• Clinical and Experimental Pediatrics
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• 제52권5호
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• pp.544-548
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• 2009

목 적 : 본 연구에서는 철결핍성 빈혈의 주된 호발 연령인 영유아를 대상으로 HP 감염 유무와 철결핍성 빈혈과의 상관관계를 연구하고자 하였다. 이전의 연구에서는 페리틴을 주 지표로 철결핍성 빈혈과 HP 감염과의 상관관계를 연구하였다. 철결핍성 빈혈 영유아의 대부분은 급성 상기도 감염 및 요로감염 등으로 내원하므로 급성 감염 시에 영향을 받는 페리틴 외에 철 대사의 이용이나 저장에 관련된 다른 인자들을 동시에 비교해보고자 하였다. 방 법 : 2000년부터 2006년까지 경상대학교병원에 내원한 6-24개월 영유아 135명을 대상으로 하였다. 혈청 HP CagA 항원(120kD)에 대한 western blot 을 시행하여 감염 유무를 분류하고 (Fig.1) 이들의 혈색소(g/dL), 혈청 페리틴(ug/L), sTfR, (mg/L), Interleuken (IL)-6 (pg/mL), prohepcidin (ng/mL)과 C-reactive protein (CRP) (mg/L)(이하 6인자)를 측정하였다. 또한 이들을 혈색소와 페리틴 수치에 따라 철결핍성빈혈군(IDA), 염증성빈혈군(AI), 미분류빈혈군(UCA) 그리고 정상군(Nor)으로 분류하였다. 통계량 분석은 Mann Whitney U test를 사용하였고 SPSS 14.0 버전을 사용하여 P값이 0.05미만인 경우에 통계적으로 유의한 것으로 평가하였다. 결 과 : IDA, AI, UCA 그리고 Nor 군에서 HP 감염률 비교는 통계적으로 유의한 차이가 없었다. IDA (N=20)에서 HP 감염이 있는 환아는 7명, 감염이 없는 환아는 13명이었다. 이들 두 그룹의 혈색소 평균은 각각 7.1과 8.2 g/dL로 HP 감염이 있는 환자에서 유의하게 낮았으며 페리틴은 각각 3.2, 6.8 ug/L로 HP감염이 있는 그룹에서 유의하게 낮았다. 또한 IDA외에 다른 군에서는 HP 감염 유무에 따라 6가지 인자를 각각 비교하였으나 유의한 차이는 없었다. 또한 전체 대상 환아에서 HP 감염 유무에 따라 6인자를 각각 비교하였으나 통계적으로 유의한 차이는 없었다. 결 론 : 철결핍성 빈혈이 있는 영유아(6-24개월)의 HP 감염 유병률은 대조군들과 유의한 차이가 없었다. 본 연구에서는 HP 감염이 있는 철결핍성 빈혈 군에서 sTfR 농도가 유의한 차이를 보인 청소년기 환아 에서의 연구와는 달리 sTfR은 유의한 차이를 보이지 않고 오히려 혈청 페리틴 농도와 혈색소가 의미 있게 낮게 측정되었다. 본 연구에서는 대상 환자인 철결핍성 빈혈군 환자수가 적고 환자들의 식이 등이 고려되지 않았으므로 더 많은 환자를 대상으로 연구가 시행되어야 하겠다.

• 대한미생물학회지
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• 제21권1호
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• pp.133-144
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• 1986

