• BMB Reports
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• 제52권4호
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• pp.289-294
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• 2019

The present study evaluated the role of AHNAK in Bartonella henselae infection. Mice were intraperitoneally inoculated with $2{\times}10^8$ colony-forming units of B. henselae Houston-1 on day 0 and subsequently on day 10. Blood and tissue samples of the mice were collected 8 days after the final B. henselae injection. B. henselae infection in the liver of Ahnak-knockout and wild-type mice was confirmed by performing polymerase chain reaction, with Bartonella adhesion A as a marker. The proportion of B. henselae-infected cells increased in the liver of the Ahnak-knockout mice. Granulomatous lesions, inflammatory cytokine levels, and liver enzyme levels were also higher in the liver of the Ahnak-knockout mice than in the liver of the wild-type mice, indicating that Ahnak deletion accelerated B. henselae infection. The proportion of CD4+interferon-${\gamma}$ ($IFN-{\gamma}^+$) and $CD4^+$ interleukin $(IL)-4^+$ cells was significantly lower in the B. henselae-infected Ahnak-knockout mice than in the B. henselae-infected wild-type mice. In vitro stimulation with B. henselae significantly increased $IFN-{\gamma}$ and IL-4 secretion in the splenocytes obtained from the B. henselae-infected wild-type mice, but did not increase $IFN-{\gamma}$ and IL-4 secretion in the splenocytes obtained from the B. henselae-infected Ahnak-KO mice. In contrast, $IL-1{\alpha}$, $IL-1{\beta}$, IL-6, IL-10, RANTES, and tumor necrosis $factor-{\alpha}$ secretion was significantly elevated in the splenocytes obtained from both B. henselae-infected wild-type and Ahnak-knockout mice. These results indicate that Ahnak deletion promotes B. henselae infection. Impaired $IFN-{\gamma}$ and IL-4 secretion in the Ahnak-knockout mice suggests the impairment of Th1 and Th2 immunity in these mice.

• 한국발생생물학회지:발생과생식
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• 제21권4호
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• pp.371-378
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• 2017

Interferon-stimulated gene 15 (ISG15) is known to interfere with viral replication and infection by limiting the viral infection of cells. Interferon-stimulated gene 15 (ISG15) interferes with viral replication and infectivity by limiting viral infection in cells. It also plays an important role in the immune response. In this study, tissue-specific expression of ISG15 in healthy rock bream samples and spatial and temporal expression analysis of rock bream ISG15 (RbISG15) were performed following rock bream iridovirus (RSIV) infection. RbISG15 expression was significantly higher in the eye, gill, intestine, kidney, liver, muscle, spleen, and stomach, but low in the brain. There were particularly high levels of expression in the liver and muscle. RbISG15 expression was also examined in several tissues and at various times following RSIV infection. ISG15 expression increased within 3 h in the whole body and decreased at 24 h after infection. In addition, temporal expression of several tissues following RSIV infection showed a similar pattern in the muscle, kidney, and spleen, increasing at 3 h and decreasing at 72 h. These results suggest that ISG15 plays an important role in the immune response of rock bream. Overall, this study characterizes the response of RbISG15 following RSIV infection.

• 미생물과산업
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• 제13권3호
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• pp.3-11
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• 1987

Hepatitis B virus (HBV) is a very serious threat to public health in most of the developing countries of the world. It is estimated that around 300 million people worldwide are chronic carriers of this virus and will transmit the disease both vertically and horizontally. Infection by this virus may cause a wide range of clinical manifestations ranging from an asymptomatic infection to liver cirrhosis.

• 대한핵의학회지
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• 제36권3호
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• pp.185-194
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• 2002

목적: 방사성교질 간 스캔에서 폐 방사능이 관찰된 환자들의 임상적 소견을 바탕으로 간 스캔에서 폐 방사능이 관찰되는 질환의 종류를 알아보고 각 질환에 따른 폐 방사능 섭취 기전 및 환자 임상 경과를 알아보았다. 대상 및 방법: 대상 환자 총49명의 의무 기록 조사를 통하여 Tc-99m tin colloid 간 스캔에서 폐 방사능이 관찰될 당시의 주 진단명을 기준으로 대상 환자를 간 질환, 감염성 질환, 암, 허혈성 간 괴사, 기타 등 다섯 가지 질환군으로 분류하고, 각 질환군 환자들의 만성 간 질환 여부, Child-Pugh 등급, 혈청 AST, ALT수치, 추적 간 스캔 결과 및 임상 경과를 알아보았다. 결과: 총 49명중 25명에서 만성 간 질환이 있었고, 질환군별 환자수는 간 질환 23명, 감염성 질환 16명, 암 7명, 허혈성 간 괴사 2명, 기타 1명이었다. 혈청 AST, ALT 수치는 간 질환군과 허혈성 간 괴사 군 환자 모두에서 가역적 상승을 보였고, 이는 통계적으로 유의하였다(p<0.01, one-way ANOVA). 혈청 ALT 수치는 만성 간 질환이 없는 간 질환군에서 감염성 질환군에 비하여 유의하게 높았다(p<0.05). 추적 간 스캔검사가 시행된 총 17명 중 13명에서 추적 간 스캔에서 폐 방사능이 관찰되지 않았으나, 암 2명, 간과 신장의 다낭성 질환과 간 경변이 있는 독성 간염 1명 그리고 간 결핵 1명에서 추적 간 스캔에서 폐 방사능이 관찰되었다. 사망 환자는 총 12명으로 사인은 만성 간 질환 악화에 의한 간 부전 6명, 말기암 5명, 감염성 심내막염에 합병된 뇌출혈 1명이었다. 결론: 간 스캔에서 폐 방사능은 망상내피계 세포가 자극되는 심한 감염증 및 말기 암, 그리고 광범위한 간의 염증 또는 괴사를 동반하는 급, 만성 간 질환 및 허혈성 간 질환 등에서 관찰되는 것으로 판단된다.

