Objective: This paper demonstrated the effectiveness of intrastromal injection of levofloxacin 1.5% ophthalmic solution in the management of recalcitrant Gram-positive bacterial keratitis. Methods: This is a report on two cases of recalcitrant bacterial keratitis encountered at the External Diseases and Cornea Clinic of the Department of Ophthalmology and Visual Sciences at the Philippine General Hospital. Results: Two middle-aged females presented with bacterial keratitis unresponsive to previous antibiotic treatment with impending corneal perforation. The Gram stain of the corneal scraping in the first case revealed Gram-positive cocci, while the second case showed encapsulated Gram-positive bacilli and encapsulated Grampositive cocci in chains. In both cases, repeated intrastromal injections of levofloxacin 1.5% in addition to increasing the frequency of topical levofloxacin 1.5% resulted in marked improvement in visual acuity and resolution of deep stromal infiltrates and hypopyon. Conclusion These cases highlighted the utility of intrastromal levofloxacin 1.5% ophthalmic solution in the management of recalcitrant Gram-positive bacterial keratitis.
Fluoroquinolones ; Levofloxacin

No abstract available.
Aged ; Humans ; Levofloxacin ; Plasma

Purpose: This study compared the safety outcomes of two intracameral fluoroquinolone antibiotics, moxifloxacin and levofloxacin, as prophylaxis treatment in eyes that underwent uncomplicated cataract surgery. Methods: This is a prospective, double-masked, randomized, interventional, single-center clinical trial. Eyes with visually-significant cataracts underwent phacoemulsification and received preservative-free intracameral 0.5% moxifloxacin [58 eyes (M group)] or 0.5% levofloxacin [56 eyes (L group)] at the end of the surgery as antibiotic prophylaxis. The following safety parameters were evaluated postoperatively at Day 1, Week 1 and Month 1: central retinal thickness (CRT), macular volume (MV), central corneal thickness (CCT), and endothelial cell density (ECD). In-between group comparison was made at each of the 4 study visits using Student’s t-test. Results: Both M and L groups had similar baseline characteristics. There were no significant differences in CRT, MV, CCT and ECD between the 2 groups at each time point in the study. There were no significant differences in the mean changes in CRT, MV, CCT and ECD from baseline to final visit between the 2 groups. No study-related adverse events were observed during the study period. Conclusion Intracameral application of preservative-free 0.5% moxifloxacin and 0.5% levofloxacin appear to have similar safety outcomes when used as antibacterial prophylaxis among eyes undergoing cataract surgery. Based on the results, both fluoroquinolone agents are potentially suitable options for endophthalmitis chemoprophylaxis.
Levofloxacin ; Moxifloxacin ; Fluoroquinolones

BACKGROUND/AIMS: For the investigation of the efficacy and safety of intravenous levofloxacin, The clinical study was carrried out in 30 patients with abdominal operation, especially in hepatobiliary and pancreatic division. METHODS: Randomly chosen patients received intravenous levofloxacin (250mg bid) for only 7 days. Clinical and microbiological evaluation were conducted on the day of starting and finishing levofloxacin treatmeat except for the case of combined use of antibiotics. RESULTS: The most commonly isolated organism was staphylococcus aureus(33%, 3/9). The overall bacteriologic eradication rate was 67%, (6/9) with clinical success rate was 96%(29/30), There were no significant dverse effects to stop the administration of the drug. CONCLUSION: These results suggest that intravenous levofloxacin is effective and safe antibiotics in the fields management of abdominal operation especially in hepatobiliary and pancreas surgery.
Anti-Bacterial Agents ; Humans ; Levofloxacin* ; Pancreas ; Staphylococcus

