• Title/Summary/Keyword: Clonorchis Sinensis

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Current Status of Clonorchis Sinensis Infection & Its Related Factors among the Residents of Rural Communities (농촌지역주민의 간흡충 감염실태 및 관련 요인에 관한 연구)

  • Park, Do-Soon
    • Journal of Korean Academy of Rural Health Nursing
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    • v.2 no.1
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    • pp.33-42
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    • 2007
  • Purpose: This study was done to determine the extent of Clonorchis sinensis infections as well as other parasitic infections and to determine the growth rate. Method: Analyzed test results were from 1,050 bowel samples taken at 3 public health subcenters located in Muju, North Jeolla Province during February and March 2007. Result: The results are summarized as follows; The egg positive rate by stool examination was 4.3%. Ascaris lumbricoides, Enterobius vermicularis, Clonorchis sinensis, Trichuris trichiura, Metagonimus, Paragonimus were detected. No one was infected with multiple parasites. Infection rate for Clonorchis sinensis was 3.5%. Statistical correlation to Clonorchis sinensis infection rate was as follows; Gender (p=0.001), Age (p=0.005), Proximity to a river (p<0.000), Drinking (p<0.000), Smoking (p=0.009), Cooking of freshwater fish (p<0.000), Confidence in subjective health status (p=0.032), Family history of infection (p=0.005), No significant correlation was found between Clonorchis sinensis infection rate and duration of stay (p=0.809) in the agricultural communities or between Clonorchis sinensis infection and knowledge of Clonorchis sinensis (p=0.113). Conclusion: The results of this survey show that there is a need to develop a program to test the condition of Clonorchis Sinensis infection and its growth rate in residents of rural communities.

Clonorchis Sinensis Research Reported in Korea from 2001 to 2007 (간흡충 관련 국내 연구논문 분석)

  • Park, Do-Soon;Bang, So-Youn
    • Journal of Korean Academy of Rural Health Nursing
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    • v.3 no.1
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    • pp.5-14
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    • 2008
  • Purpose: The purpose of this study was to analyze the trend of research on clonorchis sinensis in Korea. Method: The study design was a literature analysis in which research studies with 'Clonorchis' in the title were collected from 2001 to 2007. A total of 115 research studies were analyzed based on the year of publication, study design, major or institute of researcher, study sample, and research theme. Results: 10-19% of the research studies were published each year from 2001 to 2007. Experimental study design was the most frequent at 54.8%. Medicine or parasitology as the major of researchers were 43.2% and 41.2% retrospectively, but no nursing studies were found. For study samples, 65.9% were cyst larvae and animals, followed by human beings (29.5%). In research theme, the structure and gene analysis of clonorchis sinensis was the most frequent (32.1%), followed by animal experimental studies (15.7%), epidemic studies of clonorchis sinensis prevalence and changes (13.0%), and methods of diagnosis of clonorchis sinensis and effectiveness (12.2%). Conclusion: Although positive rate of clonorchis sinensis is still high, intervention studies for managing clonorchis sinensis were not found. So, methodological research developing clonorchis sinensis management program and intervention study is needed for high risk groups in rural communities.

Epidemiological Survey on Clonorchis sinensis Infection in Yedang Reservoir, Choong-cheong Namdo (예당(禮唐) 저수지변(貯水池邊)에 있어서의 간흡충(肝吸虫) 감염실태조사(感染實態調査))

  • Ryu, Jong-Cheol;Joo, Kyoung-Hwan;Lee, Joon-Sang;Rim, Han-Jong
    • Journal of agricultural medicine and community health
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    • v.6 no.1
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    • pp.61-67
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    • 1981
  • This survey was undertaken to evaluate the status of clonorchiasis in Chang-gok Myun, Hong-Seong Gun adjacent to Yedang reservoir from Sept., 1980 to Oct., 1981. A total of 550 subjects (male 318, and female 232) were examined by cellophane-thick smear technique and formalin-ether method. In order to identify the intensity of the Clonorchis sinensis infection, Stoll's egg dilution counting method was also applied to the C. sinensis positive cases. The following results were obtained in this survey; 1. In the examination of 550 subjects, Clonorchis sinensis eggs were found in 167 cases (30.4%). Male subjects showed 43.4% positive rates and female represented 12.5%. 2. The highest prevalence rate of Clonorchis sinensis was found in 40~49 year group in male (64.2%) and 30~39 year group in female (22.0%), although 14.3%~16.7% positive rates were found in young aged group. 3. Mean E.P.G. of Clonorchis sinensis infected cases were 6,148, showing 7,533 in male and 5,193 in female. 4. The degree of intensity of Clonorchis sinensis infection by E.P.G. count was distributed as 30.4% in light infection (1~999), 45.7% in moderate infection (1,000~29,999) and 5.8% in very heavy infection (over 30,000) in male. Female showed 48.3% in light, 37.9% in moderate, 10.3%. in heavy and 3.5% in very heavy infection. 5. Other helminthic infection rate was 15.6% in Ascaris lumbricoides infection, 15.1% in Trichuris trichiura infection and 4.4% of male subjects showed eggs of Taenia species.

