• 제목/요약/키워드: Mycoplasma

검색결과 292건 처리시간 0.04초

Prevalence of Trichomonas vaginalis by PCR in Men Attending a Primary Care Urology Clinic in South Korea

  • Seo, Jun-Hyeok;Yang, Hye-Won;Joo, So-Young;Song, Su-Min;Lee, Yu-Ran;Ryu, Jae-Sook;Yoo, Eun Sang;Lee, Won Kee;Kong, Hyun-Hee;Lee, Sang-Eun;Lee, Won-Ja;Goo, Youn-Kyoung;Chung, Dong-Il;Hong, Yeonchul
    • Parasites, Hosts and Diseases
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    • 제52권5호
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    • pp.551-555
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    • 2014
  • Trichomonas vaginalis, a causative agent of trichomoniasis, may trigger symptomatic or asymptomatic non-gonococcal urethritis and chronic prostatitis in men. Despite the availability of highly sensitive diagnostic tests, such as nucleic acid amplification tests, including PCR, few prospective studies present data on male T. vaginalis infection in South Korea. In the present study, the prevalence of T. vaginalis and associated clinical conditions were evaluated in 201 male patients from a primary care urology clinic in South Korea. The prevalence of T. vaginalis infection in our cohort was 4% (8/201) by PCR. T. vaginalis infection was common in men older than 40 years (median age, 52 years). Among the 8 Trichomonas-positive patients, 87.5% (7/8) had prostatic diseases, such as prostatitis and benign prostatic hyperplasia, and 25.0% (2/8) and 12.5% (1/8) were coinfected with Chlamydia trachomatis and Mycoplasma genitalium, respectively. Our results suggest that T. vaginalis infection is not rare in men attending primary care urology clinics in South Korea, especially in those older than 40 years, in whom it may explain the presence of prostatic disease. The possibility of T. vaginalis infection should be routinely considered in older male patients with prostatic diseases in South Korea.

8-Azaguanine 내성 인형 형질세포종 세포주의 확립 (Establishment of 8-Azaguanine Resistant Human Plasmacytoma Cell Line)

  • 차창룡;황응수;국윤호;임동균;조한익;박명희;김노경;장우현;이문호
    • 대한미생물학회지
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    • 제21권3호
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    • pp.399-406
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    • 1986
  • This study was performed to establish human plasmacytoma cell line as the partner cells for producing human hybridoma. Bone marrow cells from a multiple myeloma patient from Seoul National University Hospital, Korea were cultured and established as the cell line, named as HMC-BM4. HMC-BM4 cells were cultivated in RPMI 1640 media containing 8-azaguanine(8-AG; gradually increasing concentration from $1\;{\mu}g/ml$ to $20\;{\mu}g/ml$). 8-AG resistant cells were collected and cloned by limiting dilution. Each clone was divided and tested to die in hypoxanthine, aminopterine and thymidine (HAT) selection media. Finally one clone was selected and named as HMC-AR, which was sensitive to HAT selection media. HMC-AR cells showed typical morphology of plamacytoma in Wright staining. No cell formed the rosette with sheep erythrocytes. Surface membrane $\mu$ heavy chain was detected in 20% of HMC-AR cells and cytoplasmic $\mu$ heavy chain in 90% of them by direct immunofluorescent staining. Ia-like antigen was found in 90% of HMC-AR cells by indirect immunofluorescent staining using anti-Ia-like antigen monoclonal antibody, 1BD9-2. And about $1.0\;{\mu}g/ml$ of human $\mu$ heavy chain was detected in the 3-day culture supernatant of HMC-AR cells. 88% of cells contained 46 chromosomes. Mycoplasma was not detected in HMC-AR cells by Hoechst 33258 staining. This cell line would be used for making hybridomas secreting human monoclonal antibody.