PURPOSE: Antibiotic is widely used in the treatment of chronic prostatitis. In this study, we evaluated the clinical efficacy and safety of levofloxacin (Cravit(R)) in the treatment of patients with chronic prostatitis. MATERIALS AND METHODS: Between March 2001 and February 2003, 64 patients with chronic bacterial (NIH-category II) and nonbacterial inflammatory prostatitis (NIH-category IIIa) were enrolled in this study. Daily 400 mg of levofloxacin was administered orally for 4-18 weeks. To determine the efficacy of levofloxacin, patients were assessed with the NIH-CPSI and examined of expressed prostatic secretion (EPS) at 3 months follow-up period. RESULTS: The CPSI of 16 patients stratified into NIH-category II was 24.9+/-4.7 before and 14.1+/-6.5 after the treatment. For 48 patients stratified into NIH-category IIIa, the CPSI value before and after the treatment was 23.9+/-4.4 and 13.2+/-5.7, respectively. 40 patients (62.5%) showed mild to moderate improvement in NIH-CPSI, and 23 patients (35.9%) showed improvement in the laboratory profile according to the count of leukocytes (WBC <10/HPF) in EPS. Adverse reaction was noted in 1 patient during the treatment. Conclusions:This study shows that levofloxacin may be a safe and effective agent in treating either chronic bacterial prostatitis or chronic nonbacterial inflammatory prostatitis with few adverse reactions.
Follow-Up Studies ; Humans ; Leukocytes ; Levofloxacin* ; Prostatitis*

PURPOSE: Antibiotic is widely used in the treatment of chronic prostatitis. In this study, we evaluated the clinical efficacy and safety of levofloxacin (Cravit(R)) in the treatment of patients with chronic prostatitis. MATERIALS AND METHODS: Between March 2001 and February 2003, 64 patients with chronic bacterial (NIH-category II) and nonbacterial inflammatory prostatitis (NIH-category IIIa) were enrolled in this study. Daily 400 mg of levofloxacin was administered orally for 4-18 weeks. To determine the efficacy of levofloxacin, patients were assessed with the NIH-CPSI and examined of expressed prostatic secretion (EPS) at 3 months follow-up period. RESULTS: The CPSI of 16 patients stratified into NIH-category II was 24.9+/-4.7 before and 14.1+/-6.5 after the treatment. For 48 patients stratified into NIH-category IIIa, the CPSI value before and after the treatment was 23.9+/-4.4 and 13.2+/-5.7, respectively. 40 patients (62.5%) showed mild to moderate improvement in NIH-CPSI, and 23 patients (35.9%) showed improvement in the laboratory profile according to the count of leukocytes (WBC <10/HPF) in EPS. Adverse reaction was noted in 1 patient during the treatment. Conclusions:This study shows that levofloxacin may be a safe and effective agent in treating either chronic bacterial prostatitis or chronic nonbacterial inflammatory prostatitis with few adverse reactions.
Follow-Up Studies ; Humans ; Leukocytes ; Levofloxacin* ; Prostatitis*

Green nail syndrome is characterized by greenish discoloration of the nail. It is caused by Pseudomas aeruginosa which is an aerobic gram-negative rod found in moist environment. The most common predisposing factors are frequent exposure to water and trauma history. Herein, we report two cases of green nail syndrome who developed greenish discoloration of finger nails, which were treated by systemic levofloxacin and gentian violet application.
Causality ; Fingers ; Gentian Violet ; Levofloxacin ; Pseudomonas aeruginosa ; Water