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Epidemiological Survey on Clonorchis sinensis in Yeoju Gun Gyeong-gi Do (경기도(京畿道) 여주군(驪州郡)에 있어서의 간흡충감염실태조사(肝吸虫感染實態調査))

  • Joo, Kyoung-Hwan;Choi, Deuk-Lin;Rin, Han-Jong
    • Journal of agricultural medicine and community health
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    • v.7 no.1
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    • pp.43-49
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    • 1982
  • Clonorchiasis sinensis is one of the most important endemic diseases in Korea, and this disease has been known to be one of public health concern in many areas of Korea. This survey was undertaken to evaluate the status of clonorchiasis in Yeoju Gun, Gyeong-gi Do from July to September 1980. A total of 1,194 male students were examined by intradermal test with Clonorchis antigen. In order to detect Clonorchis egg, the stool examinations were undertaken to 1,158 students, and the intensity of the Clonorchis infection was estimated by the Stoll's egg count. The prevalence rate was reanalyzed by the regional groups for an investigation of regional characteristics of infection. The following results were obtained in this survey. 1) Among 1,194 students in Yeoju Eup, positive rate of intradermal test with C. sinensis antigen was 17.2 percent. (middle school14.6% and high school 20.1%). 2) In the examination of 1,158 stool specimens, Clonorchis eggs were found in 97 (8.4%) cases. 3) Mean E.P.G. of Clonorchis infected case was $1,330{\pm}2,620$. 4) The degree of the intensity of Clonorchis infection by E.P.G. count was distributed as 73.6% in light infection (100-999), 22.6%, in moderate infection (1,000-9,999), and 3.8% in heavy infection (10,000-29,999). 5) High prevalence rate of Clonorchis sinensis was found in the Sang-Ri(9,3%) and Ha-Ri(8.4%) in Yeoju Eup. Neighbouring Bugnae Myun (11.5%), Gangcheon Myun(12.1%) and Neungseo Myun (11.1%) adjacent to the river had a similary high prevalence of C. sinensis.

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Synthesis of Praziquantel Derivatives and Their In Vitro Activity Against Adult Clonorchis sinensis

  • Kim, Choong-Sup;Min, Duk-Young
    • Archives of Pharmacal Research
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    • v.21 no.6
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    • pp.744-748
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    • 1998
  • Several praziquantel derivatives have been prepared by the acylation of compound 5, and examined on their biological activity in vitro agninst adult clonorchis sinensis collected from rabbits infected with metacercariae which was isolated from Pseudorasbora parva, a second intermediate host, captured in Nakdong river in Korea.

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Ultrastructural localization of 28 kDa glutathione S-transferase in adult Clonorchis sinensis

  • Hong, Sung-Jong;Yu, Jae-Ran;Kang, Shin-Yong
    • Parasites, Hosts and Diseases
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    • v.40 no.4
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    • pp.173-176
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    • 2002
  • Glutathione S-transferase (28GST) with molecular mass of 28 kDa is an anti-oxidant enzyme abundant in Clonorchis sinensis. In adult C. sinensis, 28GST was localized in tegumental syncytium, cytons, parenchyma, and sperm tails examined by immunoelectron microscopy. C. sinensis 28GST was earlier found to neutralize bio-reactive compounds and to be rich in eggs. Accordingly. it is suggested that 28GST plays important roles in phase II defense system and physiological roles in worm fecundity of C. sinensis.

