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Preliminary Report of the $1998{\sim}1999$ Patterns of Care Study of Radiation Therapy for Esophageal Cancer in Korea (식도암 방사선 치료에 대한 Patterns of Care Study ($1998{\sim}1999$)의 예비적 결과 분석)

  • Hur, Won-Joo;Choi, Young-Min;Lee, Hyung-Sik;Kim, Jeung-Kee;Kim, Il-Han;Lee, Ho-Jun;Lee, Kyu-Chan;Kim, Jung-Soo;Chun, Mi-Son;Kim, Jin-Hee;Ahn, Yong-Chan;Kim, Sang-Gi;Kim, Bo-Kyung
    • Radiation Oncology Journal
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    • v.25 no.2
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    • pp.79-92
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    • 2007
  • [ $\underline{Purpose}$ ]: For the first time, a nationwide survey in the Republic of Korea was conducted to determine the basic parameters for the treatment of esophageal cancer and to offer a solid cooperative system for the Korean Pattern of Care Study database. $\underline{Materials\;and\;Methods}$: During $1998{\sim}1999$, biopsy-confirmed 246 esophageal cancer patients that received radiotherapy were enrolled from 23 different institutions in South Korea. Random sampling was based on power allocation method. Patient parameters and specific information regarding tumor characteristics and treatment methods were collected and registered through the web based PCS system. The data was analyzed by the use of the Chi-squared test. $\underline{Results}$: The median age of the collected patients was 62 years. The male to female ratio was about 91 to 9 with an absolute male predominance. The performance status ranged from ECOG 0 to 1 in 82.5% of the patients. Diagnostic procedures included an esophagogram (228 patients, 92.7%), endoscopy (226 patients, 91.9%), and a chest CT scan (238 patients, 96.7%). Squamous cell carcinoma was diagnosed in 96.3% of the patients; mid-thoracic esophageal cancer was most prevalent (110 patients, 44.7%) and 135 patients presented with clinical stage III disease. Fifty seven patients received radiotherapy alone and 37 patients received surgery with adjuvant postoperative radiotherapy. Half of the patients (123 patients) received chemotherapy together with RT and 70 patients (56.9%) received it as concurrent chemoradiotherapy. The most frequently used chemotherapeutic agent was a combination of cisplatin and 5-FU. Most patients received radiotherapy either with 6 MV (116 patients, 47.2%) or with 10 MV photons (87 patients, 35.4%). Radiotherapy was delivered through a conventional AP-PA field for 206 patients (83.7%) without using a CT plan and the median delivered dose was 3,600 cGy. The median total dose of postoperative radiotherapy was 5,040 cGy while for the non-operative patients the median total dose was 5,970 cGy. Thirty-four patients received intraluminal brachytherapy with high dose rate Iridium-192. Brachytherapy was delivered with a median dose of 300 cGy in each fraction and was typically delivered $3{\sim}4\;times$. The most frequently encountered complication during the radiotherapy treatment was esophagitis in 155 patients (63.0%). $\underline{Conclusion}$: For the evaluation and treatment of esophageal cancer patients at radiation facilities in Korea, this study will provide guidelines and benchmark data for the solid cooperative systems of the Korean PCS. Although some differences were noted between institutions, there was no major difference in the treatment modalities and RT techniques.

Diagnostic Values of pH of Vaginal Discharge, Amine Test, and Microscopic Examination of Infectious Vaginitis (감염성 질염에 대한 질내 산도측정, Amine 검사 및 현미경 검사의 진단적 가치)