This study was undertaken to assess the effect of ginseng administration on T lymphocyte induced local xenogenic graft-versus-host(GVM) reactions which were induced with thymocyte, spleen cell and lymph node cell of ICR mice. Mice received daily 10mg of 70% alcohol ginseng extract oral1y for 100days and control mice remained untreated for the same period of time. The cells from donor mice were injected intradermally into the closely shaven abdominal skin of Sprague-Dawley rats for GVH tests. The thymocyte from control(ginseng-untreated) mice showed a negative local GVH reaction, whereas thymocyte from experimental(ginseng-treated) mice showed a positive reaction with the rate of 17.4%. When spleen cells were injected, the incidence of positive local GVH reaction was 66.7% among ginseng-treated mice, as opposed to incidence of 45.5% of positive local GVH reaction among control mice. The incidence of positive local GVH reaction of the lymph node cells when injected into a recipient was 71.4% among ginseng-treated mice as compared with that of 18.9% among control mice. The relationship between spleen cell inoculum and intensity of the local GVH reaction was assessed in ginseng-untreated mice. The intensity of GVH reaction clearly appears to be dose related. In ginseng-treated mice, a minimum of $1{\times}10^7$ spleen cell was required for production of positive local GVH reaction with almost linear relationship up to an inoculum of $5{\times}10^8$ cells. In control mice, however, a minimum of $1{\times}10^8$ spleen cells was required for positive GVH reaction. These results strongly suggest that the ginseng administration augments significantly the local xenogenic GVH reaction which was used to assess T lymphocyte function and immunocompetence of mice and in addition to this, these results appear to support previous suggestions that the local GVH reaction consitutes a qualitative test of the functional activity of T lymphocytes. These results may be the first to induce local GVH reaction, employing rats as recipient and mice as donor. This study was also desingned to investigate some of the effects of ginseng extract on lymphocyte-macrophage interactions. This was accomplished by in vitro quantification of 1) migratory inhibitory factor(MIF) synthetic capacity of splenic lymphocytes in mice previously primed with ginseng 2) MIF responsiveness of mouse peritoneal macrophages or chicken peripheral leucocytes under the presence of ginseng extract 3) migration ability of chicken peripheral leucocytes by direct stimulation of ginseng extract or ginseng saponin and 4) immunosuppressive effects of immunosuppressants such as cyclophosphamide, cyclosporin A or dexamethasone. Mice divided equally into the ginseng and the saline groups, which received intraperitoneally daily 0.2ml of ginseng absolute alcohol-extract(5mg/ml) and same amount of saline for 15 days, respectively. The cellular immune responsiveness of these mice was assayed 15 days after ginseng pretreatment. Splenic lymphocytes of mice treated with ginseng, when stimulated with sensitized specific-antigen such as sheep red blood cells or toxoplasmin, or with polyclonal activator concanavalin A, produced significantly more MIF than those of control saline group. MIF responsiveness of normal mouse macrophages was significantly augmented when assayed under the presence of ginseng extract (1mg/ml). The migratory ability of normal chicken leucocytes in the absence of MIF was significantly decreased by the stimulation of ginseng extract alone. MIF response was significantly decreased by immunosuppressants and this impaired response was not restored by ginseng pretreatment. This study was additionally performed to evaluate the effect of ginseng on the expulsion of adult Trichinella spiralis in mice. ICR mice were infected experimentally by esophageal incubation of 300 T. spiralis infective muscle larvae prepared by acid-pepsin digestion of infected mice. and received oral administration of 70% alcohol ginseng extract(10mg/mouse/day) for the indicated days plus 4 days before infection. At various times after infection, the number of adult T. spiralis worms in small intestines was determined. Interestingly, ginseng-treatment was accompanied by accelerated expulson of T. spiralis. These results led to the conclusion that Panax ginseng caused some enhancing effect on GVH reaction, macrophage migration inhibition reaction and expulsion of T. spiralis. In addition these results suggested that the mechanisms responsible for this enhancement of ginseng may be chiefly or partially due to nonspecific stimulation of cell-mediated immune response.

• Clinical and Experimental Pediatrics
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• 제53권3호
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• pp.380-391
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• 2010

목 적 : RSV는 영아기에 세기관지염이나 폐렴을 일으키는 중요한 요인으로 알려져 있다. 건강한 영아에서는 RSV 감염으로 위중한 병을 일으키는 경우는 드물지만 선천성심장병과 관련된 심부전이나 청색증, 폐동맥고혈압의 상태에 있거나 조산 미숙 등과 관련된 만성폐질환 상태에 있는 영아의 경우 위중한 병을 일으킬 수 있다. 본 연구에서는 선천성심장병 소아와 비선천성심장병 소아에서 RSV 감염례를 조사하여 RSV 감염이 선천성심장병 환아에 미치는 영향에 대하여 조사하고자 하였다. 방 법 : 2003년 7월부터 2006년 6월까지 세종병원에 세기관지염이나 폐렴으로 입원한 343례의 환아의 비강 분비물에서 RSV 항원검사를 시행하여 RSV 감염에 의한 하기도염의 연령별 계절별 발생 양상을 조사하였다. RSV 감염된 하기도염 환아들에서 선천성심장병 환아의 여러 경우와 비심장병 환아의 입원 기간, 중환자 치료, 인공환기 치료 등 임상 경과를 비교하였다. 결 과 : RSV에 의한 하기도염은 어린 영아기에 많이 발생하고 있으며 온대지방에서는 겨울철에 유행하는 양상을 보이고 있다. RSV에 의한 하기도염 환아 중 선천성심장병 환아에서 비심장병 환아에 비하여 중증 감염이 많았고 장기입원을 보였다(P <0.01). 비교적 간단한 단순단락 병변인 ASD, PDA, VSD 등의 선천성심장병에서 심장수술로 교정되고 충분히 회복된 환자에서는 RSV에 의한 하기도염에서 비교적 짧은 입원기간과 가벼운 경과를 보여 비심장병 환아와 큰 차이가 없었다. 선천성심장병에 대한 완전교정 수술이나 단계적 고식수술 후에도 감염, 폐동맥고혈압, 판막역류, 혈관협착 등의 원인으로 심폐계에 상당한 문제가 남아있는 경우 RSV 감염시 비심장병 환아에 비하여 장기 입원을 보이고(P <0.01) 중증 경과를 보였다. 교정수술 받지 않은 상태의 선천성심장병을 가진 환아에서는 대부분 6개월 이내의 어린 나이에 RSV에 의한 하기도염이 발생하고 있으며 비심장병 환아에 비하여 장기 입원을 보이고(P <0.01) 중증 경과를 보였다. 선천성심장병 심장수술 후 1개월 이내의 회복기에 병원 감염을 포함하여 상당수의 RSV 감염이 발생하고 있음을 확인하였으며 이들은 심장수술 직후의 면역기능 저하와 관련하여 중증 감염으로 발전할 가능성이 있을 것으로 생각된다. 결 론 : 미교정 상태의 선천성심장병 환아와 교정 후에도 계속 심폐계에 문제가 남아있는 선천성심장병 환아에서 RSV 감염에 의해 중증 경과와 장기 입원이 초래될 수 있다. 선천성심장병 환아에서 이러한 RSV 감염의 피해를 줄이기 위해서는 RSV 감염으로 심각한 위험이 초래 될 수 있는 고위험 세부군의 파악과 이들에 대한 예방 항체 치료 등 적절한 예방 노력이 필요하다.