A Study on the Prevalence of Clonorchis Sinensis and the Effects of Educational Program among Residents in the Basin of the Youngsan River, Korea (영산강 유역 주민의 간흡충 감염실태와 감염 예방교육 프로그램의 효과)

  • Kim, Chun-Mi;So, Ae-Young;June, Kyung-Ja;Jung, Hee-Young
    • Research in Community and Public Health Nursing
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    • v.22 no.1
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    • pp.56-65
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    • 2011
  • Purpose: The goal of this study was to analyze the prevalence of Clonorchis sinensis infection in people living within 5 km of the Youngsan River basin, to develop an educational program to prevent the infection, and to examine the effects of the educational program. Methods: This study employed a one group pretest-posttest design, the subjects were 384. This study was conducted from November 20, 2008 to June 16, 2009. The results were analyzed with the SPSS/WIN 18.0 program. Results: Of the residents, 5.7% were infected with Clonorchis sinensis and the knowledge level about the prevention of Clonorchis sinensis was improved significantly from $9.57{\pm}5.12$ points before the education to $15.05{\pm}2.43$ points after the education. One of the important effects was that the willingness to eat raw fresh-water fish was reduced after the education. Conclusion: Based on the results of this study, a continuous research needs to be conducted on how education and knowledge level-up change people's living attitudes for the prevention of Clonorchis sinensis infection and the reduction of the infection rate in the future.

Intestinal parasite and Clonorchis sinensis infection among the inhabitants in the upper stream of Taechong Dam, Kumgang (River) (금강(대청댐 상류) 유역 주민의 장내 기생충 및 간흡충 감염 실태)

  • 김종환;나영언
    • Parasites, Hosts and Diseases
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    • v.32 no.4
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    • pp.207-214
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    • 1994
  • The prevalence of intestinal parasites and CLonorchis sinensis infection was observed among inhabitants in the upper stream of Kumgang (River) from Junuary to October 1991. A total of 743 fecal specimens was examined by cellophane thick smear and formalin-ether concentration technique. The parasite positive rate including helminth eggs and protozoan cysts was 40.8%, the positive rates for every species were: Clonorchis sinensis 30.8%, Metqgonimur app. 14.5%, Fosciolc spry. 0.7%, Tqsnia app. 1.5%, Asccris lumbricoides 0.4%, Enterobius vermicularis 0.1%, Hookworm 0.1%, Trichuris kichiura 1.6%, Entamoeba coli 0.7%, E. histolytica 0.3%, Endolimox nana 0.3%, Giardia lamblia 0.3% and lodamoebc buetschlii 0.1%, respectively. The cumulative positive rate in Okchon-gun showed 51.1%, in the Kumsan-gun 50.8% and in the Muju-gun 28.6%. Through this survey, it was concluded that the soil transmitted intestinal parasites including helminthseggs and protozoan cysts have been decreased remarkably among the inhabitants along the upper stream of Taechong Dam, Kum-gang (River), on the other side, Clonorchis sinensis, Metogonimw app. and Tuenin sap. are still inorderate prevalent. Key words: Intestinal parasites, Clonorchis sinensis, Metogonimus app. Fasciolc sup. Kumgang (River).

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Prevalence and Related Factors of Clonorchis Sinensis for High Risk Population in the Han Riverside Area (한강 유역 간흡충 고위험군의 감염과 관련요인)

  • Kim, Hee-Gerl;Kang, Hee-Kyoung;So, Ae-Young;Kim, Young-Si;Park, Jeong-In;Han, Eun-Hyae;Tak, Kyung-Sook;Lee, Sun-Hee;Kim, Jin-Soon;Han, Myung-Ja;Cha, Sun-Sook;Sung, Myung-Soon;Choi, Sun-Ja
    • Journal of Korean Academy of Rural Health Nursing
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    • v.4 no.1
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    • pp.13-21
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    • 2009
  • Purpose: This study was done to investigate the prevalence and related factors of Clonorchis Sinensis for inhabitants of the Han riverside area and to identify knowledge related to Clonorchis Sinensis and intended behavioral changes to decrease risk of infection. Method: The data were collected from December 16, 2008 to January 10, 2009. Participants were 555 people who responded to a questionnaire. Frequency, percentage, $X^2$-test, and t-test were used to analyze the data. Results: The prevalence of Clonorchis Sinensis was 7.9% in this population. Related factors for Clonorchis Sinensis were gender (male=10.8%, female=3.6%, p=0.002) and smoking (p=0.007). but habits related to ingestion of alcohol and raw fish were not significant. As for knowledge of Clonorchis Sinensis, the Clonorchiasis group had a mean score of 10.09 $({\pm}3.95)$ of a possible 17 compared to a score of only 8.27$({\pm}4.60)$ for the negative group (p=0.011). The intended behavioral change related to risk of infection, according to presence of infection or not, was significant (p=0.004). Conclusion: These results suggest that Clonorchiasis is still highly endemic in all risk areas such as the Han riverside, indicating that it is necessary to set up effective management programs for patient care and prevention of Clonorchis Sinensis.