  • Choi, Jae-Dong;Kim, Gi-Duk;Koh, Min-Whan;Lee, Tae-Hyung;Chung, Wun-Yong
    • Journal of Yeungnam Medical Science
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    • v.5 no.2
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    • pp.129-139
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    • 1988
  • Vaginitis is one of the most common disease in gynecologic field in recent days. About 90% of these patients suffer from the infection of the vagina caused by Gardnerella vaginalis, Candida, or Trichomonas, either alone or in combination. For the effective diagnosis and management, it is essential to get an accurate identification of the causative agent. Applying simple and easy diagnostic methods such as pH of vaginal discharge, amine test and microscopic examination of wet mount preparation of normal saline and 10% KOH to 549 cases of randomly selected patients visiting Out-patient Department of Obstetrics and Gynecology of Yeung-nam University Hospital through May 1st to Sept. 31st, 1987, the following results were obtained. 1. In the Gardnerella vaginitis vaginal pH was more than 5.0 in 81.0% of total cases, positive amine test in 62.8%, decreased lactobacilli in 77.4% & decreased WBC counts in 70.1%, In the Trichomonas vaginitis vaginal pH more than 5.0 was noted in 93.3% of the cases, negative amine test in 90%, decreased lactobacilli in 90% & increased WBC counts in 93.3%, whereas Candida vaginitis and normal groups showed vaginal pH of 3.0~4.0 in 83.2%, negative amine test in 100%, normal distribution of lactobacilli in 89.7%, normal WBC counts in 72.4%. 2. The accuracy rates of physical diagnosis by wet mount preparation of normal saline and 10% KOH revealed 26.3%, 47.5% % 70,0% in Gardnerella vaginitis, Candida vaginitis, and Trichomonas vaginitis, respectively. The vaginal pH and amine test showed 83.2% of accuracy rate in Candida vaginitis group, 60.6% in Gardnerella vaginitis group and 83.3% III Trichomonas vaginitis group. 3. In 23 cases of Gardnerella vaginitis showing vaginal pH of 3.0 or 4.0 and positive amine test, the clue cells were observed in 10% or less in 12 cases, 30% in 5 cases, 50% in 4 cases and 50% or more in 2 cases. In summary vaginal pH and amine test could be useful in screening and differentiating the different types of infectious vaginitis. Furthermore by adding microscopic examination of normal saline and 10% KOH wet mount preparation to them, they not only could obtain higher diagnostic accuracy rate but would be more valuable in selecting the patients requiring cultures to confirm the diagnoses.

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재미 한국 유배우 부인의 재생산주기 (초경-재경)에 관한 연구

  • 박선화;김응익;최명희;서경만
    • Korea journal of population studies
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    • v.14 no.1
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    • pp.55-69
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    • 1991
  • The objective of the study is to figure out the status of reproductive health and general characteristics related to maternal health for Korean-Americans living in Los Angeles. We collected data from the married women who wanted no more additional child birth and were attending the Family Planning Clinic of Koryo Health Foundation in Los Angeles during 1988. There were 494 women met the eligibility requirement for this study. The results are summarized below. 1. In the age distribution of the women who desired no more additional child birth, women 30-34 age group constituted the largest proportion at 36.6 percent ; the mean age of women was 35.1915.55. The mean number of child birth was 1.77, and the proportion of the women by number of child birth were 35.2 percent for one children, 50.1 percent for two children 10.5 percent for three children, and 2.6 percent for four children. All of the women experienced pregnancy at least once, and mean number of pregnancy was 3.42. The mean number of total experience of induced abortion was 1.56. and 76.7 percent of these women had experience with induced abortions. To prevent further pregnancies, 90.1 percent of the women were utilizing the contraceptive methods, and the highest proportion by the contraceptive methods was condoms(53.7%), 9.3 percent in spermicides, 8.7 percent in IUDs, 8.7 percent in rhythm method, and 6.9 percent in oral pills. 2. The mean age of women at each stage of reproductive life cycle were 14.74 years at time of menarche, 24.55 years at time of marriage, 26.60 years at time of the first child birth, and 28.75 years at time of the last child birth. In age distribution of the women by birth cohort (Group I : birth cohort 1940-1954, Group H : birth cohort 1955-1970), the mean menar-cheal age of the women was 14.96 years in group I , and 14.53 years in group H . Mean age at time of marriage was 25.01 years in group I and 24.08 years in group H . Mean child birth age of the women by birth cohort was 27.19 years In group I and 26.01 years in Group II for the first child birth and 30.07 years in group I and 27.45 years in group II for the last child birth. The total length of reproductive life cycle from menarche to menopause (presumed to be at 49 of age years) was 34.26 years. The len-gth of phase I (from menarche to marriage) was 9.81 years, while phase H (marriage to first birth) was 2.05 years, and phase Ill (first birth to last birth) was 2. 15 years, and the last phase of reproductive life cycle, phase IV (last birth to menopause) was 20.25 years. The proportion of each phase 10 total length of reproductive life cycle was 28.6 percent, 6.0 percent 6.3 percent, and 59.t percent respectively. In the tendency of each phase in reproductive life cycle by birth cohort (group I , U ), the length of phase I, II , III of birth cohort group II was diminished in comparison with those of birth cohort group I , but the length of phase IV was extended by 2.38 years. 3. Among the women, the mean number of total pregnancy by birth cohort group was 2.01 in group I and 1.10 in Group II, and mean number of child birth was 1.97 in group I and 1.58 in group II. In terms of pregnancy was-tage rate by birth cohort group, among the total pregnancy of birth cohort group I , 51.8 percent of the cases resulted in induced abortions or spontaneous abortions whils 48.2 percent resulted in live births, and 42.2 percent or total pregnancy in group II resulted in pregnancy wastage and 57.8 percent of the cases resulted in live births.

