• 한국동물위생학회지
• /
• 제16권2호
• /
• pp.144-149
• /
• 1993

This study was conducted to investigate the infectious arthritis on pigs slaughter in eastern Kangweon. During the period of between Feb. and Nov. 1992, 459 pigs were sampled at six abattoirs. Bacterial isolation and identification were perfomed from the arthritic lesions. In addition, drug susceptibility for the major isolated microoganisms were examined. The results obtained were summarized as follows : 1. From arthritic lesions bacteria were most frequently isolated, isolation rate being 21.1%. 2. The bacteria isolated from arthritic lesion, Staphylococcus spp. (33.9%), Coli form(39.3%) were most frequently isolated, while the genera of Mycoplasma were detected less frequently. 3. Antimicrobial drug susceptibility of the major organisms showed that all the isolated bacteria were susceptible to SXT(91.0%), cephalothin(82.5%), but resisted to penicillin and streptomycin.

• Journal of Microbiology
• /
• 제45권5호
• /
• pp.453-459
• /
• 2007

We developed a multiplex PCR (mPCR) assay to simultaneously detect Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium, Ureaplasma urealyticum, Corynebacterium spp. and seudomona aeruginosa. This method employs a single tube and multiple specific primers which yield 200, 281, 346, 423, 542, and 1,427 bp PCR products, respectively. All the PCR products were easily detected by agarose gel electrophoresis and were sequenced to confirm the specificity of the reactions. To test this method, DNA extracted from urine samples was collected from 96 sexually transmitted disease or prostatitis patients at a local hospital clinical center, and were subjected to the mPCR assay. The resulting amplicons were cloned and sequenced to exactly match the sequences of known pathogenic isolates. N. gonorrhoeae and Corynebacterium spp. were the most frequently observed pathogens found in the STDs and prostatitis patients, respectively. Unexpectedly, P. aeruginosa was also detected in some of the STD and prostatitis samples. More than one pathogen species was found in 10% and 80.7% of STD and prostatitis samples, respectively, indicating that STD and prostatitis patients may have other undiagnosed and associates. The sensitivity of the assay was determined by sing purified DNA from six pathogenic laboratory strains and revealed that this technique could detect pathogenic DNA at concentrations ranging from 0.018 to $1.899\;pg/{\mu}l$. Moreover, the specificities of this assay were found to be highly efficient. Thus, this mPCR assay may be useful for the rapid diagnosis of causative infectious STDs and prostatitis. useful for the infectious STDs and prostatitis.

• Asian-Australasian Journal of Animal Sciences
• /
• 제33권11호
• /
• pp.1699-1713
• /
• 2020

Bovine mastitis, an inflammation of the mammary gland, is the most common disease of dairy cattle causing economic losses due to reduced yield and poor quality of milk. The etiological agents include a variety of gram-positive and gram-negative bacteria, and can be either contagious (e.g., Staphylococcus aureus, Streptococcus agalactiae, Mycoplasma spp.) or environmental (e.g., Escherichia coli, Enterococcus spp., coagulase-negative Staphylococcus, Streptococcus uberis). Improving sanitation such as enhanced milking hygiene, implementation of post-milking teat disinfection, maintenance of milking machines are general measures to prevent new cases of mastitis, but treatment of active mastitis infection is dependant mainly on antibiotics. However, the extensive use of antibiotics increased concerns about emergence of antibiotic-resistant pathogens and that led the dairy industries to reduce the use of antibiotics. Therefore, alternative therapies for prevention and treatment of bovine mastitis, particularly natural products from plants and animals, have been sought. This review provides an overview of bovine mastitis in the aspects of risk factors, control and treatments, and emerging therapeutic alternatives in the control of bovine mastitis.

• 한국동물위생학회지
• /
• 제43권3호
• /
• pp.155-159
• /
• 2020

This study was conducted to investigate the infection of livestock diseases using 500 blood samples from wild boars captured in six cities and one county in northern Gyeonggi province, South Korea. We examined 239 cases of classical swine fever virus (CSFV), and each of 500 cases of foot and mouth disease virus (FMDV), porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus type 2 (PCV2), Mycoplasma hyopneumoniae (MH), Actinobacillus pleuropneumoniae (APP), Pasteurella multocida type A (PMA), Hemophilus parasuis (HP), Salmonella (Sal.) spp. infections. Antibodies were detected against CSFV (23.4%), PRRSV (4.0%), PCV2 (60.4%), MH (3.0%), APP (69.2%), PMA (52.8%), HP (11.8%), and Sal. spp. infections (37.2%). No antibodies were detected against FMDV. As a result of antigenic analysis of 68 positive cases (13.6%) out of 500 PRRS antigen tests, 61 North American cases, 6 European cases, 1 North American-European complex case. PCV2 has 158 positive cases (31.6%) out of 500 antigen tests, and the results indicate that a considerable number of individuals are infected. To our knowledge, this is the first seroprevalence report of MH, APP, PMA, HP, and Sal. spp. infections in wild boars in South Korea.