BACKGROUND: Fluoroquinolones (FQs) are important drugs for treating multidrug-resistant tuberculosis (MDR-TB). However, due to widespread use of FQs, the resistance rates to FQs have been increasing among Mycobacterium tuberculosis. Rapid and reliable FQ drug susceptibility testing (DST) is crucial for successful treatment of MDR-TB. In this study, the feasibility of molecular detection of FQ resistance was evaluated. METHODS: A total of 95 MDR-TB isolates were collected from Jan through Oct 2009 at the Korean Institute of Tuberculosis. DST for ofloxacin (OFL), levofloxacin, and moxifloxacin was performed using the Lowenstein-Jensen media absolute concentration method. Minimum inhibitory concentrations (MIC) of these were determined using the broth microdilution method. DNA was extracted from cultured isolates using bead beating method. The quinolone resistance-determining region (QRDR) of gyrA and gyrB were amplified and those sequences were analyzed. RESULTS: Of 95 isolates, 79 were resistant to at least one of FQs. Of these, 71 (89.9%) harbored mutation in the QRDR of gyrA or gyrB. None of FQ susceptible strains possessed any mutation in gyrA or gyrB. Mutations in codon 94 of gyrA were most common; only two isolates had mutation in only the gyrB gene. OFL MICs for isolates with gyrA mutation ranged from 1 to 32 microg/mL, but FQ susceptible isolates showed MICs ranging from < or =0.06 to 0.5 microg/mL. CONCLUSION: Mutation analysis of QRDR of gyrA and gyrB showed 89.9% sensitivity and 100% specificity for detecting FQ resistance in MDR-TB. Therefore, molecular DST can be useful for rapid detection of FQ resistance in MDR-TB.
Codon ; DNA ; Fluoroquinolones ; Levofloxacin ; Microbial Sensitivity Tests ; Mycobacterium tuberculosis* ; Ofloxacin ; Tuberculosis ; Tuberculosis, Multidrug-Resistant

Turtle-borne Salmonella enterica owns significance as a leading cause in human salmonellosis. The current study aimed to determine the quinolone susceptibility and the genetic characteristics of 21 strains of S. enterica subsp. enterica isolated from pet turtles. Susceptibility of four antimicrobials including nalidixic acid, ciprofloxacin, ofloxacin, and levofloxacin was examined in disk diffusion and MIC tests where the majority of the isolates were susceptible to all tested quinolones. In genetic characterization, none of the isolates were positive for qnr or aac(6')-Ib genes and no any target site mutations could be detected in gyrA, gyrB, and parC quinolone resistance determining regions (QRDR). In addition, neighbor-joining phylogenetic tree derived using gyrA gene sequences exhibited two distinct clads comprising; first, current study isolates, and second, quinolone-resistant isolates of human and animal origin. All results suggest that studied strains of S. enterica subsp. enterica isolated from pet turtles are susceptible to quinolones and genetically more conserved with regards to gyrA gene region.
Animals ; Ciprofloxacin ; Diffusion ; Humans ; Levofloxacin ; Nalidixic Acid ; Ofloxacin ; Quinolones ; Salmonella enterica* ; Salmonella Infections ; Salmonella* ; Trees ; Turtles*

PURPOSE: To evaluate the penetration capability of Levofloxacin and Ciprofloxacin into prostatic tissue, we analysed the concentration of each drug in serum and prostatic tissue simultaneously after oral administration. MATERIALS AND METHODS: Eleven patients with benign prostatic hyperplasia treated with transurethral resection of the prostate were entered in this study. A single dose of 200mg Levofloxacin(LVFX) and 250mg ciprofloxacin(CPFX) were administered orally. Two hours after administration, blood and prostatic tissue samples were taken during operation. Concentration of each drug in serum and prostatic tissue was measured simultaneously by high performance liquid chromatography. RESULTS: The mean concentration of LVFX in serum was 1.970 +/- 0.759 microgram/ml, which was significantly higher than that of CPFX(0.903 +/- 0.291 microgram /ml)(p < 0.05). The mean concentration of LVFX in prostatic tissue(2.256 +/- 1.121 microgram/g), however, was not significantly different from that of CPFX(2.395 +/- 0.846 microgram/g). And the concentration ratio(tissue/serum concentration) of LVFX and CPFX was 1.16 and 2.76, respectively. CONCLUSIONS: These results show that LVFX is not superior to CPFX with respect to the penetration capability into prostatic tissue. Considering that the concentration of LVFX in prostatic tissue was higher than that in serum and not different from that of CPH, LVFX may be another potential effective agent in treating patients with chronic bacterial prostatitis.
Administration, Oral ; Chromatography, Liquid ; Ciprofloxacin* ; Humans ; Levofloxacin* ; Prostate ; Prostatic Hyperplasia ; Prostatitis