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Results of Radiation Alone Versus Neoadjuvant Chemotherapy and Radiation in Locally Advanced Stage of Uterine Cervical Cancer (진행된 자궁경부암에서 방사선치료 단독과 항암 화학요법 및 방사선치료 병용요법의 결과)

  • Kim, Jin-Hee;Choi, Tae-Jin;Kim, Ok-Bae
    • Radiation Oncology Journal
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    • v.15 no.3
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    • pp.255-262
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    • 1997
  • Purpose : This is retrospective study to compare the results of radiation therapy alone and neoadjuvant chemotherapy and radiation in advanced stage of uterine cervical cancer. Materials and Methods : Seventy-six Patients who were treated with definitive radiation therapy for locally advanced cervical cacinoma between June 1988 and December 1993 at the department of radiation oncology, Keimyung University Dong-san Hospital. Thirty six patients were treated with radiation therapy alone and forty patients were treated with cisplatin based neoadjuvant chemotherapy and radiation therapy. According to FIGO staging system. there were 48 patients in stage IIb, 3 patients in stage IIIa, 23 patients in stage lIIb and two patients in stage IVa with median age of 53 years old. Follow-up periods ranged from 7 to 95 months with median 58 months. Results : Complete response (CR) rate were $86.1\%$ in radiation alone group and $80\%$ in chemoradiation group. There was no statistical difference in CR rate between the two groups. Overall five-year survival rate was $67.3\%$. According to stage, overall five-rear survival rates were $74\%$ in stage IIb, $66.7\%$ in stage IIIa, $49.8\%$ in stage IIb, $50\%$ in stage IVa. According to treatment modality overall five year survival rates were $74.1\%$ in radiation alone and $61.4\%$ in chemoradiation group (P=0.4) Five rear local failure free survival rates were $71.5\%$ in radiation alone group and $60\%$ in chemoradiation group (P=0.17). Five year distant metastasis free survival rates were $80.7\%$ in radiation aione group and $89.9\%$ in chemoradiation group (P=0.42). Bone marrow suppression (more than noted in 3 cases of radiaion alone group and 1 case of chemoradiation group. Grade II retal complication was noted in 5 patients of radiation group and 4 patients In chemoradiation group. Bowel obstruction treated with conservative treatment (1 patient) and bowel perforation treated with surgery (1 patient) were noted in radiation alone group. There was no statistical difference in complication between two groups. Conclusion : There was no statistical difference in survival, failure and complication between neoadjuvant chemotherapy and radiation versus radiation alone in locally advanced uterine cervical carcinoma.

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A Study of SCC Antigen and EGFr in Tissues of Squamous Cell Carcinoma of Lung (폐의 편평세포 암종 조직내 SCC항원 및 EGFr치에 대한 연구)

