To develop a live vaccine strain against fowl typhoid and paratyphoid caused by Salmonella serovar Gallinarum biovar Gallinarum (Salmonella Gallinarum) and Salmonella serovar Enteritidis (Salmonella Enteritidis), respectively, several nalidixic acid resistant mutants were selected from lipopolysaccharide (LPS) rough strains of Salmonella Gallinarum that escaped from fatal infection of a LPS-binding lytic bacteriophage. A non-virulent and immunogenic vaccine strain of Salmonella Gallinarum, SR2-N6, was established through in vivo pathogenicity and protection efficacy tests. SR2-N6 was highly protective against Salmonella Gallinarum and Salmonella Enteritidis and safer than Salmonella Gallinarum vaccine strain SG 9R in the condition of protein-energy malnutrition. Thus, SR2-N6 may be a safe and efficacious vaccine strain to prevent both fowl typhoid and paratyphoid.
Bacteriophages ; Nalidixic Acid ; Protein-Energy Malnutrition ; Salmonella ; Salmonella enteritidis ; Typhoid Fever* ; United Nations ; Virulence

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*

Experiments were conducted to define the optimal constituents of culture medium and atmospheric condition for growth of Campylobacter pylori. Two clinical isolates were streaked onto various media, incubated in two different atmospheric conditions (microaerophilic condition and carbon dioxide incubator), and growth was assessed semiquantitatively according to relative colony size and extent of growth through the streak. The growth obtained on Campy media, composed of GC agar base plus 1% hemoglobin, 0.2% activated charcoal, 1% IsoVitaleX, vancomycin 6mg /L nalidixic acid 20mg/L and amphotercin 2 mg/L, was used as reference. Our conclusions were as follows: Tryptic soy agar base was not acceptable for the growth of C. pylori. The organism grew in both atmospheric conditions, but generally showed a scantier growth in the carbon dioxide incubator than under the microaerophilic condition, however GC agar containing 1% hemoglobin and 0.2% activated charcoal supported well the growth of C. pylori in the carbon dioxide incubator. The authors have found that the GC agar base supplemented with 1% hemoglobin and 0.2% charcoal was the most satisfactory medium and a microaerophilic condition was optimal atmospheric condition for the growth of Campylobacter pylori in this study.
Agar ; Biopsy* ; Campylobacter* ; Carbon Dioxide ; Charcoal ; Helicobacter pylori* ; Incubators ; Nalidixic Acid ; Vancomycin

This study was performed for the assessing the distribution, drug resistance and its transferability, and cell agglutinating ability of Enterobacteriaceae isolated from urine of patients with urinary tract infection. Total 164 strains of Strains of Enterobacteriaceae including, 91 strains of E. coli, 35 strains of klebsiella, 23 strains of Proteus, 6 strains of Serratia, 6 strains of Citrobacter, 3 strains of Enterobacteriaceae were isolated from urine. In the cell agglutinating test, most organisms, except Proteus, showed mannose resistant agglutination. Among organisms tested more than 20 strains, E. coli showed highest frequency of cell agglutination. In the comparison of cell agglutinating characteristics of E. coli and Klebsiella isolated from urine and other sources urinary isolates of E. coli showed higher frequency of agglutination and greater agglutinating potency than isolates from other sources, but Klebsiella showed little difference between isolates of urine and other sources. Urinary isolates usually showed high frequency of resistance to penicillin(90%), ampicillin(89%). sulfamethoxazole(69%), tetracycline(66%), chloramphenicol(53%), but showed low frequency of resistance to moxalactam(1%), amikacin(2%), and nalidixic acid (9%), and these resistance were highly transferable resistance mediated by R plasmid.
Agglutination ; Citrobacter ; Drug Resistance* ; Enterobacteriaceae ; Humans ; Klebsiella ; Mannose ; Nalidixic Acid ; Plasmids ; Proteus ; Serratia ; Urinary Tract Infections

As many Koreans now travel abroad, they are at increased risk for a variety of infectious diseases that are endemic to developing countries in the tropics and subtropics. We report two cases of co-infection with Giardia lamblia and Salmonella species not susceptible to nalidixic acid, after travel abroad.
Coinfection ; Communicable Diseases ; Developing Countries ; Giardia ; Giardia lamblia ; Nalidixic Acid ; Salmonella

OBJECTIVES: To determine the occurrence and antimicrobial resistance of pathogenic vibrios from green mussel, Perna viridis in bacoor bay cavite.

METHODS: Vibrios were isolated using TCBS agar and confirmed using API Identification kit. The relationship between the density of vibrios and environment parameters such as months, harvest sites and other physico-chemical parameters of water was determined. The isolated vibrios were subjected to antibiotic resistance testing to determine the resistance patterns.

RESULTS: Pathogenic vibrios were isolated in all of the 90 mussel samples. Of the 183 vibrio isolates, 75 strains were V. alginolyticus and 53 strains belonged to V. cholerae wherein 18 (34%) of these were V. cholerae serotype O1. Forty nine (49) strains belonged to V. parahaemolyticus and six were V. vulnificus. Using the regression analysis, salinity, water temperature and ph have significant correlation on the density of vibrios (p=0.0309), with regression model, total vibrios = -16990763 + 145858 Salinity + 186808 Temperature + 1037886 pH. In the antimicrobial resistance assay,ampicillin had the highest drug resistance (37.8%) followed by nalidixic acid (10.4%), tetracycline (10.4%) and co-trimoxazole (9.3%).