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국내 산란계의 주요 전염성 질병에 대한 혈청학적 모니터링 (Serological Monitoring of Major Infectious Diseases in the Domestic Layers)

  • 민봉철;;김강산;김태식;손주성;모인필
    • 한국가금학회지
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    • 제46권4호
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    • pp.235-247
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    • 2019
  • 본 연구에서는 국내 산란계의 주요 질병에 대한 면역상태 및 역가수준을 파악하기 위해 2015년부터 2017년까지 3년간 충북대 수의과대학 조류질병학 실험실에 의뢰된 산란계의 혈청을 성장기와 산란기를 고려하여 주령별로 구분하여 분석하였고, 계절에 따른 검사결과를 분석하였다. 검사대상 질병은 검사 의뢰건 수가 많고, 혈청검사 결과가 유의미한 질병인 LPAI, ND, IB, aMPV, EDS'76, IBD, CIA, MS로 한정하였다. AI와 ND의 경우 전체적인 GMT, CV의 양상은 비슷하게 진행되었다. 반면 LPAI의 경우 주령별 계군양성율이 불균일하고 편차가 최대 약 50%의 큰 차이를 보였지만 ND의 경우 균일한 양성률을 보이며 편차는 2% 미만으로 낮게 확인되었다. 또한, 전체적인 GMT 역시 LPAI가 ND에 비하여 낮게 형성됨을 확인하였다. 이는 각 질병의 특성과 백신접종의 차이에 따른 결과로 판단된다. IB는 음성계군과 전체계군을 비교할 때 전체 계군의 역가수준이 전반적으로 높았고, CV값은 낮은 경향을 확인할 수 있었으며, 이를 통해 야외 IB virus의 노출을 추정할 수 있었다. aMPV는 2011년에 백신 출시 이후 과거에 비해 높은 항체양성률과 GMT역가 상승을 확인할 수 있었다. EDS'76은 전주령 구간 균일한 역가분포를 나타내었고, 백신에 의한 역가형성을 확인할 수 있었다. IBD는 0~1.5주령의 어린 일령에서 전반적인 IBD 모체이행항체가 높은 수준의 양성률을 보였고 3주령 이후 높게 형성되는 양성률이 모체이행항체수준을 높이는 것으로 추정되고, 향후 지속적인 혈청학적 모니터링이 진행되어야 하겠다. MS는 2017년 백신 출시 이후 양성률과 역가가 높게 나타나는 결과를 보였지만 의뢰건 수가 적고 백신 도입 초기이기 때문에 지속적인 모니터링이 필요하다.

Cloning and sequence analysis of Wild Argali short palate, lung and nasal epithelium clone 1 cDNA

  • Shen, Wen;Chen, Kaili;Sun, Yanming;Guo, Haiying;Chen, Dongmei;Cao, Yang
    • Asian-Australasian Journal of Animal Sciences
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    • 제30권5호
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    • pp.736-742
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    • 2017
  • Objective: Experiments were conducted to clone the sequence of Wild Argali short palate, lung and nasal epithelium clone 1 (SPLUNC1) cDNA, and to lay the foundation for further study the biological function of Wild Argali SPLUNC1. Methods: The complete sequence of Wild Argali SPLUNC1 cDNA was generated by rapid amplification of cDNA ends. The entire coding sequence was inserted into the pPIC9K vector and expressed in Pichia pastoris (P. pastoris) GS115. The recombinant SPLUNC1 protein was detected by Western blot and purified by $Ni^{2+}$ chelate affinity chromatography. The test of effect of the protein on Mycoplasma ovipneumoniae (MO) was performed with real-time polymerase chain reaction. Results: The Wild Argali SPLUNC1 cDNA was 1,076 bp with an open reading frame of 768 bp, which encoded a 26.49 kDa protein composed of 255 amino acids. Its amino acid sequence shared 98.4%, 96.9%, 94.5%, 90.2%, 80.8%, 78.4%, 78.3%, 72.5%, 72.3%, 68.8% identity with those of SPLUNC1 cDNA from Ovis aries (accession no. NP_001288334.1), Capra hircus (accession no. XP_005688516.1), Pantholops hodgsonii (accession no. XP_005979709.1), Bos taurus (accession no. NP_776851.1), Felis catus (accession no. XP_006929910.1), Homo sapiens (accession no. NP_001230122.1), Sus scrofa (accession no. NP_001005727.1), Chinchilla lanigera (accession no. NP_001269294.1), Mus musculus (accession no. NP_035256.2), and Rattus norvegicus (accession no. NP_742028.1), respectively. The recombinant protein corresponded to the expected molecular mass of 25.47 kDa as judged by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and it was detected in the supernatant of P. pastoris, and it could be purified. The results from the test of inhibition effect of argali recombinant SPLUNC1 protein on MO showed that the product could inhibit MO very well (p<0.01). Conclusion: The amino acid sequence of Wild Argali SPLUNC1 was different from other organisms. The recombinant SPLUNC1 protein has good biological activity.