  • 이창민;조성래
    • Journal of Chest Surgery
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    • v.31 no.4
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    • pp.362-368
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    • 1998
  • The aim of this study was to evaluate a usefulness of serum SCC antigen in diagnosis or evaluation of therapeutic effect of lung cancer by investigation of the differences of SCC antigen concentration in lung mass according to TNM staging, and mass size of lung cancer. And the other aim was to know whether SCC antigen plays a role in infiltrative growth of lung cancer or not, comparing with concentration of epidermal growth factor receptor(EGFr) in tissue which is related with growth and differentiation of tumor cell. The results of this study were as follows. The concentration of SCC antigen in squamous cell carcinoma of lung(69${\pm}$25ng/ml) was higher than in unaffected lung tissue(34${\pm}$7ng /ml).(p<0.05). The concentration of SCC antigen was higher in squamous cell carcinoma (69${\pm}$25ng/ml) than in adenocarcinoma (35${\pm}$25ng/ml) (p<0.05), but the concentration of EGFr showed no any significant difference in both histological types. In small sized mass(<3cm in diameter) the concentration of SCC antigen in central portion of tumor was higher than that of peripheral portion, whereas in large sized mass($\geq$5cm in diameter), the concentration of SCC antigen in peripheral portion of tumor was higher than that of central portion.(p<0.05). The concentration of EGFr according to tumor size was not significantly different in central and peripheral portion of tumor. The concentration of SCC antigen according to TNM staging of lung cancer was that from central portion was higher in stage I, II, but that from peripheral portion was higher in stage III, IV (p<0.05). The concentration of EGFr from central portion was higher in higher TNM stage(not significant) but that from peripheral portion shows no significant changes. In conclusion, the concentration of SCC antigen in tissue was higher in squamous cell carcinoma than in unaffected lung tissue or adenocarcinoma, and the concentration of SCC antigen increased according to tumor size or TNM staging like in serum level. so, serum SCC antigen is a useful tumor marker to diagnose or evaluate therapeutic effect of squamous cell carcinoma of lung. But further studies are necessary to confirm the relation of infiltrative growth in lung cancer and concentration of SCC antigen because there was a different pattern of regional tissue concentration of SCC antigen and EGFr

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An Evaluation on the Operating of Fisheries Extension Services (어촌지도사업의 평가)

  • 최정윤
    • The Journal of Fisheries Business Administration
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    • v.17 no.2
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    • pp.65-106
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    • 1986
  • 1, The Purpose of Study This is a study on the Evaluation of the operating of Fisheries Extension Services of Korea, for performing the activities such as guiding fisheries technique as well as offering industrial information to the fishermen in fishing village. By doing so, the Fisheries Extension Sevices(FES) can materialize the continued growth of fisheries, the social and economic development of fishing village, and the increase in income by enhancing the knowledge level of Fishermen, etc. In performing fisheries policy, this activity plays a great role on the research and development activity, and it has become practical since 1976 in Korea. In order to meet immediately with the problem of fisheries technical innovation and rapid environmental changes surrounding the fisheries, the fishermen should not only enhance their scientific and comprehensive capacity in fisheries technique but abtain various effective information. Generally, as most of all the fishemen are poor in the managerial structure and scattered in fishing villages, they have little opportunity in the contact of information. As a result, it is nessessary for the FES to perform the fishing business by the extension service officials who has received special training and acquired fisheries know-how in these fields. And yet, FES is under the unfullfilled circumstance in such factors as manpower, technical know-how, equipment, and the service system etc., which is required in promoting the social, economic development of fishing village and in resolving the high technique demand of fisherman. This study on the fisheries extension services have been studied from those backgrounds. 2. Research Method The data of collecting methods which were necessary in carrying out this study was adopted by the questionaire research on the present extension service activity, through the subject of the extension services (driving agency of the work and the officials), the object(fishemen) and the 3rd observers to the extension services (the authorities concerned). The research sample was taken by the sampling extraction of total 1, 774 men from the above 3 groups. And the research was carried out from August, 1986 to October, 1986, supported from the Fisheries Extension Office (FEO) located in field during the research process. In this study, the levels of the extension operating were determined and estimated in accordance with the extension service method, morale of extension service officials and the extension service system, etc. through the collected data of the research questionaire paper. And based on this result, the essential conditions of the extension services were grasped, and also we tried to present the various activity plan necessary to promote the operating of the extension services. The questionaire research data was calculated by the computer center of National Fisheries University of Pusan, and the total result was again tried on the one demension analysis along with two dimension analysis to search out the relativity between the questionaire, and the statistical test was done $\chi$$^2$test in significance level of l~5%. 3. Contents of Study This study consists of 7 chapters and the contents are as follows : Chapter I : The object and method of the study Chapter II : The assessment and analysis of the extension services Chapter III : The contents and method of the extension services Chapter IV : Analysis of the essential conditions for the extension services Chapter V : The evaluation of activities of extension services Chapter Ⅵ : Conclusion.4. Results and RecommendationTherefore, the results of this study estimated by logical process and analysis are as follows : 1) Most of Korean fishing villages and coastal fishermen have shown much concerns about fisheries technique and social changes, thus many of them were confronted with new problems on how to adapt and to meet changes. 2) Majority of fishermen estimated FEO as an organization of specific technologies with all the thing concerning the fisheries technique in general. Therefore the fishermen wanted to utilize the FEO as an adaptable method for the modern fisheries techniques as well as the environmental changes. 3) In contrast with the fast changes of the fisheries technique, the complexity and variety of technical system and the broadness of fishing village and fishermen, it was revealed that the necessary factors such as the facilities, manpower, budget, and the level of applying techniques of the FEO located in field were highly insufficient. Accordingly, the guiding efficiency was low and the extension services did not provide full solution to the various request from fishermen. 4) It is possible to classify the activation factor for the extension service into two large dimension ; personal dimension relevant to guidance officials and work dimension relevant to the organization. And it was found that the activation level of the work dimension was far lower than the personal dimension between them. So, the activation should be done first in the dimesion to promote the activation of the extension services. 5) The extension services officials are now demoralized in general, thus it is necessary to take reality into consideration : the expense of activity, the adequate endowment of activity scope and the reasonable operation of the position class, etc to enhance its morale. However, in order to do the FES activation, first of all, the systems should be established which is lain unsettled stage until now. And there must be change in the understanding of government i.e. the fisheries extension services are the essential policy subject to build up the base of fisheries growth and modernize the fisheries management. And it should be driven positively with the recognition of the "lasting project".g project".uot;.

