• Title/Summary/Keyword: 발병기전.병인

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미국 부저병 (AFB: American foul brood) '병 증세 이전에 AFB를 발견하는 방법'

  • Traynor, Kirsten S.
    • The Korea Beekeeping Bulletin
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    • s.338
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    • pp.39-45
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    • 2008
  • 댁의 벌에 미국부저병(AFB)이 발병해 다음해 수익을 기약할 수 없게 됐는데, 내가 만약 간단한 검사방법으로 미국부저병이 발병하기전 발병 유무를 알 수 있다고 말한다면 흥미가 가겠는가? 더욱이 발병을 막을 수 있는 간단한 처치방법이 항생제를 포함하지 않는가면 말이다.

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뉴캣슬병의 발병기전과 예방대책

  • Kim, Jae-Hong
    • Feed Journal
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    • v.2 no.8
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    • pp.114-117
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    • 2004
  • 뉴캐슬병은 국제동물보건기구인 국제수역사무국(OIE)에서 고병원성 조류인플루엔자, 구제역, 돼지콜레라 등과 같이 세계적인 악성 가축전염병 (15종)인 A등급으로 분류하여 관리할 정도로 피해가 심각한 질병으로서 국가간의 축산물 교역과 방역에 이TDj 특별히 취급하도록 권장하고 있고, 예방접종을 하지 않은 계군에 감염되면 거의 100%의 폐사를 일으킬 정도로 무서운 닭의 전염병이다.(중략)

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OSTEORADIONECROSIS ON MANDIBLE : A CASE REPORT AND LITERATURE REVIEW (하악골에 발생한 방사선골괴사증 증례보고 및 문헌고찰)

  • Park, Jin-Hyuk;Shin, Sun-Ho;Lee, Su-Woon;Kim, Woo-Hyung
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.32 no.5
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    • pp.458-463
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    • 2006
  • The osteoradionecrosis of the mandible can be a serious complication of radiotherapy for malignancies of the head and neck. The cause and pathogenesis of osteoradionecrosis are unclear and anecdotal. There are various treatment-, patient- and tumor-related risk factors on development of osteoradionecrosis. The treatment of osteoradionecrosis relies on conservative measures (antibiotics, debridement, irrigation and HBO) and surgical measures (sequestrectomy, marginal resection and segmental resection with or without reconstruction). But the indications are not defined. We present the two cases of patients who were not controlled by conservative treatment but good-resulted by surgical treatment.

'HWABYUNG' in the view of Oriental Medinine (한의학에서 본 홧병의 해석)

  • Kim Jong-Woo;Whang Wei-Wan
    • Journal of Oriental Neuropsychiatry
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    • v.5 no.1
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    • pp.9-15
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    • 1994
  • Hwabyung is a culture-related disease generally know among people in Korea, and various studies have been done by the Psychiatrists and by the Oriental Medical Doctors. While the Psychiatrists explain the Hwabyung as a disease having a unique patholoical process, the Oriental Medical Doctors explain it as a symptoms having the character of fire. When interpreted in Oriental Medical point of view, this can be concluded as 1)the cause of the disease is the depression of liver-energy(肝氣鬱結) induced by emotional suppression, 2)the reason why the disease occurs mostly to female is that they usually fail overcoming stresses and have physical and visceral weaknesses, 3)the symptoms are associated with the dynamics of fire, because the disease originates from the rising character of fire and from the inadequit supression of extreme heart-fire(心火) by the kidney-wter(腎水), 4)the reason why the disease goes through chronic process is because of the complexed emotions, converted fire caused by prolonged emotional disorder and inapropreate supression of fire with grow older. This results suggest thst the cooperative study of the clinical examination of the Psychiatrsis and the study on the fire by the Oriental Medical Doctors is necessary to establish the process of the disease, the pathological procedure, the prognosis and the method of treatment.

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Immunohistochemistry and RT-PCR for pathogenesis of Newcastle disease in chickens (닭 뉴캣슬병의 발병기전 규명을 위한 RT-PCR 및 면역조직화학적 연구)

  • 이민권;진영배;문운경;김순복
    • Korean Journal of Veterinary Service
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    • v.27 no.1
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    • pp.63-73
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    • 2004
  • The present experiment was carried out to study the pathogenesis of Newcastle disease(ND), ND virus (NDV) antigens and genes in various organs from NDV inoculated chickens were detected by immunohistochemistry and RT-PCR. Immunohistochemically, NDV antigens were detected in the spleen, thymus, cecal tonsil, proventriculus, trachea and lungs at 12 hour post-inoculation (hpi). Viral antigens were localized mainly in the cytoplasm of lymphocytes and macrophages. After 48 hpi, clinical findings of the affected chickens were open-mouth breathing, conjunctivitis, watery diarrhea and edema around the eye and neck. After 72 hpi, chickens showed muscular tremor, paralysis of the legs and wings, and coma. Histopathological results consist of multi-focal necrosis with hemorrhages in lymphoid aggregates of the intestinal tracts, necrosis of the lymphoid tissues, neuronal degeneration and necrosis, and perivascular cuffing. Using RT-PCR, virus genes were detected in the spleen and proventriculus at 48 hpi, and in the brain at 60 hpi.

