• 제목/요약/키워드: Taenia solium metacestodes

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Immunoblot findings of calcareous corpuscles binding proteins in cyst fluid of Taenia solium metacestodes

  • Yang, Hyun-Jong
    • Parasites, Hosts and Diseases
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    • 제42권3호
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    • pp.141-143
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    • 2004
  • After collecting calcareous corpuscles from plerocercoid of Spirometra mansoni (sparganum), we evaluated the antigenic values of calcareous corpuscles binding proteins obtained from the cyst fluid of Taenia solium metacestodes. Immunoblot analysis revealed that cysticercosis patient sera strongly recognized 10 and 95 kDa calcareous corpuscles binding proteins. This result demonstrated that calcareous corpuscles are bound with major secretory antigenic proteins, which is possibly involved in the secretory pathways of the 10 and 95 kDa proteins presenting in the cyst fluid of T. solium metacestodes.

The 10 kDa protein of Taenia solium metacestodes shows genus specific antigenicity

  • Park, Seung-Kyu;Yun, Doo-Hee;Chung, Joon-Yong;Kong, Yoon;Cho, Seung-Yull
    • Parasites, Hosts and Diseases
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    • 제38권3호
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    • pp.191-194
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    • 2000
  • Genus specific antigenicity of the 10 kDa protein in cyst fluid (CF) of Taenia solium metacestodes was demonstrated by comparative immunoblot analysis. When CFs from taeniid metacestodes of T. saginata, T. solium, T. taeniaeformis and T. crassiceps were probed with specific monoclonal antibody (mAb) raised against 150 kDa protein of T. solium metacestodes, specific antibody reactions were observed in 7 and 10 kDa proteins of T. solium and in 7/8 kDa of T. saginata, T. taeniaeformis and T. crasiceps. The mAb did not react with any protein in hydatid fluid of Echinococcus granulosus and E. multilocularis. This result revealed that the 10 kDa peptide of T. solium metacestodes and its equivalent proteins of different Taenia metacestodes are genus specific antigens that are shared among different Taenia species.

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Immunolocalization of the 150 kDa protein in cyst fluid of Taenia solium metacestodes

  • Yang, Hyun-Jong;Chung, Young-Bae
    • Parasites, Hosts and Diseases
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    • 제42권2호
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    • pp.81-84
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    • 2004
  • The 150 kDa protein of cyst fluid (CF) of Taenia solium metacestodes was purified by ammonium sulfate fractionation and Superose 6 HR gel filtration chromatography. The purified protein consisted of three subunits (15, 10 and 7 kDa proteins), which were analyzed with the use of a 7.5-15% gradient sodium dodecyl sulfate polyacrylamide gel electrophoresis (SOS-PAGE). Immunofluorescence study was carried out by using immunize specific polyclonal antibody. Positive reactions were noticed at bladder walls, calcareous corpuscles, granules of cyst fluid and some host tissue surrounding the bladder wall of the metacestodes. These results suggest that the 150 kDa protein was secreted into host tissues, inducing immune responses in the host, and it may play important roles in the cellular physiology of the parasites.

Partial characterization of a 29kDa cysteine protease purified from Taenia solium metacestodes

  • KIM Ji-Young;YANG Hyun-Jong;KIM Kwang-Sig;CHUNG Young-Bae
    • Parasites, Hosts and Diseases
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    • 제43권4호
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    • pp.157-160
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    • 2005
  • A 29kDa cysteine protease of Taenia solium metacestodes was purified by Mono Q anion-exchanger and Superose 6 HR gel filtration chromatography. The enzyme was effectively inhibited by cysteine protease inhibitors, such as iodoacetic acid (IAA) and trans-epoxy-succinyl-L-leucyl-amido (4-guanidino) butane (E-64) while inhibitors acting on serine- or metallo-proteases did not affect the enzyme activity. The purified enzyme degraded human immunoglobulin G (IgG), collagen and bovine serum albumin (BSA), but human IgG was more susceptible for proteolysis by the enzyme. To define the precise biological roles of the enzyme, more detailed biochemical and functional studies would be required.

Human Neurocysticercosis Case and an Endemic Focus of Taenia solium in Lao PDR

  • Jeon, Hyeong-Kyu;Yong, Tai-Soon;Sohn, Woon-Mok;Chai, Jong-Yil;Min, Duk-Young;Rim, Han-Jong;Insisiengmay, Bounnaloth;Eom, Keeseon S.
    • Parasites, Hosts and Diseases
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    • 제51권5호
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    • pp.599-602
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    • 2013
  • A male patient with neurocysticercosis was identified in Montai Village, Xay District, Oudomxay Province, Lao PDR in February 2004. He had a history of diagnosis for neurocysticercosis by a CT scan in Thailand after an onset of epileptic seizure in 1993. A pig in the same district was found to contain Taenia solium metacestodes (=cysticerci); the slaughtered pig body contained more than 2,000 cysticerci. In addition to morphological identification, molecular identification was also performed on the cysticerci by DNA sequencing analysis of the mitochondrial cox1 gene; they were confirmed as T. solium metacestodes. The patient is regarded as an indigenous case of neurocysticercosis infected in an endemic focus of T. solium taeniasis/cysticercosis in Oudomxay Province, Lao PDR.