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Drug Resistance Patterns of the Bacterial Strains Isolated from Rural Areas and an Urban General Hospital (무의촌균주(無醫村菌株) 및 병원균주(病院菌株)의 항균제(抗菌劑) 내성(耐性) 양상(樣相)에 관(關)한 연구(硏究))

  • Rhee, Kwang-Ho;Kim, Ik-Sang;Shin, Hee-Sup;Cha, Chang-Yong;Lee, Seung-Hoon;Chang, Woo-Hyun;Lim, Jung-Kyoo
    • The Journal of the Korean Society for Microbiology
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    • v.15 no.1
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    • pp.19-32
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    • 1980
  • Besides the benefits of antimicrobial agents in the control of various infectious diseases, widespread and prolonged use of particular antimicrobial agents has brought about the increase of drug-resistant strains in a community and the profound changes in the pattern of infectious diseases. In Korea, there are some remote villages where no clinics and drug stores are available and the residents in those areas are assumed to have fewer chances to contact with antimicrobial agents. In the present study, the differences in susceptibilities to 14 antimicrobial agents between the isolates from rural areas(R) and Seoul National University Hospital(SNUH, H) were studied. The isolates and their numbers were Staphylococcus aureus, R;55, H;68), Enterococci(R;28, H;30), Escherichia coli(R;40, H;40), Enterobacter aerogenes(R;25, H;21) and Klebsiella pneunoniae(R;58, H;67). Minimal inhibitory concentrations(MIC's) of penicillin, ampicillin, carbenicillin, cephalexin, tetracycline, oxytetracyline, doxycycline, minocycline, gentamicin, kanamycin, streptomycin, erythromycin, troleandomycin and co-trimoxazole were determined by agar dilution method. I. Comparison of MIC's and resistant strain proportions between isolates from SNUH and rural areas. MIC's and/or resistant strain proportions of the isolates from SNUH were significantly higher than those of the isolates from rural areas in the cases of 1. S. aureus to doxycycline, streptomycin and kanamycin. 2. E. coli to penicillin, ampicillin, carbenicillin, tetracycline, oxytetracycline, doxycycline, minocycline, streptomycin, kanamycin, erythromycin and co-trimoxazole. 3. E. aerogences to carbenicillin, tetracycline, oxytetracycline, doxycycline, minocycline, streptomycin, kanamycin, genaamicin and co-trimoxazole. 4. K pneunoniae to penicillin, ampicillin, tetracycline, oxytetracycline, doxycycline, monocycline, streptomycin, kanamycine, gentamicin and co-trimoxazole. However, the mean MIC and resistant strain proportion of S. aureus to tetracycline were higher in isolates from rural areas than in those from SNUH and Enterococci showed no differences in susceptibilities to the antimicrobial agents between isolates from rural areas and from SNUH. Therefore, in general, differenes in susceptibility to these antimicrobial agents between the isolates from rural areas and SNUH were remarkably greater and broader in gram negative enteric bacteria. II. Multiple drug resistance pattern. Patterns and incidences of multiple drug resistance were studied with penicillin, ampicillin, tetracycline, cephalexin, gentamicin, streptomcin, kanamycin and co-trimoxazole in Enterococci, E. coli, E. aeroges and K. pneumoniae. There appeared significant differences in the incidence of multiply drug-resistant strains and multiple drug resistance patterns between the isolates from SNUH and rural areas in Enterococci, E. coli, E. aerogenes and K. pneumoniae. However, there was no difference in the incidence of multiply drug-resistant strains between isolates of S. aureus from SNUH and rural areas but the pattern of multiple resistance of the SNUH strains of S. aureus was diverse, while that of the rural strains was predominantly confined to penicillin-tetracycline combination. The incidence of multigly drug-resistant strains and diversity of their patterns were the highest in E. coli strains isolated from SNUH and there were no multiply drug resistant strrains in Enterococci and K. pneumoniae strains isolated from rural areas. The number of drug-resistance determinants was also different between the isolates from rural areas and SNUH. Most of the multiply drug-resistant strains of E. coli, E. aerogenes and K. pneumoniae isolated from SNUH were resistant to more than 3 kinds of antimicrobial agents, most frequently to ampicillin, tetracycline and streptomycin, while multiply drug-resistant strains from rural areas were resistant to 2 kinds of antimicrobial agents among ampicillin, tetracycline and streptomycin. With drug-resistant E. coli strains, resistance to tetracycline which was used most widely since 1951 was most frequently involved as a part of mutliple drug-resistance, followed by resistance to ampicillin and streptomycin. This strongly suggests that emergence of drug-restant strains in a community is directly dependent on the selective pressure exerted by the antimicrobial agent used. III. Cross resistance. Cross resistance of bacteria was studied among tetracycline penicillin, aminoglycoside and macrolide derivatives by analyzing correlation coefficients of sucseptibilities using the least square method. In this study, there were high correlations among the susceptibilities to related derivatives. It appears that the relatively low correlations in susceptibilities present in some cases are due to intrinsic resistance of E. aerogenes to penicillin, Enterococci to aminoglycoside and E. coli E. aerogenes and K. pneumoniae to macrolide derivatives.

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The current status and control measures of BSE in the worldwide (국내, 외 광우병의 발생 현황과 대응 방안)