Application of tylosin antibiotics to olive flounder (Paralichthys olivaceus) infected with Streptococcus parauberis

  • Joo, Min-Soo;Hwang, Seong Don;Choi, Kwang-Min;Kim, Yoon-Jae;Hwang, Jee Youn;Kwon, Mun-Gyeong;Jeong, Ji-Min;Seo, Jung Soo;Lee, Ji Hoon;Lee, Hee-Chung;Park, Chan-Il
    • Fisheries and Aquatic Sciences
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    • 제23권8호
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    • pp.20.1-20.18
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    • 2020
  • Background: Olive flounder, Paralichthys olivaceus, is an economically important aquaculture species in Korea. Olive flounders have been heavily damaged by streptococcal infections every year and are treated with antibiotics. However, antibiotic abuse is causing the emergence of resistant strains, and to overcome this, research has shown that new antibiotics must be applied. Tylosin is a relatively safe antibiotic and has good activity against Gram-positive bacteria and mycoplasma. We studied the therapeutic effects and side effects of tylosin on Streptococcus parauberis-infected olive flounder. Methods: After artificial infection of olive flounder with S. parauberis SPOF18J3, an appropriate dose of tylosin was confirmed by intramuscular injection (I.M.) at 2.5, 5, 10, and 15 mg/kg, and oral administration at 10 and 20 mg/kg. After I.M. and oral administration dosing of tylosin, side effects were confirmed by serological analysis, histopathological analysis, and median lethal dose (LD50) analysis at both an appropriate concentration and a high concentration. Statistical analysis was performed using one-way analysis of variance (ANOVA) and Tukey's test (p < 0.05). Results: The appropriate I.M. and oral administration concentration of tylosin administered to olive flounder infected with S. parauberis SPOF18J3 was found to be 10 mg/kg. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels were showed not significantly different between the control group and the experimental groups. The histopathologic results showed mild inflammatory responses in muscle and tubular vacuolization and tubular atrophy appeared, but there were no significant differences between the groups. The LD50 was confirmed to be 461 mg/kg. Conclusion: In this study, an effective treatment method was provided by verifying the treatment effects and side effects of tylosin in olive flounder infected with S. parauberis, which can be applied directly to aquaculture sites. In addition, these results may be used as a reference for evaluation required upon request to obtain approval for tylosin antibiotics as fishery antibiotics in Korea. After approval, it is possible that a fishery disease manager will be able to prescribe and sell the antibiotic tylosin.

