• Parasites, Hosts and Diseases
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• 제22권2호
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• pp.248-252
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• 1984

아니사키스붙 유충(Anisakis-llke larva)에 의한 인체감염은 일본과 네델란드 등지에서 많은 증례가 알려져 있다. 이들 인체기생례의 대부분은 유충에 의한 감염이며 일부만이 A형 유충에 의한 것이다. 우리나라에는 지금까지 8예의 아니사키스춘이 보고되어 있으나 인두에서 완전한 충체를 꺼내어 멸라담담힐 type I 유충으로 기록한 헛 예를 제외하고는 종을 동정한 경우는 없다. 저자들은 1984연 7월 급성충수돌기염의 진단하에 수술을 시행한 23세 남자의 복륙에서 움직이는 백색 충체를 적출하고 배erranowa type A유충으로 동정하였다. 환자는 우하응부에 심한 통증이 있었고 좌하복부에도 압통이 있어 금성충수돌기염의 증상을 보였고 대동맥판막 협착중의 소견을 나타내었다. 환자는 어린때부터 생선회를 즐겨 먹었고 발병 2일전에도 먹은 기억이 있다고 하였다. 충수돌기절제술 시행도중 유맹부근처의 적장벽을 기어다니는 충체를 발견하게 되어 이 충체가 급성복증(acute abdomen)의 원인이었음을 확인하였다. 충체는길이 25.76mm,폭0.66mm이었고 맹탕이 위양식도(ventriculus)쪽으로 을라와 있었으며 충체후단에 mucron이 뚜렷하여 Terranova type A 유충으로 동정되었다. 따라서 이 증례는 우리나라에서 배erraneva 유충인 체감염에 대한 최초 보고례이다.

• 융합보안논문지
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• 제15권4호
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• pp.121-126
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• 2015

최근 기업의 해킹사고에 따라 보유하고 있는 개인정보의 노출은 심각한 수위에 이르게 되었다. 그리고 기업 업종에 따라 발생되는 보안위협요소도 달라지고 있다. 따라서 본 논문에서는 기업 업종에 따른 보안위협요소를 살펴보고 이에 적합한 정보보안컨설팅 방법을 제시하였다. 첫째, 금융 보험업은 내부 구성원의 인식 부족으로 인한 웜/바이러스 감염에 무방비 상태가 되지 말아야하며 조직의 내부 보안기준을 구성원에 동일하게 일괄 적용함으로써 고객정보 위험성이 높은 직군에 의해 보안사고가 발생하는 것을 사전에 대비해야한다. 그러므로 사람과 정보 중심의 정보보안컨설팅 방법이 적용되어야한다. 둘째, 개인기업의 경우 산업군의 속성에 따라 정보보안컨설팅이 이루어져야한다. 즉, 기업이나 기관에서 정보보안을 고려하게 되는 동기를 크게 Security Thread, Compliance, Biz-Requirement, Biz-Opportunities 로 나누어 각각의 동기에 따라 컨설팅이 이루어져야한다

• 대한수의학회지
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• 제30권4호
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• pp.487-497
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• 1990

This study was carried out to observe in vitro effect of praziquantel on the tegumental changes of Heterophyopsis continua with scanning electron microscope. Metacercariae were collected from the perch, Lateolabrax japonicus, by artificial digestion technique and fed to 2-week old chickens. Adult worms were recovered from small intestine of chickens 8 days after infection. For working solutions, praziquantel was diluted with TC199 medium at concentration of 0.01, 0.1. 1 and $10{\mu}g/ml$. To each petri dish containing 10ml of solution, 5~10 worms were introduced and incubated at $37^{\circ}C$. For the scanning electron microscopy(SEM), the worms were fixed in cold 2.5% glutaraldehyde, dehydrated in a series of graded ethanol and freeze-dried. Dried specimen was mounted on stub and coated with gold and observed in an SEM. The results were as follows: 1. Severe tegumental alterations were recognized by scanning electron microscope. Bleb formation of tegument was observed in 5 minute group and most pronounced on anterior tegument of worms. The number and size of blebs increased as incubation time prolonged. 2. The surface destruction was more pronounced at ventral margin between the oral and the ventral suckers. 3. The sensory papillae were slightly affected, but destruction of tegumental spine was not recognized. 4. The effect of praziquantel on the worm was found dependent on the concentration and incubation time, however, the effect was more dependent upon the incubation time.