  • Yoo, Han-Sang
    • 한국환경농학회:학술대회논문집
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    • 2009.07a
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    • pp.273-282
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    • 2009
  • The transmissible spongiform encephalopathies (TSEs) disease group are fatal neurodegenerative disorders affecting a wide range of hosts. The group includes kuru and Creutzfeldt-Jakob disease (CJD) in humans, scrapie in sheep and goats and Bovine spongiform encephalopathy (BSE) in cattle. The exact nature of the infectious agent involved in the transmission of these diseases remains controversial. However, a central event in their pathogenesis is the accumulation in infected tissues of an abnormal form of a host-encoded protein, the prion protein (PrP). Whereas the normal cellular protein is fully sensitive to protease ($PrP^{sen}$), the disease-associated prion protein ($PrP^d$) is only partly degraded ($PrP^{res}$), its amino-terminal end being removed. BSE was first reported in the mid-80s in the UK. Ten years later, a new form of human prion disease, variant CJD (vCJD) developed in the wake of the BSE epidemic, and there is now strong scientific evidence that vCJD was initiated by the exposure of humans to BSE-infected tissues, thus indicating a zoonotic disease. However, the ban on the feeding of animal-derived proteins to ruminants, and the apparent lack of vertical transmission of BSE, have led to a decline in the incidence of the disease within cattle herd and therefore, an assumed decreased risk for human contacting vCJD. The origin of the original case(s) of BSE still remains an enigma even though three hypotheses have been raised. Hypotheses are i) sheep- or goat-derived scrapie-infected tissues included in meat and bone meal fed to cattle, ii) a previously undetected sporadic or genetic bovine TSE contaminating cattle feed or iii) originating from a human TSE through animal feed contaminated with human remains. A host cellular membrane protein ($PrP^C$), which is abundant in central nervous system tissue, appear to be conformationally altered in the diseased host into a prion protein ($PrP^{Sc}$). This $PrP^{Sc}$ is detergent insoluble and partially protease-resistant ($PrP^{res}$). The term $PrP^{res}$ is normally used to describe the protein detected after protease treatment, in techniques such as Western immunoblotting, and enzyme-linked immunosorbant assay using fresh/frozen tissue. Immunohistochemistry may performed with formalin-fixed tissues. Also, clinical signs of the BSE are one of the major diagnostic indicators. Recently, atypical forms (known as H- and L-type) of BSE have appeared in several European countries, Japan, Canada and the United States. An unusual case was also reported in a miniature zebu. The atypical BSE fall into two groups based on the relative molecular mass (Mm) of the unglycosylated $PrP^{res}$ band relative to that of classical BSE, one of the higher Mm (H-type) and the other lower (L-type). Both types have been detected worldwide as rare cases in older animals, at a low prevalence consistent with the possibility of sporadic forms of prion diseases in cattle. This raises the unwelcome possibility that vCJD could increase in the human population. Now, active surveillance program against BSE is going on in Korea. In regional veterinary service lab, ELISA is applied to screen the BSE in slaughter and confirmatory tests by Western immunoblotting and immunohistochemisty are carried out if there are positive or suspect in the screening test. Also, the ruminant feed ban is rigorously enforced. Removal of specified risk materials such as brain and spinal cord from cattle is mandatory process at slaughter to prevent the infected material from entering the human food chain.