인천지역 도축돈에서 돼지호흡기질병복합감염증의 육안적 폐병변과 원인체에 관한 연구 (Study on gross finding of lung lesions and causative pathogens of porcine respiratory disease complex from slaughtered pigs in Incheon)

  • 이창희;황원무;이정구;이성모;김성재;김남희;양돈식;한정희
    • 한국동물위생학회지
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    • 제34권4호
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    • pp.313-320
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    • 2011
  • The purpose of this study was to investigate association with gross lesions and causative pathogens of porcine respiratory disease complex (PRDC) including porcine circovirus type 2 (PCV2), porcine reproductive and respiratory syndrome virus (PRRSV), swine influenza virus (SIV), Mycoplasma hyopneumoniae (MH), Pasteurella multocida (PM), Actinobacillus pleuropneumoniae (APP), Haemophilus parasuis (HP) in slaughtered pigs. A total of 1,200 lung samples were collected randomly from slaughtered pigs in Korea during August of 2010 through July of 2011. The gross lesions were classified according to the six stages (0, 1~10, 11~20, 21~30, 31~40 and ${\geq}41$, unit=%) and 48 samples from each stage were selected to detect viral and bacterial pathogens. The results according to the six stages were 100 (8.3%), 259 (21.6%), 326 (27.2%), 213 (17.8%), 144 (12.0%) and 158 (13.2%) cases, respectively. Prevalence of pneumonia according to season was 87.0~96.7% and the highest prevalence was in spring. In detection of pathogens by PCR, 53 samples were not detected any causative pathogens of PRDC. PCV2, PRRSV, SIV, MH, PM, APP serotype 2, APP serotype 5 and HP were positive in 45.5%, 12.5%, 10.4%, 60.1%, 1.7%, 13.9%, 12.2% and 15.6%, respectively. In co-infection, PCV2-MH was the most detected causative pathogens of PRDC. The detection rate of PCV2 and PRRSV was the highest in spring, of SIV, MH and HP was in winter. The detection rate of APP-2 and APP-5 had no seasonal prevalence. The more severe gross lesions increased, the higher the detection rate showed.

Elucidation of Bacterial Pneumonia-Causing Pathogens in Patients with Respiratory Viral Infection

  • Jung, Hwa Sik;Kang, Byung Ju;Ra, Seung Won;Seo, Kwang Won;Jegal, Yangjin;Jun, Jae-Bum;Jung, Jiwon;Jeong, Joseph;Jeon, Hee-Jeong;Ahn, Jae-Sung;Lee, Taehoon;Ahn, Jong Joon
    • Tuberculosis and Respiratory Diseases
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    • 제80권4호
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    • pp.358-367
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    • 2017
  • Background: Bacterial pneumonia occurring after respiratory viral infection is common. However, the predominant bacterial species causing pneumonia secondary to respiratory viral infections other than influenza remain unknown. The purpose of this study was to know whether the pathogens causing post-viral bacterial pneumonia vary according to the type of respiratory virus. Methods: Study subjects were 5,298 patients, who underwent multiplex real-time polymerase chain reaction for simultaneous detection of respiratory viruses, among who visited the emergency department or outpatient clinic with respiratory symptoms at Ulsan University Hospital between April 2013 and March 2016. The patients' medical records were retrospectively reviewed. Results: A total of 251 clinically significant bacteria were identified in 233 patients with post-viral bacterial pneumonia. Mycoplasma pneumoniae was the most frequent bacterium in patients aged <16 years, regardless of the preceding virus type (p=0.630). In patients aged ${\geq}16years$, the isolated bacteria varied according to the preceding virus type. The major results were as follows (p<0.001): pneumonia in patients with influenza virus (type A/B), rhinovirus, and human metapneumovirus infections was caused by similar bacteria, and the findings indicated that Staphylococcus aureus pneumonia was very common in these patients. In contrast, coronavirus, parainfluenza virus, and respiratory syncytial virus infections were associated with pneumonia caused by gram-negative bacteria. Conclusion: The pathogens causing post-viral bacterial pneumonia vary according to the type of preceding respiratory virus. This information could help in selecting empirical antibiotics in patients with post-viral pneumonia.

