• Tuberculosis and Respiratory Diseases
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• v.50 no.5
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• pp.630-635
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• 2001

Tuberculosis is a common chronic infectious disease, although the spleen is an uncommon organ to harbor tubercle bacilli. Immunocompromised subjects are primarily prone to miliary tuberculosis and in them the spleen is invaded by Mycobacterium tuberculosis. Spleen tuberculosis is manifested commonly as a miliary form. The basic pathology is granulomatous inflammation. The CT findings of splenic tuberculosis are multiple, well-defined, round or ovoid, low-density masses. Lymphadenopathy in the abdomen and mediastinum and pleural effusion can be found. We report two cases with tuberculosis of the spleen proved by computed tomography and histologic identification. One patient did not improve following antituberculous medication, so splenectomy was performed. The other patient has been treated with antituberculous medication.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.7 no.1
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• pp.108-111
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• 2004

Tuberculosis is not a common cause of liver abscess and it is rarely considered in the differential diagnosis of a patient with hepatic mass. We report a case of tuberculous abscess of liver and spleen in a 15-year-old boy who presented with abdominal pain, fever and weight loss. The ultrasonographic and computed tomographic scan of the abdomen revealed multiple cystic lesions in the liver and spleen. Mycobacterium tuberculosis was cultured from the ascitic fluid and biopsy specimen of lymph node. Follow up CT scan of the abdomen after anti-tuberculosis medication for eighteen months showed complete resolution of the cystic lesions with calcified nodules.

• Tuberculosis and Respiratory Diseases
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• v.63 no.1
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• pp.67-71
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• 2007

결핵은 일차적으로 폐에 주로 발생하지만 혈행성 전파를 통하여 모든 기관에 나타날 수 있으며 면역 억제자의 경우 특히 가능성이 높다. 저자들은 평소 건강했던 속립성 폐결핵 환자에서 간, 비장, 신장, 뇌막 및 뇌실질에 동시에 나타난 다발성 결핵을 보고한다.

• Tuberculosis and Respiratory Diseases
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• v.58 no.2
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• pp.142-152
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• 2005

Background : Priming and boosting vaccination strategy has been widely explored for new vaccine development against tuberculosis. As an effort to identify other vaccine candidates, this study was initiated to evaluate protective efficacy of adenylate kinase (AK), nucleoside diphosphate kinase (NdK), and heat shock protein 70 (Hsp70) of Mycobacterium tuberculosis. Method : M. tuberculosis genes encoding AK, NdK, and Hsp70 proteins were amplified by PCR and cloned into E. coli expression vector, pQE30. Recombinant AK, NdK, and Hsp70 was purified through Ni-NTA resin. To evaluate immune responses, we performed enzyme-linked immunosorbent assay (ELISA) for IgG isotype and $IFN-{\gamma}$ after mice were immunized subcutaneously with recombinant proteins delivered in dimethyl dioctadecylammonium bromide (DDA). Immunized- and control groups were challenged by aerosol with M. tuberculosis. The spleens and lungs of mice were removed aseptically and cultured for CFU of M. tuberculosis. Result : Vaccination with recombinant proteins AK, NdK, and Hsp70 delivered in DDA elicited significant level of antibody and $IFN-{\gamma}$ responses to corresponding antigens but no protective immunity comparable to that achieved with Mycobacterium bovis BCG. Conclusion : Recombinant proteins AK, NdK, and Hsp70 do not effectively control growth of M. tuberculosis in mice when immunized with DDA as an adjuvant.