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Neural pathway innervating ductus Deferens of rats by pseudorabies virus and WGA-HRP (흰쥐에서 WGA-HRP와 pseudorabies virus를 이용한 정관의 신경로에 대한 연구)

  • Lee, Chang-Hyun;Chung, Ok-Bong;Ko, Byung-Moon;Lee, Bong-Hee;Kim, Soo-Myung;Kim, In-Shik;Yang, Hong-Hyun
    • Korean Journal of Veterinary Research
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    • v.43 no.1
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    • pp.11-24
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    • 2003
  • This experimental studies was to investigate the location of PNS and CNS labeled neurons following injection of 2% WGA-HRP and pseudorabies virus (PRY), Bartha strain, into the ductus deferens of rats. After survival times 4-5 days following injection of 2% WGA-HRP and PRV, the rats were perfused, and their brain, spinal cord, sympathetic ganglia and spinal ganglia were frozen sectioned ($30{\mu}m$). These sections were stained by HRP histochemical and PRY inummohistochemical staining methods, and observed with light microscope. The results were as follows ; 1. The location of sympathetic ganglia projecting to the ductus deferens were observed in pelvic ganglion, inferior mesenteric ganglion and L1-6 lwnbar sympathetic ganglia. 2. The location of spinal ganglia projecting to the ductus deferens were observed in T13-L6 spinal ganglia. 3. The PRY labeled neurons projecting to the ductus deferens were observed in lateral spinal nucleus, lamina I, II and X of cervical segments. In thoracic segments, PRY labeled neurons were observed in dorsomedial part of lamina I, II and III, and dorsolateral part of lamina IV and V. Densely labeled neurons were observed in intermediolateral nucleus. In first lumbar segment, labeled neurons were observed in intermediolateral nucleus and dorsal commisural nucleus. In sixth lumbar segment and sacral segments, dense labeled neurons were observed in sacral parasympathetic nuc., lamina IX and X. 4. In the medulla oblongata, PRV labeled neurons projecting to the ductus deferens were observed in the trigeminal spinal nuc., A1 noradrenalin cells/C1 adrenalin cells/caudoventrolateral reticular nuc., rostroventrolateral reticular nuc., area postrema, nuc. tractus solitarius, raphe obscurus nuc., raphe pallidus nuc., raphe magnus nuc., parapyramidal nuc., lateral reticular nuc., gigantocellular reticular nuc.. 5. In the pons, PRV labeled neurons projecting to the ductus deferens were ohserved in parabrachial nuc., Kolliker-Fuse nuc., locus cooruleus, subcooruleus nuc. and AS noradrenalin cells. 6. In midbrain, PRV labeled neurons projecting to the ductus deferens were observed in periaqueductal gray substance, substantia nigra and dorsal raphe nuc.. 7. In the diencephalon, PRV labeled neurons projecting to the ductus deferens were observed in paraventricular hypahalamic nuc., lateral hypothalamic nuc., retrochiasmatic nuc. and ventromedial hypothalamic nuc.. 8. In cerebrum, PRV labeled neurons projecting to the ductus deferens were observed in area 1 of parietal cortex. These results suggest that WGA-HRP labeled neurons of the spinal cord projecting to the rat ductus deferens might be the first-order neurons related to the viscero-somatic sensory and sympathetic postganglionic neurons, and PRV labeled neurons of the brain and spinal cord may be the second and third-order neurons response to the movement of smooth muscles in ductus deferens. These PRV labeled neurons may be central autonomic center related to the integration and modulation of reflex control linked to the sensory and motor system monitaing the internal environment. These observations provide evidence for previously unknown projections from ductus deferens to spinal cord and brain which may be play an important neuroanatornical basic evidence in the regulation of ductus deferens function.

