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Neutropenia is defined as an absolute neutrophil count (ANC) of <1,500/µL, and the severity of neutropenia generally can be graded as mild (1,000-1,500/µL), moderate (500-1,000/µL), or severe (<500/µL). This stratification aids in predicting the risk of pyogenic infection because the susceptibility to life-threatening infections is significantly increased in patients with prolonged episodes of severe neutropenia. Especially cancer-related neutropenia carry significant... |
Blood eosinophilia can be classified as either familial or acquired. Familial eosinophilia is a rare autosomal dominant disorder characterized by a stable eosinophil count. Acquired eosinophilia is classified further into a primary or secondary phenomenon depending on whether eosinophils are considered integral to the underlying disease. Primary eosinophilia is considered clonal in the presence of either a cytogenetic abnormality or... |
The immune system is comprised of cells and molecules whose collective and coordinated response to the introduction of foreign substance is referred to as the immune response. Defense against microbes is mediated by the early reaction (innate immunity) and the late response (adaptive immunity). Innate immunity consists of the epithelial barrier, phagocytes, complement and natural killer cells. Adaptive immunity, a... |
Purpose : To compare birth weight between infants with a single umbilical artery (SUA) and normal infants, investigate the associated anomalies of infants with SUA and isolated SUA (no abnormality of external appearance on birth, except SUA), and determine the prognosis of infants with isolated SUA. Methods : Live-born infants with SUA (n=59) detected by physical examination from among 15,193... |
Purpose : To determine the prevalence and clinical features of codetected respiratory etiological agents for acute respiratory infection in hospitalized children. Methods : Nasopharyngeal aspirates were obtained from hospitalized children with acute respiratory infection at Dankook University Hospital from September 2003 through June 2005. Immunofluorescent staining and culture were used for the detection of respiratory viruses (influenza virus [IFV] types... |
Purpose : Toll-like receptor 2 (TLR2) is critical in the immune response to mycobacterial infections. The purpose of this study was to analyze TLR2 surface expressions and TLR2-mediated tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) production in patients with BCG vaccine-associated suppurative lymphadenitis. Methods : Peripheral monocytes were separated from 16 patients with BCG vaccine-associated suppurative lymphadenitis and 10 healthy... |
Purpose : The authors aimed to analyze the long-term effects of treatments, especially external beam radiotherapy (EBRT), in bilateral retinoblastoma patients. Methods : This retrospective study analyzed the medical records of 22 bilateral retinoblastoma patients who were registered between October, 1987 and October, 1998 and followed-up for more than 10 years. They were treated by enucleation, EBRT, and systemic chemotherapy.... |
Purpose : Cysteinyl leukotrienes are important proinflammatory mediators in asthma. Recently, it was suggested that a promoter polymorphism in the genes encoding for leukotriene C4 synthase (LTC4S), a key enzyme in the leukotriene synthetic pathway, and cysteinyl leukotriene receptor 1 (CysLTR1) might be associated with aspirin-intolerant asthma. We investigated whether polymorphisms in LTC4S and CysLTR1 genes or their interactions were... |
Purpose : To examine the effect of bosentan, a dual endothelin receptor (ER) antagonist, on the development of monocrotaline (MCT)-induced pulmonary hypertension in rats by especially focusing on the pulmonary vascular morphology changes. Methods : Sprague-Dawley rats were treated as follows: controls received a subcutaneous saline injection, MCT-treated rats received a subcutaneous MCT injection, and bosentan-treated rats received a MCT... |
Purpose : We screened more than 350 compounds with an endoperoxide ring structure in search of an anti-leukemic drug and found that compound 127 (c-127) could induce significant cytotoxicity in HL-60 cells. In this study, we investigated the molecular mechanisms of compound 127-induced antitumor activity on HL-60 cells. Methods : HL-60 cells were cultured in Rosewell Park Memorial Institute 1640... |
SmithMagenis syndrome (SMS) is a rare disorder with multiple congenital anomalies caused by a heterozygous interstitial deletion involving chromosome 17p11.2, where the retinoic acid-induced 1 (RAI1) gene is located, or by a mutation of RAI1. Approximately 90% of the patients with SMS have a detectable 17p11.2 microdeletion on fluorescence in-situ hybridization (FISH). SMS is characterized by mental retardation, distinctive behavioral... |
Herpes zoster is caused by the varicella-zoster virus (VZV), which affects nerve ganglions. VZV infection may be associated with neurologic complications, which are usually observed after vesicular exanthem. Acute aseptic meningitis is a rare complication of VZV reactivation. We report the case of a previously healthy 14-year-old boy who suffered from aseptic meningitis that was attributed to reactivated VZV infection... |
We describe the case of a 4-month-old male infant diagnosed with early congenital syphilis during evaluation of a left distal humerus fracture. This report emphasizes the importance of screening for syphilis among pregnant women and newborns, and is a reminder of the continued existence of congenital syphilis. |
Facial palsy as the presenting symptom of leukemia is very rare, especially in acute myeloid leukemia. A review of the medical literature identified reports on 8 children with AML who had facial paralysis as the presenting sign. Whole brain irradiation (WBI) has been applied in most cases. We present the cases of 3 such children. Achieving a remission without WBI,... |
Paradoxical response refers to the enlargement of old lesions or unexpected appearance of new lesions after initial improvement following treatment with antitubercular agents. Various types of paradoxical responses have been reported in the world, but they are rarely reported in Korean children. We report the case of a 17-year-old boy who was diagnosed with tuberculous pleurisy and was treated appropriately.... |
Meningococcal infections can be associated with abnormalities of the complement system, which contains 5 terminal complement proteins. Furthermore, deficiencies in 1 of these 5, complement component 7 (C7), leads to the loss of complement lytic function, and affected patients show increased susceptibility to recurrent meningococcal meningitis and systemic Neisseria gonorrhoeae infection. In September 2003, an 11-year-old female patient presented at... |
Epstein-Barr virus-associated hemophagocytic lymphohistiocytosis (EBV-HLH) with central nervous system (CNS) involvement is usually fatal unless stem cell transplant (SCT) is offered. However, SCT with conventional intensity conditioning is associated with high transplant-related mortality. We describe our experience with unrelated SCTs after reduced-intensity conditioning (RIC) for patients with EBV-HLH with progressive CNS disease. This approach was associated with minimal toxicities and... |