• Journal of Life Science
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• v.15 no.4 s.71
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• pp.652-656
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• 2005

Tuberculosis is the leading infectious disease in the world. It is urgent to develop new vaccine and treating drugs. Besides vaccines, we want to know the effects of regular swim training on TB infection in the mouse model. This study was designed to examine the effects of regular swim training on lung and spleen TB counts and $INF-\gamma$ activity in the trained mice at different temperature. The trained mice underwent a 10-wk endurance swim training (5 times/wk) in water at $29\~33^{\circ}C$ (WWG) and $21\~23^{\circ}C$(CWG) for 60 min. And they were divided into 3 groups according to the regular swim training (CG; control, WWG; warm water group, and CWG; cold water group). Mice were challenged by aerosol infection with M. tuberculosis H37Rv using an inhalation device (Glas-Col, Terre Haute, Ind.) calibrated to deliver bacteria into lungs. Three weeks after immunization, the mice were challenged. Four weeks after challenge, the mice were sacrificed and the numbers of viable bacteria in lung and spleen were determined by plating serial dilution of whole organ homogenates on nutrient Middlebrook 7H11 agar (Difco, Detroit, MI). Colonies were counted after four weeks incubation at $37^{\circ}C$. All data were expressed as mean, standard deviation by using SPSS package program (win 10.0). The result through the statistical analysis of this data were summarized as follows; In the weight changes, there were significant differences among CG, WWG, and CWG following the swim training at different temperature, and CWG was the lowest. In the change of $INF-\gamma$ following the swim training, there were significant differences (p<.05) among CG, WWG, and CWG after stimulated with media and CFP. In MTB counts, there were significant differences (p<.05) between CG and WWG in the lung. And also there were significant differences (p<.05) among CG, WWG, and CWG. These results suggest that regular swim training suppress Th1 immune response caused by decreased $INF-\gamma$ level in the WWG, Also For the WWG, highly increased level of TB counts appear in the lung and spleen compare to CG.

• Advances in pediatric surgery
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• v.1 no.2
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• pp.200-203
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• 1995

Splenic tuberculosis is an uncommonly considered diagnosis in clinical practice. This is a case report of splenic tuberculosis in a 13-year-old boy who was seronegative to HIV. He was just well until 7 days prior to this admission when he started to feel epigastric and left subchondral pain. Chest X-ray was not pathological. Abdominal ultrasonography showed slight splenomegaly with multiple hypoechoic nodules and abdominal CT disclosed multiple irregular hypodense lesions in the spleen. Radiological interpretation suggested the possibility of lymphoma or metastatic malignancy. Splenectomy was done and the histopathological findings showed extensive chronic granulomatous inflammation compatible with tuberculosis. Splenic tuberculosis must be included in the differential diagnosis of hypoechoic and hypodense lesions by means of sonography and computed tomography, respectively.

• Advances in pediatric surgery
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• v.12 no.2
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• pp.244-250
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• 2006

Splenic abscess is a rare clinical condition with a reported incidence of 0.14 % to 0.70 % in various autopsy series. Primary tuberculosis of the spleen as a cause of splenic abscess is even rarer, especially in the antitubercular era. Infants and children have a higher predisposition to extra-pulmonary tuberculosis than adults and tend to develop severe extra-pulmonary disease such as miliary tuberculosis and meningitis. The diagnosis of tuberculosis in infants and children can be difficult because of nonspecific symptoms and clinical findings. Computed tomography establishes the diagnosis of splenic abscess and demonstrates the number and location of abscesses. Splenectomy is the standard of care in most clinical setting. We present a 4-year-old girl who had multiple tuberculosis splenic abscesses and was treated successfully with splenectomy.

• Tuberculosis and Respiratory Diseases
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• v.57 no.2
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• pp.125-131
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• 2004

Tuberculosis (TB) remains an enormous global health problem, and a new vaccine against TB more potent than the current inadequate BCG vaccine is urgently needed. We constructed three recombinant Mycobacterium bovis BCG (rBCG) strains over-expressing antigen (Ag) 85A, Ag85B, or both of M. tuberculosis using their own promoter and secretory sequence, or hsp60 promoter. SDS-PAGE analysis of rBCG proteins showed overexpression of Ag85A and Ag85B proteins in higher level than of those in their parental strain of BCG. In addition, rBCG(rBCG/B.FA) over-expressing Ag85A and Ag85B induced strong IFN-${\gamma}$ production in splenocytes. However, there was no significant difference in protective efficacy between rBCG and their parental BCG strain. In this study, therefore, rBCG over-expressing Ag85A, Ag85B, or both failed to show enhanced protection against M. tuberculosis infection in a mouse model.