A Study on the Nurse's Due Care in Medical Malpractice (의료과오시(醫療過誤時) 간호사의(看護師)의 주의의무(注意義務)에 관한 연구(硏究))

  • Kang, Sun-Joo
    • Journal of Korean Academy of Nursing Administration
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    • v.5 no.1
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    • pp.113-136
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    • 1999
  • There are some new trends in judgments concerning medical malpractice. which include emphasis on medical professionals' explanation duty in order to materialize patient's rights of self-determination. Now, patient is not a mere subject of medical and nursing care any more, but a subject, participating in medical practice on equal terms with medical professionals. Legal accountability is no limited to nurses in advanced practice: it is a recognized fact of life for every practicing nurse. whether she is an RN employed as a staff nurse in a hospital, a Certified Nurse-Midwife in independent practice or a patient's home. Therefore, it is essential for nurses to be as familiar as possible with the legal guidelines that govern their patient care responsibilities. However there are only a few studies focused on nursing negligence. To define nurse's civil liability in medical malpractice, it is necessary to indentify both legal nursing behaviors and nurse's due care in those nursing behaviors. So this paper focused on nurse's due care, especially in nursing malpractice. To clarify nurses' due care. chapter II has focused on nursing behavior and the scope of nursing practice based on the medical law and health care related study results. Chapter III deals with the content and scope of nurse's due care. Generally. negligence is defined as not doing something which a resonable person. guided by those ordinary considerations which or dinarily regulate human affairs. would do. or doing something which a resonable and prudent man would not do. Next. it describes how we can set the standard of due care in nursing practice. There is objective factors and subjective factors. And we also discuss about the limitation of due care in nursing practice. Finally. chapter IV deals with the case studies related to nursing negligence in the situation of determination. Now', patient is not a mere subject of medical and nursing care any more, but a subject participating in medical practice on equal terms with medical professionals. Legal accountability is not limited to nurses in advanced practice; it is a recognized fact of life for every practicing nurse. whether she is an RN employed as a staff nurse in a hospital. a Certified Nurse-Midwife in independent practice or a patient's home. Therefore, it is essential for nurses to be as familiar as possible with the legal guidelines that govern their patient care responsibilities. However. there are only a few studies focused on nursing negligence. To define nurse's civil liability in medical malpractice, it is necessary to identify both legal nursing behaviors and nurse's due care in those nursing behaviors. So this paper focused on nurse's intravenous injection. post operation nursing care. blood transfusion. and patient nursing care. The result of this paper is as follows. First. there are several cases dealing with nurse's negligence in nursing practice. however, those cases didn't judge nurse's due care based on individual -specific standard but general-objective standard. Second, there is a tendency to put an emphasis on the principal of belief to distinguish who has the liability in the case of medical malpractice among medical care team. So nurses shoud practice nursing care more actively to protect themselves and patients because there is an effort to form professional nurse system and the scope of nursing practice will be deeper and broader. Third, standard of care is a necessary element in establishing negligence. If a nurse is able to meet the standard of care, no breach will be found.

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