• 한국잠사곤충학회지
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• 제19권1호
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• pp.19-23
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• 1977

차아염소산 나트륨용액의 실험실내에서의 간이시험을 통하여 양잠소독 약제로써의 적용가능성을 얻고 경화병원균에 대한 생물학적 약효검정에 대한 시험결과 아래와 같은 성적을 얻었다. 1. 차아염소산 나트륨용액 1,3,5%를 누에에 처리하여 약제가 누에표피에 접착됨으로써 받은 피해를 조사하였으나 아무런 해가 없는 것으로 나타났다. 2. 차아염소산 나트륨용액 1,3,5%를 누에에 침식하여 약제가 누에의 생리에 미치는 영향을 조사하였으나 약해가 없는 것으로 나타났다. 3. 차아염소산 나트륨용액의 황강병원균에 대한 약효는 생물학적 검정을 통하여 조사한 결과 동약제의 3%의 경우는 춘추잠기에 각각 7.3, 11.4% 발병율을 보였고 5%의 경우는 춘추잠기에 각각 6.7, 10.0%의 발병율을 보임으로써 무처리구의 평균 97%의 발병율을 보인데 비하여 좋은 효과를 보였다.

• Parasites, Hosts and Diseases
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• 제44권1호
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• pp.1-5
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• 2006

One coastal village in Haenam-gun and two in Yeongam-gun, Jeollanam-do were surveyed for intestinal parasite infections by fecal examination. The egg positive rates of Gymnophalloides seoi were high, $24.1\%$ (14/58) in Haenam-gun and $9.3\%$ (11/118) in Yeongam-gun. The egg positive rates of heterophyids, including Heterophyes nocens, and of Clonorchis sinensis were $10.3\%\;and\;6.9\%$ in Haenam-gun, and $14.4\%\;and\;8.5\%$ in Yeongam-gun, respectively. After praziquantel treatment and purgation, a total of 37,761 fluke specimens were recovered from 17 patients; 11 in Haenam-gun and 6 in Yeongam-gun. Gymnophalloides seoi was the most commonly recovered species, with 37,489 specimens in total (2,205 per person). Other recovered flukes included Heterophyes nocens, Stictodora fuscata, Heterophyopsis continua, Pygidiopsis sUmma, and undetermined species. These results indicate that the areas surveyed are new endemic foci of G. seoi.

• Parasites, Hosts and Diseases
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• 제33권1호
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• pp.55-60
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• 1995

서울주걱흡충감염 마우스의 혈청내 IgA와 소장의 IgA의 반응을 알아보려고 하였다 서울주걱흡충 의 피낭유충 200마리씩을 Balb/c 마우스에 경구 감염시킨 뒤 3. 7 14, 28일에 희생시켜, 혈청에 서의 서울주걱홉충 특이 IgA를 면역효소법으로 측정하였다. 또한 소장에서의 IgA를 면역조직화학법으로 반응을 관찰하였다. 감염 7일째부터 혈청내 특이 IgA의 역가가 증가하기 시작하여 28일째도 지속되었다. 소장 상피세포에서의 IgA 반응은 감염 14일에 가장 강하였다. 이 결과로 보아 서울주걱흡충 감염 Balb/c 마우스에서 감염후 혈청내 특이 IgA가 증가하고 소장에서 국소반응이 나타나나 충체 배출에는 큰 영향을 미치지 못하는 것으로 생각한다.

• 한국동물위생학회지
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• 제31권2호
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• pp.219-227
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• 2008

Swine ascariasis is one of the major parasitic diseases to cause economic losses. This study was carried out to investigate the prevalence of Ascaris suum from slaughtered pigs and return the result to the farm (Feed - back). A total of 8,121 pigs (315 farms) were examined from January to November in 2007. The prevalence of farms detected with milk-spots was 42.9% (135 / 315 farms), and that of pigs with milk-spots was 7% (565 / 8,121 heads). Among 565 pigs with milk-spots, the pigs with grade 1 and grade 2 were 380 and 185, respectively. The percentage of pigs and farms detected with adult worm were 0.6% (45/8,121) and 7.3% (23/315) respectively. There was no statistical difference in affection rateamong seasons. The rate was 5.0% in spring, 8.8% in summer, 8.2% in autumn and 6.3% in winter. There was no enough difference in pig infection rate based on piggery type. The prevalence of milk-spots in stolic type and in sawdust one were 15% and 18.5%, respectively.