The Role of Increased Oxidative Stress in the Development of Diabetic Nephropathy (당뇨병성 신증의 발생에 있어서 산화성 스트레스의 역할)

  • Jang Yeon-Jin;Park Hyoung-Sup;Kim Hyoun-Sik;Hong Hea-Nam;Kim Mi-Kyung
    • The Korean Journal of Pharmacology
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    • v.31 no.1 s.57
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    • pp.95-102
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    • 1995
  • The pathogenesis of diabetic nephropathy is still not completely understood while renal disease is one of the most common disabling complications of diabetes. We, in the present study, investigated the possible involvement of oxidative stress in the development of diabetic nephropathy. To hasten the development of diabetic nephropathy, streptozotocin was injected to unilaterally nephrectomized rats (NEPH-STZ). Eight weeks later, NEPH-STZ rats developed severe hyperglycemia, proteinuria, and hypertension. The kidneys of these rats showed compensatory hypertrophy and mesangial expansion. In contrast, the rats with streptozotocin injection alone (STZ) did not increase urinary protein excretion. Nephrectomized non-diabetic rats (NEPH) developed increased urine protein excretion, but without prominent renal morphological changes. However, oxidation of renal cortical tissue protein significantly increased in all 3 groups of NEPH, STZ and NEPH-STZ in comparison to control rats (CONT). The result indicates the non-specificity of the oxidative tissue damage and suggests that the oxidative damage is hardly a sole mechanism leading to the development of the diabetic nephropathy. However, it would still be a contributing factor considering that the oxidative stress is a common final pathway mediating tissue damages in chronic diabetic complications and other serious illness.

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Recent Studies on Anorexia and Tissue Wasting Induced by Cancer Cachexia (암 악액질의 주요 병인 기전 및 최근 연구 동향)

  • Yeom, Eunbyul
    • Journal of Life Science
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    • v.32 no.3
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    • pp.263-269
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    • 2022
  • Cancer cachexia-anorexia is a multi-organ metabolic syndrome characterized by anorexia and weight loss. Generally, such symptoms are a serious problem in cancer patients, adversely affecting chemotherapy success and survival rate. Cachexia has been reported to accompany up to 80% of gastrointestinal cancers, such as pancreatic, lung, and colon cancer, though it is relatively rare in lymphoma or breast cancer patients. It is also known that cancer-induced anorexia occurs independently of chemotherapy, although decreased appetite due to chemotherapy is well reported. In terms of pathoflammatory cytokines that are excessively increased by tumor tissues. Since the mechanism of cancer cachexia is not yet fully understood, there are currently no therapeutic agents or diagnostic markers to treat it. A recently published study identified a substance secreted from cancer cells that induces cancer anorexia, and the molecular mechanism causing the eating disorder was discovered. An increase in the expression of this substance has been shown to be statistically correlated with the symptoms of cachexia in cancer patients, and it is therefore expected to be applicable in the diagnosis and development of therapeutic agents for cancer cachexia. This review article aims to provide an overview of the key molecular mechanisms of the anorexia and tissue wasting caused by cancer cachexia.

An 8-month-old Male Infant with High Grade Vesicoureteral Reflux who Developed Incomplete Kawasaki disease after Recurrent Pyelonephritis (급성 신우신염이 재발한 후 불완전 가와사끼병이 발생한 고도의 방광요관역류가 있는 8개월 남아)

  • Jung, Su Jin;Park, Sung Eun;Lee, Jun Ho
    • Childhood Kidney Diseases
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    • v.18 no.1
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    • pp.42-46
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    • 2014
  • Kawasaki disease (KD) is a systemic vasculitis that can affect many organ systems. Renal manifestations include pyuria, hematuria, proteinuria, tubulointerstitial nephritis, acute renal failure, hemolytic uremic syndrome, or renal scarring. Although its precise pathogenesis remains unknown, it is considered an autoimmune disease. In the literature, it has been reported that KD may develop in conjunction with urinary tract infections. However, many of these previous studies did not use imaging methods such as renal sonograms, dimercaptosuccinic acid renal scans, and voiding urethrocystograms. We report a case of an 8-month old male infant with high grade vesicoureteral reflux, who developed incomplete KD after recurrent pyelonephritis. Acute pyelonephritis can be an early manifestation of KD. Such cases require the evaluation of urinary tract anomalies according to the guidelines for the management of urinary tract infections.

Nitric oxide production and inducible nitric oxide synthase expression induced by Porphyromonas gingivalis lipopolysaccharide (Porphyromonas gingivalis의 세균내독소가 RAW264.7세포에서의 nitric oxide의 생성과 inducible nitric oxide synthase의 발현에 미치는 영향 및 기전)

  • Paek, Eun-Young;Choi, Eun-Young;Choi, Jeom-II;Lee, Ju-Yun;Kim, Sung-Jo
    • Journal of Periodontal and Implant Science
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    • v.35 no.4
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    • pp.1081-1095
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    • 2005
  • 본 연구는 치주질환 주요 병인균주 중의 하나인 Porphyromonas gingivalis의 세균내독소가 마우스 대식 세포주인 RAW264.7 세포에서의 nitric oxide의 생성과 iNOS의 발현에 미치는 영향을 분석하고 그 기전을 규명하기 위해 수행되었다. Butanol추출법과 phenol-water법에 의해 P. gingivalis 381로부터 세균내독소를 추출하였으며, NO의 생성은 배양 상층액 내의 nitrite 농도를 측정하여 결정하였다. 또한, iNOS의 western blot 분석과 reverse transcription (RT)-PCR 산물의 분석을 수행하였다. P. gingivalis의 세균내독소는 부가적인 자극이 없는 상태에서도 iNOS의 발현과 NO 생성을 유발하였으며, NF- ${\kappa}B$, microtubule polymerization, protein tyrosine kinase, 그리고 protein kinase C 등이 P. gingivalis 세균내독소에 의한 NO 생성에 간여하는 것으로 여겨진다. 또한, P. gingivalis 세균내독소에 의한 NO 생성에는 L-arginine이 요구되었다. P. gingivalis 세균내독소에 의한 NO 생성은 염증성 치주질환의 발병과 진행에 있어 중요한 역할을 하는 것으로 여겨진다.