• Tuberculosis and Respiratory Diseases
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• v.56 no.4
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• pp.393-404
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• 2004

Background : Nucleic acid hybridization has become an essential technique in the development of our understanding of gene structure and function. The quantitative analysis of hybridization has been used in the measurement of genome complexity and gene copy number. The filter hybridization assay is rapid, sensitive and can be used to measure RNAs complementary to any cloned DNA sequence. Methods : The authors assessed the accuracy, linearity, correlation coefficient and specificity of the hybridization depending on the added dose(0, 1, 5, and $10{\mu}g$) of non-specific rat spleen RNA to hybridization of surfactant protein A mRNA. Filter hybridization assays were used to obtain the equation of standard curve and thereby to quantitate the mRNA quantitation. Results : 1. Standard curve equation of filter hybridization assay between counts per minute (X) and spleen RNA input (Y) was Y=0.13X-19.35. Correlation coefficient was 0.98. 2. Standard curve equation of filter hybridization assay between counts per minute (X) and surfactant protein A mRNA transcript input (Y) was Y=0.00066X-0.046. Correlation coefficient was 0.99. 3. Standard curve equation of filter hybridization assay between counts per minute (X) and surfactant protein A mRNA transcript input (Y) after the addition of $1{\mu}g$ spleen RNA was Y=0.00056X-0.051. Correlation coefficient was 0.99. 4. Standard curve equation of filter hybridization assay between counts per minute (X) and surfactant protein A mRNA transcript input (Y) after the addition of $5{\mu}g$ spleen RNA was Y=0.00065X-0.088. Correlation coefficient was 0.99. 5. Standard curve equation of filter hybridization assay between counts per minute (X) and surfactant protein A mRNA transcript input (Y) after the addition of $10{\mu}g$ spleen RNA was Y=0.00051X-0.10. Correlation coefficient was 0.99. Conclusions : Comparison of cpm/filter in a linear range allowed accurate and reproducible estimation of surfactant protein A mRNA copy number irrespective of the addition dosage of non-specific rat spleen RNA over the range $0-10{\mu}g$.

• Tuberculosis and Respiratory Diseases
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• v.65 no.3
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• pp.177-182
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• 2008

Background: Isoniazid (INH, H) is a key drug of the standard first-line regimen for the treatment of tuberculosis (TB), yet some reports have suggested that treatment efficacy was maintained even though INH was omitted from the treatment regimen. Methods: One hundred forty C57BL/6 mice were infected with the H37Rv strain of M. tuberculosis with using a Glas-Col aerosol generation device, and this resulted in depositing about 100 bacilli in the lung. Four weeks after infection, anti-TB treatment was initiated with varying regimens for 4-8 weeks; Group 1: no treatment (control), Group 2 (4HREZ): 4 weeks of INH, rifampicin (R), pyrazinamide (Z) and ethambutol (E), Group 3: 1HREZ/3REZ, Group 4: 4REZ, Group 5: 4HREZ/4HRE, Group 6: 1HREZ/3REZ/4RE, and Group 7: 4REZ/4RE. The lungs and spleens were harvested at several time points until 28 weeks after infection, and the colony-forming unit (CFU) counts were determined. Results: The CFU counts increased steadily after infection in the control group. In the 4-week treatment groups (Group 2-4), even though the culture was negative at treatment completion, the bacilli grew again at the 12-week and 20-week time points after completion of treatment. In the 8-week treatment groups (Groups 5-7), the bacilli did not grow in the lung at 4 weeks after treatment initiation and thereafter. In the spleens of Group 7 in which INH was omitted from the treatment regimen, the culture was negative at 4-weeks after treatment initiation and thereafter. However, in Groups 5 and 6 in which INH was taken continuously or intermittently, the bacilli grew in the spleen at some time points after completion of treatment. Conclusion: TThe exclusion of INH from the standard first-line regimen did not affect the treatment outcome in a murine model of TB in the early stage of disease. Further studies using a murine model of chronic TB are necessary to clarify the role of INH in the standard first-line regimen for treating TB.