• 대한수의학회지
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• 제11권1호
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• pp.1-39
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• 1971

The purpose of present study was to investigate the possibility to immunize guineapigs and swine against Metastrongylus apri infection by the administration of irradiated infective larvae. Four main experiments were undertaken. Firstly, three groups of infective larvae irradiated at $3{\times}10^4r$, $4{\times}10^4r$, and $5{\times}10^4r$ respectively were inoculated to guineapigs and their immunogenic effects were examined from the clinical, anatomical, and serological viewpoints to decide the optimal dose of X-ray for the atenuation of them. Secondly, the migratory behavior of the larvae irradiated at the optimal dose was compared with that of normal infective larvae. Thirdly, pigs were inoculated with each 5,000 infective larvae irradiated at the optimal dose and the clinical, anatomical and serological responses of them before and after challenge were examined. Fourthly, the heated extract of adult M. apri which had been used as an antigen in the serological examinations was analyzed and compared with that of adult Ascaris suis and of adult Trichuris suis by immunoelectrophoretic method. The results obtained are summerized as follows: 1) The optimal dose of X-ray for the atenuation of the infective larvae which can minimize the pathogenecity but keep the antigenecity of the infective larvae was $5{\times}10^4r$. 2) Guineapigs could become completely resistant to subsequent challenge infection by the administration of 1,000 infective larvae irradiated at $5{\times}10^4r$, without showing any symptom of disease before and after the challenge. 3) There were some indication that guineapigs could acquire complete immunity after they overcome the infection with normal infective larvae. 4) It was shown that, in guineapigs, the $5{\times}10^4r$-irradiated larvae can migrate to the large intestine and mesenteric lymph node within a day, where they stay for as long as 16 days to stimulate the host's immunity. 5) It also was shown that, in guineapigs, the normal infective larvae challenged to resistant guineapigs can migrate to the large intestine and mesenteric lymph node, where they are affected by the immune mechanism of host within 10 days without further migration. 6) Pigs could become partially resistant to subsequant challenge by the administration of 5,000 infective larve irradiated at $5{\times}10^4r$; no clinical symptom occurred after the administration, but milder symptoms of parasitic bronchitis were observable after the challenge infection and fewer number of worms were detected from the lungs at autopsy compared with severe symptoms and much number of worms in control pigs. 7) It was shown that, in pigs, a few of the $5{\times}10^4r$-irradiated larvae can migrate to the lungs, where they stay for as long as 104 days in stunted and sterile states; their body-lengths were short and their uteri developted no eggs. 8) There was evidence that the male larvae were more susceptible to X-ray than the female larvae. 9) Antibodies relating to the administration with $5{\times}10^4r$-irradiated or normal larvae were detected from the sera of both guineapigs and pigs by means of indirect haemagglutination and agar diffusion precipitin tests. Relatively higher antibody titers were recorded by the former test, but precipitin bands were demonstrable only when the positive sera were concentrated in one tenth of original volume in the later one. 10) The antibody titers of pig sera began to rose on 14 days, kept their peak during the period from 14 th day to 21st day, and fell to a low level on 28 days after the administration of $5{\times}10^4r$ or normal infective larvae. 11) A slight increase in gamma globublin of the pig sera occurred following the administration. The gamma globulin level showed a tendency to fluctuate in acordance with the antibody level. 12) A marked eosionophilia occurred in pigs on 7 or 14 days following the administration. The eosinophil count showed the same tendency to fluctuate as the gamma globulin did. 13) It was shown that the serum antibodies detected by the heated extract of adult Metastrongylus apri react crossly with the heated extract of adult Ascaris suis but not with that of adult Trichuris suis in indirect haemagglutination and agar diffusion preciption reactions. 14) The heated extract of adult Metastrongylus apri could he divided into 9 antigenic components by immunoelectrophoresis, one (arc 4) of which was shown to be common to both extracts of adult Ascaris suis and adult Trichuris suis, and the other one (arc 9) to only the extract of adult Ascaris suis.