• Parasites, Hosts and Diseases
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• 제54권5호
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• pp.637-643
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• 2016

The immune correlate of host resistance induced by reinfection of Trichinella spiralis remains unclear. In this study, we investigated immune correlates between the resistance and serum IgG antibody level, $CD23^+$ $IgM^+$ B cells, and eosinophil responses induced by T. spiralis reinfection. Mice were primarily infected with 10 or 100 T. spiralis larvae (10 TS, 100 TS), respectively, and after 4 weeks, they were challenge infected with 100 T. spiralis larvae (10-100 TS, 100-100 TS). Upon challenge infections, 10-100 TS mice induced significantly higher levels of T. spiralis-specific total IgG antibody responses in sera and antibody secreting cell responses in spleens compared to 100-100 TS mice, resulting in significantly reduced worm burdens in 10-100 TS mice (60% and 70% reductions for adult and larvae, respectively). Higher levels of eosinophils were found in mice primarily infected with 10 TS compared to those of 100 TS at week 8 upon challenge. $CD23^+$ $IgM^+$ B cells were found to be increased significantly in mice primarily infected with 10 TS. These results indicate that primary infection of 10 larvae of T. spiralis, rather than 100 larvae, induces significant resistance against reinfection which closely correlated with T. spiralis-specific IgG, eosinophil, and $CD23^+$ $IgM^+$ B cell responses.

• Journal of Korean Medical Science
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• 제33권44호
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• pp.273.1-273.15
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• 2018

Background: Sparganosis is a larval cestodiasis caused by the plerocercoid of Spirometra spp. Since the first description of human sparganosis in 1924, several hundred cases have been reported in Korea. However, systematic approaches for literature surveys of Korean sparganosis have seldom appeared. Methods: We searched publicly available databases such as PubMed, Research Information Sharing Service, and Korea Medical Citation Index with relevant Medical Subject Headings. Results: At least 438 Korean sparganosis cases have been described from 1924 to 2015. Preoperative diagnosis has been significantly increased since the 1980s due to popularization of serological and imaging diagnostics. Cases were largely detected from fifth decades in general, but cerebral sparganosis was detected in relatively young age groups (third and fourth decades). Sparganosis was prevalent in men (75.9%). Consumption of frog/snake and drinking unfiltered water were found in 63.4% and 16.9% of patients, respectively. Most frequently affected sites were subcutaneous tissues (49.9%), followed by the central nervous system (36.2%). Involvements of visceral organs (7.6%), ocular regions (3.6%), and muscles (2.7%) were noticed. In women, breast sparganosis constituted a large proportion (34.2%). Sparganosis associated with immunocompromised patients has recently been reported. Conclusion: Sparganosis has been continuously reported in Korea during the past 90 years, although its incidence has decreased during the last 20 years. The disease is mostly characterized by subcutaneous nodule, but infection of the worm in vital organs often results in serious illness. Continuous awareness is warranted to monitor sparganosis occurrence and associated clinical consequences.

• 한국미생물·생명공학회지
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• 제49권3호
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• pp.305-315
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• 2021

The cotton leafworm, Spodoptera littoralis, is a major pest in Egypt and many countries worldwide, and causes heavy economic losses. As a result, management measures to control the spread of the worm are required. S. littoralis nucleopolyhedrovirus (SpliNPV) is one of the most promising bioagents for the efficient control of insect pests. In this study, a chitinase gene (chitA) of a 1.8 kb DNA fragment was cloned and fully characterized from SpliNPV-EG1, an Egyptian isolate. A sequence of 601 amino acids was deduced when the gene was completely sequenced with a predicted molecular mass of 67 kDa for the preprotein. Transcriptional analyses using reverse transcription polymerase chain reaction (RT-PCR) revealed that chitA transcripts were detected first at 12 h post infection (hpi) and remained detectable until 168 hpi, suggesting their transcriptional regulation from a putative late promoter motif. In addition, quantitative analysis using quantitative RT-PCR showed a steady increase of 7.86-fold at 12 hpi in chitA transcription levels, which increased up to 71.4-fold at 120 hpi. An approximately 50 kDa protein fragment with chitinolytic activity was purified from ChitA-induced bacterial culture and detected by western blotting with an anti-recombinant SpliNPV chitinase antibody. Moreover, purification of the expressed ChitA recombinant protein showed in vitro growth inhibition of two different fungi species, Fusarium solani and F. oxysporum, confirming that the enzyme assembly and activity was correct. The results supported the potential role and application of the SpliNPV-ChitA protein as a synergistic agent in agricultural fungal and pest control programs.