• The Korean Journal of Physiology and Pharmacology
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• 제17권5호
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• pp.375-383
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• 2013

Hepatocellular carcinoma (HCC) related to hepatitis B virus (HBV) and hepatitis C virus (HCV) infections is thought to account for more than 80% of primary liver cancers. Both HBV and HCV can establish chronic liver inflammatory infections, altering hepatocyte and liver physiology with potential liver disease progression and HCC development. Cyclophilin A (CypA) has been identified as an essential host factor for the HCV replication by physically interacting with the HCV non structural protein NS5A that in turn interacts with RNA-dependent RNA polymerase NS5B. CypA, a cytosolic binding protein of the immunosuppressive drug cyclosporine A, is overexpressed in many cancer types and often associated with malignant transformation. Therefore, CypA can be a good target for molecular cancer therapy. Because of antiviral activity, the CypA inhibitors have been tested for the treatment of chronic hepatitis C. Nonimmunosuppressive Cyp inhibitors such as NIM811, SCY-635, and Alisporivir have attracted more interests for appropriating CypA for antiviral chemotherapeutic target on HCV infection. This review describes CypA inhibitors as a potential HCC treatment tool that is contrived by their obstructing chronic HCV infection and summarizes roles of CypA in cancer development.

• Pediatric Infection and Vaccine
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• 제9권1호
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• pp.95-99
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• 2002

저자들은 내원 1개월 전부터의 고열 복통을 주소로 전원되어 복수를 동반한 EBV 연관성 VAHS로 진단된 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• 한국동물위생학회지
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• 제44권1호
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• pp.35-43
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• 2021

Rabbit infectious hemorrhagic fever has been reported in rabbits worldwide. The disease is also frequently reported on Korean rabbit farms, and the pathological study of 9 rabbits on such disease-occurring farms was attempted to identify the pathogen. Clinical signs were torticollis and ear ulceration. Most rabbit died with bloody nasal discharges. At necropsy, multiple hemorrhages and inflammation were observed in heart, lung, liver and uterus. The main histopathologic features were hemorrhagic suppurative meningoencephalitis, fibrinous bronchointerstitial pneumonia, bacteremia, liver cell necrosis, multifocal hemorrhages in kidney and disseminated intravascular coagulopathy. The viral VP60 gene of RHDV was identified by Reverse Transcriptase PCR. Pasteurella multocida organisms were cultured, identified by biochemical test and serotyped as A by multiplex capsular typing PCR. In conclusion, the fatal hemorrhagic disease was due to combined infection with both RHDV and P. multocida in rabbits. To our knowledge, this is the first case report about co-infection with both RHDV and P. multocida in rabbits in Korea.

• Asian Pacific Journal of Cancer Prevention
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• 제14권10호
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• pp.5891-5893
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• 2013

Incidence/mortality of liver cancer follow logistic curves because there is a limit reflecting the prevalence of hepatitis virus carriers in the cohort. The author fitted logistic curves to incidence/mortality data covering the nine five-year cohorts born in 1911-1955 of both sexes. Goodness-of-fit of logistic curves was sufficiently precise to be used for future predictions. Younger cohorts born in 1936 or later were predicted to show constant decline in incidence/mortality in the future. The male cohort born in 1931-35 showed an elevated incidence/mortality of liver cancer early in their lives supporting the previous claim that this particular cohort had suffered massive HCV infection due to nation-wide drug abuse in the 1950s. Declining case-fatality observed in younger cohorts suggested improved treatment of liver cancer. This study demonstrated that incidence/mortality of liver cancer follow logistic curves and fitted logistic formulae can be used for future prediction. Given the predicted decline of incidence/mortality in younger cohorts, liver cancer is likely to be lost to history in the not-so-distant future.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제24권2호
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• pp.119-126
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• 2021

The aim of our paper was to present current knowledge, review literature and available practice guidelines of international hepatological associations regarding the effect of severe acute respiratory syndrome coronavirus 2 coronavirus on the liver, patients with underline liver disease, awaiting on liver transplantation (LTx) or being after LTx in the pandemic coronavirus disease 2019 area.

• Korean Journal of Radiology
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• 제1권3호
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• pp.165-168
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• 2000

We present two cases of solitary necrotic nodules of the liver which on radiologic images mimicked hepatic metastasis. Solitary necrotic nodule of the liver is a rare but benign entity which histopathologically consists of an outer fibrotic capsule with inflammatory cells and a central core of amorphous necrotic material. The lesion was seen on contrast-enhanced CT as an ovoid-shaped hypoattenuating nodule; on CT during hepatic arteriography as enhancing nodule; on intraoperative US as a target-appearing hypoechoic nodule; on T2WI as a hyperintensity nodule, and on dynamic MR as a subtle peripheral enhancing nodule. Although the radiologic features are not specific, solitary necrotic nodule of the liver should be included in the differential diagnosis of hepatic metastasis.