• 한국동물위생학회지
• /
• 제14권2호
• /
• pp.159-174
• /
• 1991

A field trial of norfloxacin on bovine 206, swine 222 and poultry 205 with respiratory diseases and diarrhea was conducted from Sept 1, 1990 to Jan 30, 1991 in Inchon and Kyonggi-do. The results are as follows. 1. Guinea pigs and rabbits were dosages 10 and 20 times normal. Ten days of observation saw no side effect. 2. Oral treatment on bovine, swine and poultry showed a curing rate of 82.00∼89.06%(Mean 86.00%), compared with 87.27∼96.36%(Mean 92.24%) by Injection. 3. The curing rate was 81.92% by the fourth treatment. 4. The curing rate with and without the use of adjuvant was 80.00∼100% and 83.60∼93. 10%, respectively, for swine, and 81.82∼100% and 82.00∼97.14% for bovine. 5. The curing rate was more dependent on seriousness of illness, environment and time than age. 6. The main disease causing bacteria of bovine respiratory diseases： Haemolytic Sta 27.62%, Haemolytic Str 33.33%, sum of this bacteria is 60.95%, diarrhea: Haemolytic coliform 80.20%, swine respiratory diseases； Haemophilus Spp 20.95%, Haemolytic Sta 72%, Haemolytic Str 21.90%, Sum of these bacteria is 68.57％, diarrhea; Haemolytic coliform 57.26%, poultry respiratory diseases； mycoplasma Spp 29.52%, Haemolytic Sta 13.33％, Sum of this bacteria is 42.85%, diarrhea； Haemolytic coliform 53.00%. 7. The curing rate of norfloxacin by species of strain, the unidentified bacteria on bovine respiratory diseases was the lowest with 77.78％, the others ranged from 84.21％ to 100％ with most of them over 90%. 8. The loss of clinical sign on bovine and swine was the highest when after 2∼4 application. 9. In terms of antibiotic sensitivity test, norfloxacin was the highest with 84.62∼100％ (mean 90.09％) among eight bacterias, only 5 of 15 antibiotics had a sensitivity of over 56.25%, showing a high degree of tolerance.

• 대한수의학회지
• /
• 제44권3호
• /
• pp.427-432
• /
• 2004

The objective of this study was to determine the prevalence of pneumonic bacteria in lungs and nasal swabs of cattle with respiratory diseases. From 95 pneumonic lungs of slaughtered cattle, 41 (43.2%) positive lungs were yielded with 54 pneumonic bacteria, which corresponded to P. multocida (n = 34), A. pyogenes (n = 14) and P. haemolytica (n = 6). One-hundred sixty seven pneumonic bacteria were isolated from 195 nasal swabs in calves, 64.7% (108 isolates) belonged to P. multocida, 16.2% to A. pyogenes, 13.8% to P. haemolytica and 5.4% to H. somnus. Fifty percents (n = 6) of isolates from pneumonic lungs of calves were identified as P. multocida. All isolates of P. multocida belonged to type A according to hyaluronidase test. Antimicrobial susceptibility tests showed that most isolates of P. multocida and P. haemolytica were sensitive to amoxicillin/clavulanic acid, cephalothin, ciprofloxacin, enrofloxacin, fluorophenicol and norfloxacin. The emergence of antimicrobial resistant Pasteurella spp. observed in this study, however, might limit such application. According to histopathological examination, pneumonia by mycoplasma or/and bacteria accounted for 92.8% among 69 pneumonic lungs of slaughtered cattle.

