1.Immunological aspects in patients with chronic active hepatitis--cellular immune responses.
Byungchae PARK ; Jayoung KOO ; Jan DE GROOTE
Journal of Korean Medical Science 1986;1(1):15-23
We studied host immune parameters which might be related to the activity and the pathogenetic mechanism of chronic active hepatitis. The subjects consisted of 45 cases with hepatitis B virus surface antigen (HBsAg)-positive chronic active hepatitis (CAH), 44 HBsAg-negative CAH, 22 with inactive chronic hepatitis, and 45 cases of normal persons, hepatitis B virus (HBV) carriers, or the patients with acute myocardial infarction. The in vitro assay for the in vivo activated lymphocytes was performed by measuring spontaneous thymidine uptake (SLT) of lymphocytes isolated from peripheral blood. SLT was significantly (p less than 0.001) elevated in cases with HBsAg-positive (1227 +/- 806 cpm) and-negative CAH (1017 +/- 559 cpm) compared to the patients with inactive chronic hepatitis (347 +/- 79 cpm) and to the control group (320 +/- 106 cpm). SLT values observed in 7 cases with active disease (group I and II), in which remission and relapsing phase could be assessable, were elevated from 648 +/- 121 cpm in remission phase to 1548 +/- 606 cpm one to two weeks before the appearance of biochemical evidence (SGPT) of relapse. This pattern of SLT elevation, however, was not observed in patients with inactive hepatitis. Neither the abnormal distribution of T-celi subsets nor the presence of conventional HBV markers were related to the elevated SLT value. Our findings may therefore indicate that SLT might be useful in assessment of the disease activity in patients with CAH.
Adult
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Alanine Transaminase/blood
;
Female
;
Hepatitis, Chronic/*immunology
;
Humans
;
Lymphocyte Activation
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Lymphocyte Culture Test, Mixed
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Male
;
Middle Aged
;
T-Lymphocyte Subsets/immunology
2.Eosinophils Regulate Type 2 Immune Responses Following Infection with the Nematode Trichinella spiralis.
Journal of Bacteriology and Virology 2016;46(4):295-302
Eosinophils are multifunctional leukocytes implicated in protection against helminth infections. Although eosinophils comprise between 1~5% of peripheral blood leukocytes, they primarily reside in the gastrointestinal tract under homeostatic conditions, and rapidly proliferate upon parasitic infection. Intestinal infection with Trichinella spiralis (T. spiralis) induces eosinophilia when the parasite enters the larval stages and larvae finally migrate to the skeletal muscle. Eosinophils are known to mediate parasite death through antibody-dependent cellular cytotoxicity. In this study, we aimed to address the functional significance of eosinophils in the intestinal phase of T. spiralis infection by analysis of immune responses in the Peyer's patch (PP) of infected BALB/c and eosinophil-ablated ΔdblGATA mice. Trafficking of eosinophils to the PP was significantly increased, with upregulation of interleukin-5 at 14 days post infection. Eosinophil deficiency led to a significant augmentation of serum immunoglobulin (Ig) M and IgG1 antibody levels. In accordance with this, IgG1+ B cells in the PP were substantially increased in ΔdblGATA mice compared to that in BALB/c mice. Transforming growth factor-β expression in the PP of infected ΔdblGATA mice was significantly decreased compared to that in BALB/c mice, whereas the number of T. spiralis larvae in the diaphragm was increased. Taken together, these findings indicate that eosinophils contribute to the regulation of Th2 immune responses, and protect the host from T. spiralis attempting to establish larvae in the skeletal muscle.
Animals
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B-Lymphocytes
;
Diaphragm
;
Eosinophilia
;
Eosinophils*
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Gastrointestinal Tract
;
Helminths
;
Immunoglobulin G
;
Immunoglobulins
;
Interleukin-5
;
Larva
;
Leukocytes
;
Mice
;
Muscle, Skeletal
;
Parasites
;
Trichinella spiralis*
;
Trichinella*
;
Up-Regulation
3.Glossopharyngeal Neuralgia and Somatic Tinnitus Caused by a Small Tonsillolith
Han Kyu CHO ; Jayoung OH ; Ja-Won KOO
Korean Journal of Otolaryngology - Head and Neck Surgery 2022;65(1):62-65
A 66 years old male presented with severe right-sided otalgia and throat pain, which persisted more than a year. He also complained of bilateral tinnitus. Tinnitus was continuous and high-pitched. Severe pain usually followed swallowing food. Pressing his right tonsil aggravated such symptoms. Pure tone audiogram showed both high frequencies hearing loss. Neck CT image revealed a small tonsillolith in his right tonsil. Gabapentin and non-steroidal anti-inflammatory drugs reduced the intensity of pain, but could not eradicate the pain. Finally, we performed radiofrequency tonsil ablation to eliminate right side tonsillolith. After ablation, pain immediately subsided and his tinnitus also disappeared. Tiny impacted tonsillolith may induce glossopharyngeal neuralgia and somatic tinnitus.
4.Histopathological Findings of Intracranial Thrombi in Nonbacterial Thrombotic Endocarditis.
Kyoungsub KIM ; Jayoung KIM ; Seong Hwan AHN ; Woo Seok HA ; Yu Jin KOO ; Dong Joon KIM ; Hyo Suk NAM ; Ji Hoe HEO
Journal of Stroke 2017;19(3):367-369
No abstract available.
Endocarditis*
5.Identification and Antifungal Susceptibility Profiles of Cyberlindnera fabianii in Korea
Ji Hyun PARK ; Junsang OH ; Hyunkyu SANG ; Bhushan SHRESTHA ; Hyeyoung LEE ; Jehyun KOO ; Sung Il CHO ; Ji Seon CHOI ; Min Ha LEE ; Jayoung KIM ; Gi Ho SUNG
Mycobiology 2019;47(4):449-456
Invasive fungal infections caused by Cyberlindnera fabianii have recently increased. However, biochemical kits such as API 20 C AUX and Vitek-2C have misidentified this species as other Candida spp. such as C. pelliculosa or C. utilis due to no information of Cy. fabianii in yeast database. During our 2016–2017 surveys, eleven isolates of Cy. fabianii were obtained in International St. Mary's Hospital in Korea. Here, we describe its morphological and molecular characteristics and tested its antifungal susceptibility against nine antifungal agents. The sequences of the ITS region and the D1/D2 region of LSU revealed 100% identity with the sequences of Cy. fabianii. In comparison with the results from MALDI-TOF mass spectrometry, we found that Cy. fabianii can be distinguished from other species. In antifungal susceptibility test, voriconazole and echinocandins exhibited good antifungal activities against the majority of Cy. fabianii isolates despite the absence of standard criteria.