Historical Details about the Meat Consumption and Taeniases in Joseon Period of Korea

  • Shin, Dong Hoon;Chai, Jong-Yil;Hong, Jong Ha;Seo, Min
    • Parasites, Hosts and Diseases
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    • 제55권4호
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    • pp.457-460
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    • 2017
  • Previous paleoparasitological studies of Joseon specimens established that the prevalence of Taenia infection was not much different from that of the early 20th century Korean population. As many of taeniases originally diagnosed as Taenia saginata in South Korea were revealed to be actually Taenia asiatica, which share a common intermediate host with T. solium (the pig), Joseon people must have ingested raw pork frequently. However, the current examination of extant Joseon documents revealed that the population ate significant amounts of beef even if the beef ban was enforced; and pork was not consumed as much as we thought. Considering the meat consumption pattern at that time, Joseon people should have been infected by T. saginata more frequently than T. asiatica. This may suggest a low prevalence of T. saginata metacestodes in cattle compared to that of T. asiatica metacestodes in pigs, possibly due to the traditional way of rearing pigs (using human feces). This letter gives us a chance to reconsider the existing preconception about parasitic infections in Korean history though we are still hard to accurately estimate the historical patterns of taeniases at this stage.

Sequence Analysis and Molecular Characterization of Wnt4 Gene in Metacestodes of Taenia solium

  • Hou, Junling;Luo, Xuenong;Wang, Shuai;Yin, Cai;Zhang, Shaohua;Zhu, Xueliang;Dou, Yongxi;Cai, Xuepeng
    • Parasites, Hosts and Diseases
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    • 제52권2호
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    • pp.163-168
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    • 2014
  • Wnt proteins are a family of secreted glycoproteins that are evolutionarily conserved and considered to be involved in extensive developmental processes in metazoan organisms. The characterization of wnt genes may improve understanding the parasite's development. In the present study, a wnt4 gene encoding 491amino acids was amplified from cDNA of metacestodes of Taenia solium using reverse transcription PCR (RT-PCR). Bioinformatics tools were used for sequence analysis. The conserved domain of the wnt gene family was predicted. The expression profile of Wnt4 was investigated using real-time PCR. Wnt4 expression was found to be dramatically increased in scolex evaginated cysticerci when compared to invaginated cysticerci. In situ hybridization showed that wnt4 gene was distributed in the posterior end of the worm along the primary body axis in evaginated cysticerci. These findings indicated that wnt4 may take part in the process of cysticerci evagination and play a role in scolex/bladder development of cysticerci of T. solium.

신종 조충 Taenia asiatica sp.n.의 형태학적 기재 (Morphologic descritions of Taenia asiatica sp. n.)

  • 엄기선;임한종
    • Parasites, Hosts and Diseases
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    • 제31권1호
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    • pp.1-6
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    • 1993
  • 현재 인체에는 기새하는 Taenia 조충으로는 돼지고기 유구낭미층(Cysticercus cellulosae)을 먹어서 감염되는 Taenia solium Linnaeus 1785과 쇠고기의 무구낭미층(Cysticercus bovis)을 먹어서 감염되는 Taenia saginata Goeze 1782 두 종이 알려져 있다. 한편 인체에 기생하는 제 3의 Taenia 조충으로 최근 타이완, 한국, 인도내시아, 태국, 필리핀 등 아시아국가를 중심으로 발견되는 Asian Taenia saginata 조충은 돼지나 소의 간 또는 내장에 있는 내장형낭미충을 먹어서 감염되는 것으로 추정된다. 그러나 이러한 생활사상의 구분에도 불구하고 형태하적으로는 본충이 Taenia saginate Groeze 1782와 유사하기 때문에 아직 신종으로 인정되지 않은 상태이다. 이에 연구자들은 Asian Taenia saginata 조충의 형태학적 구분점을 새로이 발견하고 학명으로서 Taenia asiatica sp.n.(한국명:아시아조총)을 제시하고자 한다. 감별적으로는 1.선충의 두절에 있는 액취의 존재, 2. 성충의 수태편절에서 관찰되는 자궁세지의 수, 3.성충의 수태관절에서 관찰되는 미돌기의 존재 및 4.유추의 낭벽표면에서 관찰되는 사마귀양 구조가 광학 및 전자현경적으로 관찰되었다. 이중 '자궁세지'와 '미돌기'는 새로이 관찰하여 기재하는 구조물로서 처음으로 Taeniid의 종감별에 사용하였다.