Swyer James syndrome환아의 전신마취 하 치아우식 치료: 증례보고 (DENTAL TREATMENT OF A PATIENT WITH SWYER JAMES UNDER GENERAL ANESTHESIA: A CASE REPORT)

  • 성영제;송지수;현홍근;김영재;김정욱;장기택;이상훈;신터전
    • 대한장애인치과학회지
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    • 제15권1호
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    • pp.60-64
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    • 2019
  • Swyer James 증후군은 영아기 및 소아기의 호흡기 감염으로 인한 폐쇄성 기관지염의 형태로, 단순 흉부 촬영에서 한쪽 폐의 과투과성을 특징으로 한다. 특별한 증상이 없어 우연히 발견되기도 하나, 반복적인 호흡기 감염 등을 유발할 수 있다. 아산화질소가 폐포 파열을 유발할 수 있고, 기흉을 악화시킬 수 있기 때문에 협조도가 필요한 환자의 경우 전신마취가 권장된다. 전신 마취시에 폐 환기의 저하로 인한 저산소증이 보고된 바 있기 때문에, 면밀한 호흡과 관련한 환자감시가 필요하다.

Serum-Free Medium에서 배양한 한우 배의 내동성과 이식 (Transfer, Cryopreservation and Production of Bovine Embryos Cultured in Serum-Free System)

  • 임여정;김진희;송해범;정연길
    • 한국수정란이식학회지
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    • 제19권2호
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    • pp.133-145
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    • 2004
  • 난자의 체외성숙 및 체외배양에는 일반적으로 동물의 혈청을 사용하고 있다. 그러나, 채취한 소의 상태에 따라서 혈청의 질에 차이가 있어 실험데이터가 일정하지 않을 수 있고, 그것으로부터 바이러스, 세균, 마이코플라즈마 등에 오염될 가능성이 있다. 따라서, 본 실험에서는 완전 무 혈청 배양액에서 난자의 성숙, 배 발생율, 세포 수, 동결성을 검토하였다. 다음으로, 근래 혈청배지로 생산한 체외 배양 수정란은 과체중의 산자 생산, 초기 산자 사망률, caesarean section, dystocia 같은 발병으로 문제가 지적되고 있다. 그러나 무 혈청 배지로 생산한 체외 배양 수정란은 이러한 현상을 개선할 수 있다는 보고가 있어 본 실험에서는 완전 무혈청 배양액에서 생산된 동결란과 신선란을 젖소에 이식하여 그 결과를 검토하였다. 무혈청 배양액에는 에너지원과 세포성장인자가 첨가된 IVD101과 IVMD101, 대조군인 혈청 배양액에는 TCM199 + 10% FBS가 사용되었다. IVMD101에 의해 체외성숙이 이루어 졌고, 혈청이 첨가된 TCM199 + 10% FBS에서는 12.4% 배 발생율을 보인데 반해, 무혈청 배양액 IVD101과 IVMD101이 각 32.4%, 34.5%로 훨씬 높은 배 발생율을 보였다. 더욱이, 세포 수에 있어서도 무혈청 배양액에서 발생된 배반포의 세포수가 혈청이 첨가된 배양액에서 발생된 배반포의 세포수보다 월등하였으며, 이는 체내란과 비슷한 세포 수를 보이고 있다. 수정란의 내동성을 보면, 융해하고 24시간 배양기 정치 후에 IVD101과 IVMD101은 94.5%, 95.8%의 생존율을 보인 반면 TCM199 + 10% FBS는 52.5%에 불과하다. 융해하고 72시간후 탈출 배반포율이 IVD101과 IVMD101는 78.4%, 83.7%였는데 반해 TCM199 + 10% FBS는 32.0%였다. 마지막으로, 무혈청 배양액에서 발생한 동결란과 신선란을 젖소에 이식한 후에 임신율에 있어서는 유의적 차이는 없었지만, 무혈청 배지에서 생산된 수정란의 내동성의 탁월함이 증명되었다. 이러한 결과들로 종합해 보면, 무혈청 배양액 (IVD101, IVMD101)에서 발생된 수정란이 혈청 배양액에서 발생된 수정란보다 배발생율, 세포수, 동결성, 임신율에 있어서 우수함을 알 수 있었다. 이러한 무혈청 배양액은 배발생 과정의 연구뿐만 아니라 수정란 이식을 위한 고품질의 체외 수정란의 대량 생산, 복제, 형질전환 동물 생산 등에도 유익할 것으로 사료된다.