• 대한수의학회지
• /
• 제25권1호
• /
• pp.53-59
• /
• 1985

A group of 80 Holstein calves, many with clinical signs of infectious bovine keratoconjunctivitis in summer seasons, was assembled for bacteriologic and ophthalmologic studies at an integrated dairy farm. Observations were started from 1980 to 1984 but bacteriological study was only carried out from thor spring in 1981 and continued during the Autumn in 1981. Corneal lesions and drugs sensitivity were also observed and the results obtained were as follows: 1. Occurrences of IBK-affected cattle during the 5 years were predominent to calves in summer. 2. Among 142 eyes from 80 cattle, 53 isolates of Moraxella bovis(37.3%) were isolated from 37 cattle(46.3%). The prevalence of the infection for clinical eyes were higher than nonclinical eyes calves. 3. Miscellaneous organisms were found from age groups of 5 months to 9 months old. It were 8 hemolytic Neisseria spp., 3 Fungi, Mycoplasma sp. and 1 Pseudomonas sp., but 9 samples were unknown. 4. Prevalence of infection with M. bovis in bilateral clinical eyes were higher than unilateral eyes. 5. Incidence of corneal lesion was predominent in early stage as a watery tears(21.0%) and late stage as a leukomas of corneal opacity(22.8%). 6. The number of isolations of M. bovis and incidence of IBK varied from year to year; Higher incidence of IBK clinical signs were showed in calves from 5 months to 10 months old and the number of isolations of M. bovis was declined in order 8 months(100.0%), 4 months(75.0%), 5 months(66.6%) and 8 months(66.6%) old calves. 7. Chloramphenicol, Nitrofurantoin and Cephalothin were highly sensitive against M. bovis isolates and then Tetracycline, Neomycin, Erythromycin and Kanamycin were intermediate but low sensitive to Streptomycin, Colistin and Penicillin.

• Tuberculosis and Respiratory Diseases
• /
• 제49권6호
• /
• pp.740-751
• /
• 2000

연구배경 : Moxifloxacin은 광범위한 미생물에 대한 뛰어난 효과, 안전한profile과 유리한 약물동력을 바탕으로 기존의 fluoroquinolones보다 한단계 진보된 약물이라고 할 수 있다. 이러한 효과는 베타-락탐계 혹은 기타 항생제에 내성을 보이는 미생물들에 대해 매우 유효하다. Moxifloxacin은 특히 Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Chlamydia pneumoniae, Legionella spp. 그리고 Mycoplasma pneumoniae에 의해 유발되는 호흡기 감염에 특히 유용하다고 알려져 있다. 방법 : 다기관, 무작위, 공개, 비교시험으로 만성기관지염의 급성악화 환자를 대상으로 moxifloxacin 400 mg 1일 1회 7일 투여와 clarithromycin 500 mg 1일 2회 7일 투여 그룹간의 안전성과 유효성을 비교하였다. 결과 : 170명의 환자 중에서 87명이 moxifloxacin 투여군 이었고 83명이 clarithromycin 투여군이었다. Moxifloxacin 투여군종에서 76명(세균학적 효과분석은 35명), clarithromycin 투여군중에서 77명(세균학적 효과분석은 31명)이 치료효과분석에 포함되었으며 모든 환자에서 안전성을 분석하였다. 임상적 성공율은 Moxifloxacin 투여군 76명중에서 70명(92.1%) 이었고 clarithromycin 투여군 77명중에서 71명(92.2%) 으로 유사하였다. 세균학적 Moxifloxacin 투여군이 73.5%, clarithromycin 투여군이 54.8% 으로 Moxifloxacin 투여군에서 높게 나타났으나 통계적으로 유의한 차이는 보이지 않았다(p=0.098). 내원시 시행한 객담의 세균 감수성 검사에서 moxifloxacin 투여군이 clarithromycin 투여군보다 Streptococcus pneumoniae, Pseudomonas aeruginosa, Klebsiella pneumoniae에서 높은 감수성을 보여주었다(p<0.001). 이상반응은 moxifloxacin 투여군 86명중에서 12.8% 에서 나타났고， clarithromycin 투여군 83명중에서 21.7%에서 발생하였다. 두통(4.7% vs 4.8%, 각각 moxifloxacin 투여군 vs clarithromycin 투여군)과 소화불량(2.3% vs 6.0%, 각각 moxifloxacin투여군 vs clarithromycin 투여군) 이 두 군에서 가장 흔한 이상 반응이었다. 결론 : 본 임상시혐의 결과, 만성기관지염의 급성악화 환자의 치료에 있어서 moxifloxacin 400 mg 1일 1회 7일간 요법은 clarithromycin 500 mg 1일 2회 요법과 비교할 때 임상적으로 동등한 결과를 나타냈으며 미생물학적으로 우월한 결과를 보여주었다.