerobacter aeroyenes, Proteus spp., Salmonella spp., Shigella spp. and Brucella spp. with MIC values of 5.0-12.5 μg/ml, 0.5-2.5 μg/ml, 0.8-25.0 μg/ml, 1.0-25.0 μg/ml, 1.25-30.0 μg/ml, 8-3.2 μg/ml, and 7.5-10.0 μg/ml, respectively. The in vivo activity of Nalidixic acid is most pronounced against Gram-negative bacteria, while Gram-positive organisms are generally more resistant. Maximal activity is observed against systemic infections caused by E. coli, A. aerobacter, Proteus mirabilis, Shigella fkxneri, the ED50 values are 25 mg/kg, 60 mg/kg, 50 mg/kg, and 62 mg/kg, respectively. The acute toxicity (LD50) of Nalidixic acid in mice following oral and parenteral administration is: oral, 3300 mg/kg; intravenous, 176 mg/kg, and subcutaneous, 500 mg/kg[2]. The MIC of nalidixic acid was 700 μg/mL against P. aeruginosa. The exposure of P. aeruginosa to different concentrations of nalidixic acid resulted in deformation of most of the growing cells. At the concentration of 600 μg/mL most of the cells turned into elongated and adhere to each other while some of the cells were bulged. The intensity of protein bands were changed when they exposed to nalidixic acid[3]. The combinations of nalidixic acid + methyl gallate/carvacrol improved nalidixic acid resistant pathogenic bacteria inhibition with synergy or partial synergy activity[4].
United States, Kentucky
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University of Louisville
Recruiting
Louisville, Kentucky, United States, 40202
Contact: Julio A Ramirez, MD 502-852-1148 jarami01@louisville.edu
Contact: David Seligson, MD 502-852-0923 d0seli01@louisville.edu
Sub-Investigator: Forest Arnold, DO
Sub-Investigator: Timothy Wiemkwn, PhD
Sub-Investigator: Robert Kelley, PhD
Sub-Investigator: James Summersgill, PhD
Sub-Investigator: Ruth Carrico, PhD
Sub-Investigator: Julie Harting, PharmD
Sub-Investigator: Paula Peyrani, MD
Principal Investigator: David Seligson, MD
Sub-Investigator: Craig Roberts, MD
Principal Investigator: Julio Ramirez, MD 收起 <<
United States, Illinois
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Loyola University Medical Center
Recruiting
Maywood, Illinois, United States, 60153
Contact: Mary J Tulke, RN 708-216-2067 mtulke@luc.edu 收起 <<
United States, Kentucky
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University of Louisville
Recruiting
Louisville, Kentucky, United States, 40202
Contact: Julio A Ramirez, MD 502-852-1148 jarami01@louisville.edu
Contact: David Seligson, MD 502-852-0923 d0seli01@louisville.edu
Sub-Investigator: Forest Arnold, DO
Sub-Investigator: Timothy Wiemkwn, PhD
Sub-Investigator: Robert Kelley, PhD
Sub-Investigator: James Summersgill, PhD
Sub-Investigator: Ruth Carrico, PhD
Sub-Investigator: Julie Harting, PharmD
Sub-Investigator: Paula Peyrani, MD
Principal Investigator: David Seligson, MD
Sub-Investigator: Craig Roberts, MD
Principal Investigator: Julio Ramirez, MD 收起 <<
United States, Illinois
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Loyola University Medical Center
Recruiting
Maywood, Illinois, United States, 60153
Contact: Mary J Tulke, RN 708-216-2067 mtulke@luc.edu 收起 <<
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