중증 지역사회획득 폐렴의 임상상 및 예후 예측인자에 관한 연구 (Clinical Characteristics and Prognostic Factors of Severe Community-Acquired Pneumonia)

  • 오흥국;서지영;김동규;최정은;모은경;박명재;이명구;현인규;정기석
    • Tuberculosis and Respiratory Diseases
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    • 제44권5호
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    • pp.1072-1082
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    • 1997
  • 연구배경 : 중증 지역사회획득 폐렴은 진단방법의 향상, 항생제의 개발, 조기진단 및 치료에도 불구하고 여전히 높은 사망률을 보이는 질환으로 알려져 있다. 중증 지역사회획득 폐렴의 임상적 특정을 분석하고 예후에 영향을 미치는 인자를 규명하여 치료 및 예후 판정에 도움을 주고자 한다. 방 법 : 1989년 1월부터 1996년 7월까지 한림대학교 의료원에 내원한 40명의 중증 지역사회획득 폐렴환자를 대상으로 후향적으로 분석하였다. 원인균 동정을 위해 객담배양, 혈액배양, 기관지폐포세척액배양 및 Mycoplasma pneumoniae에 대한 항체검사를 시행하였고, 초치료로 2세대 혹은 3세대 cephalosporin, amoxicillin/clavulanic acid 등이 사용되었으며 aminoglycoside와 macrolide가 상황에 따라 병용 투여되었다. 대상군을 생존군과 사망군으로 분류하여 연령, 흡연 및 알콜중독 유무, 기저질환 유무, 저산소 혈중, 기계적 환기의 필요, 흉부 방사선상 양측성 폐 침윤 소견, 분당 호흡수, 쇼크의 유무, 혈중요소질소 및 알부민 농도 등을 비교 분석하였다. 결 과 : 남자가 2.07 : 1의 비율로 많았고 평균 연령은 $63.1{\pm}17.5$세(범위 : 25~90세)였으며 60세 이상이 65%로 다수를 차지하였다. 흡연자가 62.5%, 알콜중독자가 30%였고, 60%에서 기저질환이 발견되었으며 종류별로는 과거의 폐결핵 병변(12.5%), 만성 폐쇄성 폐질환(7.5%), 기관지 천식(5%), 기관지 확장증(2.5%), 당뇨병(22.5%) 등이었다. 가장 흔한 원인균은 S. Pneumoniae로 17.5%였으며 S. aureus 15%, K. pneumoniae 13.5%, Mycobacterium tuberculosis 7.5%였고 그 외에 coagulase negative staphylococcus, H. influenzae, P. aeruginosa, E. cloaceae, E. coli가 각각 2.5%씩 동정되어 65%의 동정율을 나타내었다. 단독 및 병용요법에서 흔히 사용된 항생제는 aminoglycoside계(75% : 30/40), 2세대 및 3세대 cephalosporin계(40% : 16/40, 27.5% : 11/40), macrolide계(27.5% : 11/4), amoxicillin/clavulanic acid(22.5% : 9/40)의 순이었다. 사망률은 37.5%였으며 사망환자의 50%가 입원후 72시간 내에 사망하였다. 예후에 영향을 미치는 인자로는 기계적 환기의 필요, 흉부 방사선 소견상 양측성 폐침윤, 혈중 알부민 농도의 저하(3.0g/dl 이하) 등이 통계적으로 유의한 차이를 보였다. 결 론 : 본 연구에서 나타난 중중 지역사회획득 폐렴의 임상적 특징과 예후인자를 바탕으로 적절한 항생제의 선택과 초기에 적극적인 진료로 치료성적을 향상시킬 것으로 기대된다.

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