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유조낭고충 낭액에서 친화성 크로마토그래피로 분리한 항원 단백질의 생화학적 성상 (Biochemical properties of a purified protein in cystic quid of Taenia solium metacestodes)

  • 조승열;김석일;강신영;공윤
    • Parasites, Hosts and Diseases
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    • 제26권2호
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    • pp.87-94
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    • 1988
  • Kim et at.(1986)은 유구낭미충 낭액을 감작시켜 만든 단세포군 항체를 CNBr활성화 Sepharose 4B에 연결시켜 친화성 크로마토그래피를 실시하고 낭액에서 A-항원을 분리한 바 있다. 이 연구는 그 항원 단백질의 생화학적 성상을 관찰한 것이다. Disc-PAGE에 의해 4.5~10% 폴리아크릴아마이드 젤에서 나타내는 Rf간을 기초로 분자량을 측정한 결과 A 항원의 분자량은 150,000 dalton이었다. A-항원은 SDS-PAGE에서 15,000, 10,000, 7,000 dalton에 해당하는 polypeptide로 분획이 구별되었다. 10% 2-mcrcaptoethanol로 처리하지 않거나 $95^{\circ}C$에서 5분간 처리하지 않은 A-항원의 SDS-PAGE에서는 7,000 dalton의 polypeptide가 분리되지 않았다. A-항원의 등전점(PI)은 pH6.8이었다. 낭액항원의 각 분획에 반응하는 항체를 갖는 환자혈청으로 A-항원을 SDS-PAGE/EITB한 바 환자혈청은 15,000, 10,000, 7,000 dalton에 해당하는 부위에서만 반응하였다. 낭액 단백질의 약70%를 차지하는 A-항원은 면역학적으로 내열성을 가졌으며 포충(hydatid cyst) 낭액 항원중 Oriol et at.(1971)의 "Antigen B"와 생화학적 성상이 비슷한 단백질이었다.

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인체 유구낭미충증 환자에서 수거한 낭미충 낭액의 성분 단백질의 양상 (Component proteins in cystic fluid of Taenia sodium metacestodes collected surgically from neurocysticercosis patients)

  • Yoon Kong;Shin-Yong Kang;Seung-Yull Cho
    • Parasites, Hosts and Diseases
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    • 제28권2호
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    • pp.101-108
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    • 1990
  • 포도낭미충증을 포함한 유구낭미충증 환자의 신경외과적 수술 과정에서 수거한 낭미충 낭액의 성분 단백질을 비교 검토하였다. 7.5% gel에서 Disc-PAGE와 reducing condition의 10~15% gel에 SDS-PAGE를 실시하여 다음과 같은 결과를 얻었다. 1. 7.5% gel에서 실시한 Disc-PAGE 소견상 제주도와 Ecuador에서 수집한 돼지의 유구낭미충 낭액은 U, A, B, C, E, S의 6개 band로 구성되어 있었고 그 중 band C가 주 구성 성분이었다. 그리고 인체에서 수집한 낭액 은 band C가 주 구성 성분이었고 경우에 따라 band E가 주 구성 성분으로 관찰되고 있었다. 정상 뇌척수액은 band C, E 위치에서 ${\gamma}-globulin$과 albumin이 보이고 있었다. 2. 10~15% gel에서 실시한 SDS-PAGE상 제주도 낭액은 최소 25개 이상의 subunit로 구성되어 있었고 그 중 95, 64, 48, 39, 34, 24, 15, 10및 7 kDa band가 주 구성 성분이었다. 그리고 Ecuador감염 돼지의 유구낭미충 낭액은 전체적으로 비슷했으나 48, 39, 34, 24 kDa band가 의미한 반면 21, 17 kDa가 진하게 염색되었다. 인체 뇌낭미충증 환자에서 수집한 낭액들은 15~21개 정도의 band가 보이고 있었다. 그 중 94, 64, 15, 10 그리고 7 kDa band는 모든 낭액에 공통적으로 포함되어 있었다. 한편, 정상 뇌척수액의 SDS-PAGE에서는 77, 66 (albumin), 55 (heavy chain of ${\gamma}-globulin$), 22.5 (light chain of ${\gamma}-globulin$) 그리고 17 kDa band가 보였다. 환자의 낭액은 77, 66, 55, 22.5 kDa에서 진하게 염색되는 경우가 있었다. 이상의 결과로 인채 유구낭미충증에서 수집한 낭액에도 15, 10, 7kDa의 subunit로 구성된 150kDa의 band C protein이 주 성분으로 구성되어 있으며 수술장에서 수집하는 과정에서 뇌척수액이 섞이는 경우가 많음을 알 수 있었다.

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