CONCLUSION: Pathogenic vibrios were isolated in mussel of Bacoor, Cavite and can be predicted using salinity, temperature and pH of the water. Thirty six percent (36%) of Vibrio isolates were resistance to ampicillin.

Oxolinic acid is a weak-organic acid which developed recently from Nalidixic acid. Author reports a clinical observation about the effect of oxolinic acid on patients of genito-urinary tract infection, who visited to our O.P.D. from May 1976 to Nov. 1976. Daily dose is 1.5gm per oral for 5-28 days. 1. Among 12 cases of nongonococcal urethritis, excellent and good effects are obtained in 10 cases. 2. Among 9 cases of Gonococcal urethritis, excellent effects are resulted in 7 cases. 3. Among 6 cases of acute cystitis, excellent in 4 cases and good result in 2 cases are noted. 4. Among 5 cases of chronic prostatitis, only 1 case excellent and good effects are noted in 2 cases. 5. Among 3 cases of epididymitis, good effects are seen in 2 cases. 6. On 2 cases of chronic cystitis, 1 case is excellent and no effect in 1 case is noted. 7. On 1 case of pyelonephritis, no effect is obtained. 8. Oxolinic acid has the antibacterial activity in 11 cases of 17 cases staphylococcus & streptococcus infections, 7 cases of 9 cases gonococcus infections, and 1 case of 2 cases proteus infections. No significant toxicity is seen through the course of therapy.
Cystitis ; Epididymitis ; Humans ; Male ; Nalidixic Acid ; Neisseria gonorrhoeae ; Oxolinic Acid* ; Prostatitis ; Proteus Infections ; Pyelonephritis ; Staphylococcus ; Streptococcus ; Urethritis

Twenty-six nalidixic acid-resistant Shigella sonnei strains isolated from 1982 to 2001 and 56 nalidixic acid-resistant mutants induced by quinolone drugs from susceptible wild strains were analyzed by sequencing the gyrA gene. All the 22 nalidixic acid-resistant isolates from 1998 to 2001 showed identical amino acid substitution of Ser to Leu (TCG --> TTG) at codon 83 while 7 different mutation types were detected in artificially induced nalidixic acid-resistant mutants. Asp87 (GGC) type was observed most commonly among mutants induced by nalidixic acid while Ser83 (TTG) type was common among mutants induced by ciprofloxacin or norfloxacin. All the isolates collected between 1998 and 2001 showed identical or nearly identical pulsed-field gel electrophoresis pattern. These results suggest that the explosive increase of S. sonnei infection after 1998 was mainly due to the spread of restricted number of clones resistant to nalidixic acid.
Amino Acid Substitution ; Ciprofloxacin ; Clone Cells ; Codon ; Electrophoresis, Gel, Pulsed-Field ; Epidemiology ; Molecular Epidemiology* ; Nalidixic Acid* ; Norfloxacin ; Shigella sonnei* ; Shigella*

BACKGROUND: The photsensitizing effect of quinolones has been recognized since their introdulation as an antibacterial agents. Recently several new second eneration antibacterial agents of this pharmacological class have become available for therapy, and are gaining increasing impotance. OBJECTIVE: To reveal the phototoxic potentials of some new quinolones by photohemolysis test, estimation of fluorescenc spectra, and Candida albicans test. METHODS: Nalidixic acid and four second-generation quinolones(ciprofloxacin, enoxacini, norfloxacin, and ofloxacitid were examined by fluorescence spertra which measured t.he phototoxc potentials by photochemial instability, photohemolsis test for the phototoxic properties against cell membranes and Candida tlbicans test for phototoxic properties against DNA. RESULTS: All drugs showed a fluorescence spectra within 360 nm to 450 nm, and in the photohemolysis test, all studied drug except ofloxacin got above 5% hemolytic value, and all drugs showed clear zone. in Candida albicans test after 48hours. CONCLUSION: These results suggested that all tested drugs were photochemically unstable. According to the mechanisris of cellular phototoxicity, ciprofloxacin, enoxacin, and norfloxacin was phtototoxic to nucleus and cell membrane, whereas ofloxacin was phototoxic to nucleus only.
Anti-Bacterial Agents* ; Candida ; Candida albicans ; Cell Membrane ; Ciprofloxacin ; Dermatitis, Phototoxic ; DNA ; Enoxacin ; Fluorescence ; Nalidixic Acid ; Norfloxacin ; Ofloxacin ; Quinolones

Infection with nontyphoidal Salmonella most often results in self-limited acute gastroenteritis. However, occasionally it causes bacteremia and localized infection requiring antibiotic treatment. A third-generation cephalosporin or fluoroquinolone is often the first choice of antibiotic. However, there has been an increase in nalidixic-acid-resistant nontyphoidal Salmonella with decreased fluoroquinolone susceptibility. Although there have been many cases reported of nontyphoidal Salmonella, no cases of nalidixic-acid-resistant nontyphoidal Salmonella have been reported in Korea. Here, we report on the case of a 61-year-old man with a diagnosis of acute osteomyelitis and periosteal abscess of the femur caused by nalidixic-acid-resistant Salmonella enteritidis. He was treated successfully with prolonged administration of a high-dose of ciprofloxacin and drainage of the abscess.
Abscess ; Bacteremia ; Ciprofloxacin ; Diagnosis ; Drainage ; Drug Resistance ; Femur* ; Gastroenteritis ; Humans ; Korea ; Middle Aged ; Nalidixic Acid ; Osteomyelitis* ; Salmonella ; Salmonella enteritidis*